Reservoir report

Ohio reservoirs & dams

Every documented dam and reservoir in Ohio — with normal storage capacity, dam height, max discharge, hazard classification, and drainage area. Sourced from USACE NID and state water-resource agencies.

Dams in Ohio

1,391

Total storage

2,116,856ac·ft

High-hazard dams

419

Updated

May 18

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May

2026

Reservoir report

Ohio has several major reservoirs, including Buckeye Lake, Grand Lake St. Marys, and Caesar Creek Lake. These reservoirs are fed by various streams, rivers, and creeks, such as the Licking River, the St. Marys River, and Caesar Creek. Ohio does not have any significant snowpack or mountains that affect its reservoirs.

The hydrology of Ohio is primarily influenced by the state's geography, which is characterized by rolling hills and flat plains. Records show that Ohio has experienced major floods in the past, including the Great Dayton Flood of 1913, which resulted in significant damage and loss of life.

Drought conditions in Ohio have been relatively rare, but the state has experienced occasional droughts over the years. Seasonal trends show that spring and summer are typically the wettest seasons in Ohio, while fall and winter are drier. Overall, Ohio's reservoirs and dams play a crucial role in providing water for the state's residents and industries.

Ohio at a glance

Storage, hazard, and history

How the Ohio dam inventory breaks down -- aggregate stats computed across every documented dam in the state.

Hazard classification

High419
Significant554
Low418

USACE downstream-consequence rating, not failure likelihood.

Notable dams

Tallest No. 2 Slurry Pond 300 ft
Oldest Lower Shaker Lake Dam 1830
Total storage All Ohio dams 2,116,856 ac·ft

Built by decade

Most U.S. dams were built mid-20th century during the federal water-development era.

Full inventory

Ohio dams & reservoirs

Every documented dam in Ohio. Sortable by any column; quickly filterable by name. Numeric columns heat-mapped from light to deep based on value. Tap any dam for the full report.

Name	Year built	Normal storage	Dam height	Max discharge	Hazard	Drainage area
Pleasant Hill Dam	1937	13,500	0	19,000	High	197
Pleasant Hill Dam - Auxiliary Spillway Fuse Plug Dike	2001	·	5	55,000	High	·
Wills Creek Dam	1936	6,000	0	45,800	High	842
Dover Dam	1938	0	0	123,000	High	1,405
Dover Dam - Corundite Levee	1937	0	15	·	Low	·
Dover Dam - Fairfield Levee	1937	0	30	·	Low	·
Dover Dam - Somerdale Levee	1937	0	35	·	High	·
Dover Dam - U.S. Brick Levee	1937	0	20	·	Low	·
Dover Dam - Zoar Levee	1951	0	48	·	High	·
Dover Dam - Zoar Diversion Dam	1937	·	34	225	High	·
Bolivar Dam	1938	0	0	61,700	High	504
Bolivar Dam - East Sparta Levee	1938	0	25	·	Low	·
Bolivar Dam - Magnolia Levee	1951	0	31	·	High	·
Beach City Dam	1936	1,700	0	28,000	High	300
Beach City Dam - Brewster Levee	1976	0	24	·	High	·
Beach City Dam - Silica Sand Levee	1937	0	21	·	Low	·
Atwood Dam	1936	23,600	0	12,800	High	70
Dillon Dam	1960	17,500	0	89,700	High	742
Dillon Dam - Nashport Dike	1959	0	48	·	High	·
Dillon Dam - Pleasant Valley Dike	1959	0	38	·	High	·
Deer Creek Dam	1968	21,030	0	117,000	High	277
Deer Creek Dam - New Holland Dike	1968	0	15	·	High	·
North Branch Kokosing Dam	1972	1,043	0	13,500	High	45
Tappan Dam	1936	35,100	0	23,700	High	71
Piedmont Dam	1937	34,500	0	15,200	High	86
Clendening Dam	1936	26,500	0	13,200	High	69
Senecaville Dam	1937	43,500	0	11,400	High	118
Leesville Dam	1937	19,500	0	19,700	High	48
Delaware Dam	1951	14,000	0	96,000	High	386
Delaware Dam - Waldo Levee	1948	0	30	·	High	·
Mohawk Dam	1937	0	0	151,000	High	1,504
Paint Creek Dam	1973	20,310	0	204,000	High	576
Paint Creek Dam - Greenfield Levee	1973	0	43	·	Significant	·
Paint Creek Dam - Dike	1973	16,614	·	·	High	·
Tom Jenkins Dam	1950	9,300	0	21,300	High	33
Mohicanville Dam	1937	0	0	20,500	High	271
Mohicanville Dam - Dike 1	1984	0	11	·	High	·
Mohicanville Dam - Dike 2	1984	0	25	·	High	·
Charles Mill Dam	1936	7,400	0	23,500	High	215
Charles Mill Dam - Pavonia Levee	1936	0	23	·	Low	·
Charles Mill Dam - Dike 1	1936	2,400	·	·	High	·
Charles Mill Dam - Dike 2	1936	0	·	·	High	·
Sun Valley Lake Dam	1955	81	20	84	Low	0
Caldwell Lake Dam	1937	58	36	3,741	High	1
Stewart Lake Dam	1939	44	33	4,190	High	0
White Turkey Lake Dam	1968	116	42	2,503	High	0
Pine Lake Dam	1938	109	34	3,367	Significant	2
Christian Union Church Lake Dam	1968	36	23	832	Significant	0
Clarence J. Brown Dam	1973	36,900	0	50,000	High	82
West Fork Of Mill Creek Dam	1952	1,530	0	19,500	High	29
Michael J. Kirwan Dam	1966	56,700	0	38,500	High	81
Mosquito Creek Dam	1944	82,400	0	4,180	High	97
Berlin Dam	1943	58,400	0	73,400	High	249
Broken Aro Slurry Pond No. 1 Dam	1962	116	49	68	Significant	0
Sunset Lake Dam	1947	51	27	2,706	High	0
Lake Wapusun Dam	1969	213	34	699	Significant	0
Boreman Lake Dam	1971	79	19	2,500	Low	0
Lake Sylvan Dam	1947	238	21	1,152	Significant	1
Leatherwood Lake Dam	1972	184	12	384	Significant	0
Cambridge City Reservoir Dam	1916	446	47	2,300	Significant	1
Eldon Reservoir Dam	1933	53	38	200	Low	0
Ritz Lake Dam	1973	22	30	629	Low	0
Tennessee Gas Station 209 Lake Dam	1951	37	18	207	Significant	0
Hidden Haven Lake Dam	1961	119	44	1,746	Significant	0
Indian Lakes Rec. Area Upper Lake Dam	1962	29	19	1,759	Significant	0
Indian Lakes Rec. Area Lower Lake Dam	1962	40	19	3,140	High	1
Luburgh Lake Dam	1963	1,003	51	5,500	High	1
Mcmillan Lake Dam	1963	25	27	213	Low	0
Deer Lake Dam	1957	72	30	527	High	1
International Animal Preserve Pond Dam #2	1959	180	50	1,428	Significant	1
Knowlton's Pond Dam	1950	49	24	341	Low	1
Blue Rock Lake Dam	1937	163	31	6,618	High	2
New Concord Village Reservoir Dam	1955	153	42	324	Significant	0
Lake Buckhorn Dam	1967	4,234	65	25,769	High	4
Hickory Lake Dam	1967	96	39	802	Low	0
Bethany Lake Dam	1962	91	29	7,900	High	1
Hidden Valley Acres Dam	1958	72	30	66	Significant	1
Silver Creek Dam	1968	299	44	3,170	Significant	2
Lake Choctaw Dam	1964	2,388	42	51,562	High	25
Edwin Naus Lake Dam	1968	43	21	·	Low	0
Upper Sandusky Reservoir Dam	1957	455	31	1,650	Significant	1
Sproat Lake Dam	1962	48	37	942	Significant	1
Lake Hope Dam	1939	1,040	34	21,747	Significant	10
Lake Rupert Dam	1968	2,245	40	41,465	High	22
Lake Alma Dam	1902	340	16	137	High	1
Lake Hill Dam	1954	20	31	3,072	High	1
Rustic Acres Lake Dam	1974	10	26	160	Significant	0
Stroman Lake Dam	1958	325	38	2,238	High	0
Nesbitt Pond Dam	1953	32	29	3,420	High	0
Margaret Creek Structure No. 2	1970	2,131	60	57,619	High	4
Margaret Creek Structure No. 4	1971	90	34	9,234	High	4
Margaret Creek Structure No. 5	1970	29	29	9,573	Significant	2
Dow Lake Dam	1959	2,126	66	1,517	High	7
Strahler's Lake Dam	1966	13	29	325	Low	0
Chopper's Lake Dam	1948	83	23	70	Significant	1
Wagner Pond Dam	1955	24	28	·	Low	0
Goodfellows Park Lake Dam	1950	244	40	·	Low	1
Badger Pond Dam	1958	86	33	1,000	Low	0
Sellers Lake Dam	1963	67	35	688	Low	0
Jacobs Lake Dam	1962	59	25	10	Significant	0
Cinnamon Lake Dam	1970	1,480	45	9,878	High	3
Rhoads Lake Dam (Upper)	1956	45	18	1,258	Significant	0
Nova Pond Dam	1930	108	15	69	Significant	1
Stell Lake Dam	1969	61	26	686	Low	0
Uke Ranch Lake Dam	1968	37	29	798	Low	0
Mathews Pond Dam	1969	38	58	62	Significant	0
Eastern Ag Research Station Dam	1965	16	32	647	Low	0
Rustic Lake Dam	1964	35	21	199	Low	0
Loretta Lake Dam	1968	38	20	488	Low	0
Firelands Lake No. 1 Dam	1966	73	14	110	Low	0
Clare-Mar Camp Lake Dam	1968	258	19	724	Significant	1
Taylor Lake Dam	1968	48	20	378	Low	0
Ukrainian American Youth Lake Dam	1965	59	29	3	Low	0
Eppley Pond Dam	1955	23	28	·	Low	0
Pheasant Run Lake Dam	·	43	11	677	Significant	1
Oberlin Upground Reservoir	1960	880	20	·	High	0
Oberlin Old Upground Reservoir	1960	54	17	·	Low	0
Rod Lake Dam	1949	86	41	92	Significant	1
Bowers Lake Estate Dam	1960	22	15	280	Significant	2
Jefferson Sportsman's Lake No. 1 Dam	1966	266	39	1,085	Low	1
Pine Valley Sportsmen's Lake No. 4 Dam	1964	100	22	96	High	1
Pine Valley Sportsmen's Lake No. 1 Dam	1964	39	37	225	Significant	0
Friendship Park Lake Dam	1972	2,238	94	10,530	High	3
Malabu Lake Dam	1961	33	29	692	Low	0
Naco Lake Dam	1958	56	40	224	Significant	0
Dorothy Mine Pond Dam	1950	14	48	8,500	Significant	1
Georgetown Plant Freshwater Dam	1949	2,100	73	5,180	High	4
Seleski Lake No. 2 Dam	1963	85	39	840	Significant	1
Georgetown Plant Lower Supply Pond Dam	1951	77	45	·	Significant	2
Georgetown Plant Upper Supply Pond Dam	1948	67	10	60	Significant	0
Sparrow Reservoir Dam	1949	250	33	3,600	Low	1
Cadiz Country Club Pond Dam	1968	54	45	48	Significant	0
Foster's Lake Dam	1960	71	26	714	Low	0
Sally Buffalo Park Lake Dam	1953	133	37	83	High	0
Scio Pottery Lake Dam	·	13	31	203	Low	0
Lake Forest Dam	1958	186	37	1,738	Significant	1
Waller Lake Dam	1955	26	24	400	High	1
Payne Lake Dam	1961	52	34	·	Low	·
Lawco Lake Dam	1931	45	17	904	Low	2
Barhorst Lake Dam	1970	114	33	350	Low	0
Powers Upground Reservoir	1954	500	28	10	High	0
Bucyrus Reservoir No. 1 Dam	1900	220	18	5,497	High	3
Bucyrus Reservoir No. 3 Dam	1955	572	32	16	High	0
Paradise Lakes - North Lake Dam	1946	66	32	210	High	0
Paradise Lakes - South Lake Dam	1946	72	40	21	High	0
Lake Lakengren Dam	1970	3,103	74	33,204	High	8
Thor Lake Dam	1970	97	39	1,386	Low	0
Lake Valhalla Dam	1970	20	26	2,117	Low	0
Four Eagles Lake Dam	1959	255	45	13,400	High	3
Cross Pond Dam	1970	28	31	90	Significant	0
Georgetown Upground Reservoir	1959	0	27	7	Significant	0
Lake Waynoka Dam	1973	3,543	53	26,005	High	6
Lake Waynoka Retention Dam	1973	89	32	4,125	Significant	1
Lake Waynoka Upground Reservoir	1973	123	23	5	Significant	0
Lake Grant Dam	1948	1,250	32	13,369	Significant	26
Noe Lake Dam	1971	32	27	891	Low	0
Dieckbrader Lake Dam	1941	104	23	2,167	Significant	2
Lake Lorelei Dam	1968	1,679	42	10,893	Significant	5
Possum Hollow Farm Dam	1973	103	33	757	Low	0
Evans Lake Dam	1972	47	30	·	Low	0
Lakota Lake Dam	1960	122	58	54	Significant	0
Ross Trails Lake Dam	1960	99	48	318	High	0
Trenton Sportsmen Club Lake Dam	1959	40	33	·	Low	0
Charylie's Lake Dam	1963	21	29	189	High	0
Middletown Sportsman Club Lake Dam	1963	49	41	320	Significant	0
Will-O-Bob Lake Dam	1968	17	29	109	Low	0
Elk Creek Meadow Ridge Pond #1 Dam	1970	31	26	1,118	Significant	0
Greenbriar Lake Dam	1958	302	38	693	Low	1
Miami View Golf Club Pond No. 1 Dam	1962	33	38	413	Significant	0
Miami View Golf Club Pond No. 2 Dam	·	41	43	355	Significant	0
Heimann Pond Dam	1964	41	35	147	Significant	0
Coldstream Country Club Dam No. 1	1971	14	33	499	Low	0
Apple Hill Farm Lake Dam	1965	20	30	·	Low	0
Kreis Dam	1936	420	37	3,104	High	5
Miami-Whitewater Forest Lake Dam	1967	614	35	5,524	Significant	3
Paulmeadows Lake Dam	1965	32	32	80	Low	0
Cave Lake Dam	1962	260	29	6,757	High	8
Long's Retreat Lake Dam	1970	55	28	7,510	High	8
Hay Hollow Reservoir Dam	1952	93	34	1,920	Low	1
Pike Lake Dam	1937	85	31	912	High	3
Porter Lake Dam	1968	54	30	193	Significant	0
Royal Oak Lake Dam	1964	82	34	132	Significant	0
Lambert Pond	1973	16	27	·	Low	0
Upper Hickory Hills Lake Dam	1957	33	25	·	Low	0
Lower Hickory Hills Lake Dam	1968	90	28	·	Low	1
Lake Shawnee Dam	1963	1,402	45	23,024	High	11
Spring Lake Dam	1969	43	29	177	Low	0
Greene Co. Fish & Game Pond No. 1 Dam	1954	80	28	1,101	Low	0
Tubaugh Lake Dam	1965	33	26	704	Low	1
Lamping Dam	1967	30	27	100	Significant	0
Lower Woodsfield Reservoir Dam	1901	90	47	518	Significant	1
Upper Woodsfield Reservoir Dam	·	28	31	679	Significant	1
Beallsville Sportsman Club Lake Dam	1958	17	25	·	Low	·
Malaga Lake Dam	1972	92	31	586	Low	0
Indian Trail Campground Lake Dam	1969	39	26	125	Low	1
Greenwich Reservoir Dam	1921	46	20	1,106	High	1
Willard Lake Dam	1955	56	22	1,430	Low	1
Camp Conger Lake Dam	1963	9	19	218	Significant	0
Hartman Dam	1972	41	19	394	Low	0
Holiday Lake Dam	1965	2,850	40	33,271	High	14
Big Bass Lake Dam	1965	76	31	721	Low	0
Realty Investment Property Dam	1968	84	16	8	Low	0
Squaw Valley Lake Dam	1964	45	18	55	Low	0
Cooper Pond Dam	1971	67	24	66	Low	0
Lake Kayla Dam	1968	18	31	54	Low	0
Stout Lake Dam	1940	98	16	43	Low	0
Huber Lake Dam	1966	152	23	150	Significant	0
Crystal Lake Dam	1955	22	10	283	Significant	0
Varian Lake Dam	1964	32	32	713	Significant	0
Timken Lake Dam	1962	67	17	995	Low	4
Lake Cable Dam	1926	1,100	25	313	High	3
Clay's Park Lake Dam	1955	69	15	1,962	Low	12
Morelli Pond Dam	·	67	19	171	Significant	7
North Lawrence Lake Dam	·	26	12	·	Low	1
Dale Walborn Reservoir Dam	1971	5,366	37	26,000	High	32
Willowdale Lake Dam	1924	367	27	1,150	Significant	6
Lake Lucern Dam	1927	72	10	694	Significant	29
Rogers Lake Dam	·	28	13	176	Low	1
Camp Otterbein Lake Dam	1965	31	35	451	Low	0
Hidden Lake Dam	1957	21	28	605	Significant	0
Old Man's Cave Lake Dam	1972	391	64	936	High	0
Lake Rice Dam	1967	37	32	1,026	Significant	0
Lake Of The Four Seasons Dam	1966	1,317	49	1,931	High	3
Lake Tomahawk Dam	1962	15	36	1,409	Low	0
Cave Hill Lake Dam	1969	42	28	76	Low	0
Mineral Springs Resort Lake Dam	1973	1,539	67	10,330	High	2
Laycock Farm Pond No. 1 Dam	1945	72	41	65	Significant	0
Winchester Lake Dam	1953	96	28	2,689	Low	1
Bar-E Club Lake Dam	1955	156	32	49	Low	0
Adams Lake Dam	1947	245	35	18,571	High	5
Lake Logan Dam	1954	3,000	43	24,510	High	15
Catman Blues Fishing Lake Llc	1961	40	27	70	Low	0
Owensville Lake Dam	1951	39	24	73	Significant	0
Hamilton County Anglers Lake Dam	1950	72	34	871	Significant	0
Powell Crosly Lake Dam	1967	42	43	60	Significant	0
Glen Ridge Lake Dam	1950	142	42	1,353	Significant	1
Royal Oak Golf Course Pond No. 1 Dam	1964	37	27	28	Significant	0
Royal Oak Golf Course Pond No. 2 Dam	1966	94	39	26	Significant	0
Stonelick Lake Dam	1949	1,073	35	33,402	High	23
Clermont Golf Limited Lake Dam	1997	180	37	3,470	High	0
Wiemeyer Pond Dam	1969	18	32	·	Low	0
Halley Pond Dam	1959	49	32	4	Significant	0
Comstock Pond Dam	1962	35	22	589	Low	0
Camp Francis Asbury Lake Dam	1962	33	32	506	Low	0
Kenton Dam	1967	98	26	·	Low	0
Tycoon Lake Dam	1961	2,447	29	111	High	2
Rio Grande Reservoir	1959	112	30	562	High	0
Roosevelt Lake Dam	1934	77	26	4,700	High	16
Scioto Hills Baptist Camp Lake Dam	1950	22	33	184	Low	0
Lake Margaret Dam	1953	67	35	6,200	Significant	2
Elks Country Club Lake Dam	1966	16	28	848	Significant	0
Big Bear Lake Dam	1972	382	37	18,662	High	12
Belmont Lake Dam	1961	1,904	67	5,620	High	5
Bethesda Reservoir Dam	1959	98	30	328	Significant	0
Switzerland Lake Dam	1956	469	54	1,117	Significant	0
Myers Pond Dam	1966	30	28	844	Low	0
Bethesda Sportsmans Club Pond Dam	1958	37	22	140	Low	1
Barnesville Reservoir No. 1 Dam	1904	241	42	2,032	High	1
Barnesville Reservoir No. 2 Dam	1936	179	48	425	High	1
Woodland Lake Leisure Resort Dam	1971	45	26	205	Significant	0
Rocky Fork Lake Dam	1952	35,299	74	42,489	High	114
Hickory Hills Lake Dam	1971	727	44	7,310	Significant	4
Hillsboro Reservoir No. 1 Dam	1945	275	42	1,871	Significant	1
Cedar Hill Campground Lake Dam	1970	44	30	2,400	Significant	1
Fallsville Wildlife Area Dam	1963	60	28	489	Low	0
Wellsville Reservoir Dam	1926	270	62	8,397	High	17
Lake Cha-Vel Dam	1950	101	35	126	Significant	0
Rayls Lake Dam	1955	51	22	394	Significant	0
Bibbee's Little Rock Lake Dam	1960	119	27	487	High	1
Sunshine Lakes Dam	·	154	38	50	Significant	1
Ismond Pond Dam	1957	60	27	146	Low	0
Manfull Lake Dam	1951	66	18	99	Significant	0
Summitville Lake Dam	1940	108	26	309	Significant	1
Lake Tomahawk Dam	1966	1,604	62	7,500	High	2
Werner Lake Dam	1955	34	19	41	Significant	0
Lake Copeland Dam	1956	130	28	1,229	Significant	3
Dickey Lake Dam	1945	35	14	391	Low	0
Mill Pond Lake Dam	1952	53	22	34	Significant	0
Salem Reservoir (South Embankment)	1952	1,594	48	·	High	1
Spring Valley Park Lake Dam	1993	148	29	9,043	High	3
Big Rock Lake Dam	1963	99	32	1,179	Low	0
Lake P'Na Dam	1948	99	17	39	Significant	0
Paradise Lake Dam	1962	160	30	1,472	Significant	1
Slates Lake Dam	1967	64	28	8	Significant	0
Hammond Lake Ii Dam	1951	45	17	65	Low	1
Woodland Lake Dam	1948	51	19	795	Significant	1
Flying Finn Lake Dam	1966	71	29	609	Significant	1
Beaver Lake Dam	1917	416	18	2,345	Significant	3
Westville Lake Dam	1912	609	29	3,296	Significant	9
Coalburg Lake Dam	1916	350	24	7,165	High	15
Kirila Pond Dam	1950	120	46	21	Significant	0
Pleasant Valley Lake Dam	1925	73	20	1,005	High	4
Mineral Ridge Dam	1932	36,342	60	69,873	High	84
Newton Falls Low Head Dam	1908	844	17	49,102	Significant	306
Yount Pond Dam	1965	49	25	232	Significant	0
Pintail Pond Dam	1968	56	8	24	Low	0
Coppedge Lake Dam	1968	17	30	221	Low	0
Apple Valley Lake Dam	1971	11,900	91	54,460	High	19
Lake Viering Dam	1964	390	47	254	High	0
Ashley Lake Dam	1971	86	25	3,800	Significant	1
Girl Scouts Lake Dam	1968	29	21	430	Low	0
Cloverdale Lake Dam	·	94	13	56	Significant	0
Hayes Lake Dam	1968	60	45	450	Significant	0
Lower Shaker Lake Dam	1830	132	17	425	High	5
Upper Shaker Lake Dam	1852	76	30	341	High	2
Shangri-La Ski Club Lake Dam	1956	168	25	2,227	Significant	11
Bear Town Lake Dam	1960	57	22	1,721	Low	1
Lake Lucerne Dam	1922	91	30	1,818	High	5
Tanglewood Lake Dam	1971	110	37	26,100	High	4
Bellwood Lake Dam	1960	19	27	23	Significant	0
Lake Louise Dam	·	39	25	908	Significant	0
Frohring Lake Dam	1957	50	18	384	Low	2
Mont-Mere Lake Dam	1969	294	28	6,095	High	7
Kittredge Arboretum Lake Dam	1965	33	26	839	Significant	1
Lake Greenbriar Dam	1971	22	30	580	Low	0
Welch Pond Dam	1970	31	27	·	Low	0
Pine Lake No. 1 Dam	1968	24	36	2,465	Significant	0
The Farm Lake Dam	1951	40	35	194	Low	0
Marsh Lake Dam	1955	36	43	641	Significant	0
Rutledge Lake Dam	1951	65	32	569	Significant	0
Eagles Lake Dam	1966	129	16	144	Low	0
Lake La Su An Dam	1959	555	19	317	Significant	1
Lake Seneca Dam	1966	1,554	36	92,355	High	107
Lake `A' Dam	1966	58	31	455	Low	0
Lake `C' Dam	1971	123	36	192	Low	0
Auglaize Hydro	1913	850	23	6,981	Low	2,318
Hickory Lake Dam	1964	132	26	5,780	Significant	4
Independence Dam	1924	3,270	12	122,064	Significant	5,545
Camp Lakota Boy Scout Lake Dam	1969	132	15	367	Low	0
Lockington Dam	1922	0	78	25,000	High	255
Lower Jeffco Lake Dam	1963	84	17	170	High	0
Limpert Lower Lake Dam	1963	45	20	84	Low	1
Galicki Lake Dam	1973	40	22	195	Low	0
Lake Cardinal Dam	1927	370	31	8,284	Significant	8
Camp Whitewood Lake Dam	1967	34	20	1,276	High	0
Roaming Rock Shores Lake Dam	1967	6,091	45	55,678	High	74
O'Brien Lake Dam	1968	104	24	190	Low	3
Lenox Lakes Dam	1969	58	28	1,573	Low	2
Private Lake Dam	1964	38	19	231	Low	0
Lake Beaumont Dam	1965	60	27	·	Low	1
Lake George Dam	1964	146	17	544	Significant	3
Lindon Lake Dam	1961	88	27	1,276	Low	1
Lake Asegra Dam	1944	374	29	1,793	Significant	4
Pierce-Ruhland Pond Dam	1969	51	34	179	Significant	0
Ashtabula County Outdoor Club Lake Dam	1928	64	22	308	High	2
Mike Lake Dam	1958	28	11	1,977	Significant	5
Arrowhead Lake Dam No. 1	1952	252	30	808	Significant	1
King's Lake Dam	1957	65	14	496	Low	0
Newport Lake Dam	1928	507	28	9,119	Significant	68
Lake Glacier Dam	1905	235	24	7,290	Low	80
Lake Cohasset Dam	1897	175	25	6,987	Significant	74
Lower Diehl Lake Dam	1930	31	27	3,800	Low	7
Lake Milton Dam	1916	21,600	53	68,000	High	276
Delta Reservoir No. 1	1933	422	22	100	High	0
Harrison Lake Dam	1941	675	35	12,500	Significant	38
Hutchings Station Dam	1948	255	9	187,000	Low	2,714
Lake Marinole Dam	1966	23	29	842	High	0
Germantown Dam	1922	0	107	22,294	High	275
Huffman Dam	1922	0	73	204,186	High	671
Taylorsville Dam	1922	0	78	112,381	High	1,133
Englewood Dam	1922	0	121	41,250	High	651
Salt Fork Lake Dam	1968	41,100	61	28,903	High	160
Rush Run Lake Dam	1970	924	53	7,307	High	2
Kiser Lake Dam	1939	1,542	25	5,321	Significant	8
Shreve Lake Dam	1962	177	25	1,588	High	1
Wolf Run Lake Dam	1966	4,137	76	19,948	High	6
Findley Lake Dam	1956	885	33	16,212	High	7
Madison Lake Dam	1946	653	24	7,973	Significant	55
Forked Run Lake Dam	1952	1,518	55	15,095	High	9
Monroe Lake Dam	1956	499	58	25,243	High	5
Lake Loramie Dam	1844	3,018	23	8,548	High	78
Ross Lake Dam	1967	1,745	48	18,567	High	4
Clark Lake Dam	1957	453	23	34,570	High	7
Veto Lake Dam	1954	1,071	38	18,130	High	20
Lake White Dam	1935	6,015	39	8,064	High	35
Houston Upground Reservoir	1935	39	13	·	Significant	·
Baptist Foundation Lake Dam	1972	40	36	100	Significant	0
Candlewood Lake Dam	1962	63	23	145	Significant	2
Van Buren Lake Dam	1939	188	23	9,530	Significant	23
Lake Timberlin	1969	54	31	464	Low	0
Pleasant Valley Ranch Lake Dam	1965	83	26	329	Significant	0
Geottl Pond Dam	1959	35	23	·	Low	0
Shelby Upground Reservoir No. 2	1955	672	48	20	High	0
Cooke Pond No. 1 Dam	1964	28	17	225	Significant	0
Cooke Pond No. 2 Dam	1968	49	13	683	Significant	1
Stony Lake Dam	1928	98	18	2,018	Significant	12
Vo-Ash Lake Dam	1956	80	33	290	Significant	1
Stanley Lower Lake Dam	1933	52	25	401	Significant	1
Stanley Upper Lake Dam	1933	92	37	18	Significant	0
Puskarich Lake Dam	1971	173	48	3,121	High	1
Dunn Lake Dam	1963	70	25	987	Low	1
Tennessee Gas Station 214 Lake Dam	1950	65	22	391	Low	1
Lake Mohawk Dam	1963	8,434	42	9,405	High	6
Mohawk Lake Dam	1913	73	18	21	Significant	5
Beaver Creek Upground Reservoir	1971	2,406	34	100	High	0
Lake Otto Dam	1959	41	25	44	Significant	0
Hoar Pond Dam	1953	12	26	31	Low	0
Dawes Arboretum Lake Dam	1954	42	22	612	High	0
Dogwood Lake Dam	1968	165	38	282	Low	0
Buckeye Lake Dam	1832	14,000	15	20,700	High	44
Paulding Upground Reservoir	1966	1,136	24	·	High	0
Pancake Lake Dam	1965	111	20	4,880	Low	8
Lake Noah Dam	1938	135	31	22,917	Significant	9
Comet Lake Dam	1922	226	26	1,421	High	9
Hills Pond Dam	1938	134	15	673	Significant	14
Gorge Plant Dam	1912	929	57	4,657	High	330
Lower Carter Lake Dam	·	62	28	956	Significant	1
Wolf Creek Dam	1926	2,300	43	20,849	High	29
Columbia Lake Dam	1914	160	17	1,360	Significant	13
Tuscarawas River Diversion Dam	1956	443	26	15,080	High	35
Lake Dorothy Dam	1929	1,254	36	9,660	High	11
Loyal Oak Lake Dam	1930	26	31	1,471	High	0
Meadowbrook Lake Dam	1920	76	16	1,356	Significant	7
Lake Butler Dam	1961	95	51	2,150	High	1
Virginia Kendall Dam (Tract # 119-53)	1937	0	25	·	High	·
Bell Lake Dam	1965	41	27	231	Low	0
Camp Hilaka Lake Dam	1926	69	31	6,249	Significant	1
Kirby Lake Dam	1929	50	20	42	Low	0
Von Gunten Pond Dam	1965	33	30	566	Low	1
Crystal Lake Dam	1936	210	14	155	Significant	0
Lake Forest Dam	1952	144	16	4,887	Significant	5
Jefferson Lake Dam	1934	189	26	1,480	High	7
Bear Creek Lake Dam	1935	25	26	617	High	1
Clouse Lake Dam	1946	187	29	10,828	Significant	9
Cowan Lake Dam	1947	10,273	63	35,900	High	49
Donta Lake Dam	1965	62	42	13	Significant	0
Lake Milton Dam	·	120	34	2,348	Low	0
Di-Or Lake Dam	1972	33	32	99	Significant	0
Hammertown Lake Dam	1954	4,200	60	5,135	High	3
Jisco Lake Dam	1952	737	56	6,052	High	2
Lake Katharine Dam	1945	280	29	590	Significant	3
Jackson Lake Dam	·	306	28	791	Significant	5
Gallahan Pond Dam	1970	25	34	·	Low	0
Troy Low Head Dam	·	141	9	·	Significant	926
Swift Run Lake Dam	1876	452	39	3,547	High	7
Decker Lake Dam	1940	68	16	1,132	Significant	3
Hart Pond Dam	1952	21	25	106	Low	0
Ferguson Upground Reservoir	1959	6,753	49	940	High	1
Metzger Upground Reservoir	1946	3,719	45	800	High	0
Lost Creek Upground Reservoir	1917	2,624	38	·	High	0
Schoonover Lake Dam	1890	78	17	44	Low	0
Bresler Upground Reservoir	1970	15,220	38	300	High	1
Wieser Lake Dam	1870	41	15	384	Low	1
Refinery Upground West Reservoir	1968	90	9	1,231	Significant	1
Lima Upground Reservoir	1903	1,057	25	35	Significant	0
Bluffton College Lake Dam	1967	38	23	·	Low	0
Harper Pond Dam	1956	26	30	·	Low	·
Classicway Farm Lake Dam	1965	46	24	688	High	0
Sunrise Lake Dam	1931	175	54	4,450	High	0
Mid-Western Childrens Home Lake Dam	1967	18	15	1,470	Significant	1
Bel-Wood Country Club Lake No. 2 Dam	1965	31	47	350	Significant	0
Oeder Lake No. 3 Dam	1953	110	39	122	Significant	0
Newbridge Farms Pond Dam	·	35	38	2,553	Low	0
Rippe Pond No. 2 Dam	1968	21	34	52	Significant	0
Landen Farm Lake Dam	1975	538	40	15,300	High	3
Water's Edge Dam	1994	19	23	2,702	Low	1
Pine Hill Lake Dam	·	65	31	7,000	High	1
Elk Lake Dam	1964	56	20	960	Low	0
Burnap Lake Dam	1969	31	38	1,217	Significant	0
Lilley Lake Dam	1954	149	43	45	High	0
Werrmann Lake Dam	·	27	26	58	Low	0
Votel Lake Dam	1954	71	39	236	Significant	0
Shaker Run Dam	1973	3,195	90	25,000	High	6
Hammerhead Lake Dam	1955	27	14	520	Low	1
Walnut Hills Lake Dam	·	20	24	361	Significant	1
Stoneybrook Farm Lake Dam	1968	43	45	698	Significant	0
Arnett Lake No. 1 Dam	1967	29	26	591	Significant	0
Roemer Lake Dam	1960	98	52	374	Significant	0
Rose Lake Upper Dam	1950	134	36	691	Low	0
Dunlap Pond Dam #2	1957	13	30	·	Low	·
Wolfe Pond Dam	1967	28	26	·	Low	0
Dunlap Pond Dam #1	1954	46	22	·	Low	1
Christal Lake Dam	1964	92	22	282	Significant	1
Foxlair Farms Lake Dam	1955	67	27	1,015	Low	2
Clark Lake No. 2 Dam	·	162	40	166	Low	0
Darke Co. Wildlife Area Pond No. 5 Dam	1966	30	26	584	Low	0
Acton Lake Dam	1956	7,650	62	91,645	High	99
Gund Pond No. 1 Dam	1970	34	36	107	Low	0
Liggett Lake No. 1 Dam	1968	48	19	138	Low	0
Upper Wabash Structure No. 3 Dam	1963	394	28	9,598	High	5
Grand Lake St. Marys - West Embankment	1841	62,914	20	18,000	High	110
Grand Lake St. Marys - East Embankment	1841	62,194	18	·	High	110
Forty Acre Pond Dam	1840	271	15	809	Low	2
Nimisila Reservoir Dam	1936	9,400	44	9,926	High	16
West Reservoir Dam	1840	6,896	22	110	High	13
Long Lake Dam	1936	423	12	·	Significant	63
North Reservoir Dam	1840	582	13	362	High	1
East Reservoir Dam	1840	6,896	25	379	High	13
Battles Pond Dam	1952	53	17	570	Low	4
Blacklidge Lake Dam	1972	21	27	185	Significant	0
Camp Wesley Lake Dam	1955	61	14	210	Low	0
Appleseed Ridge Lake No. 1 Dam	1968	96	43	3,269	Significant	1
Appleseed Ridge Lake#2 Dam	1968	15	30	0	Low	0
Bell Lake Dam	1967	55	14	141	Low	0
Indian Lake Dam	1852	45,900	16	18,015	High	98
Jeans Lake Dam	1952	35	23	129	Low	0
Ravens Wood Lake Dam	1973	205	30	7,113	High	2
Wolf Lakes Dams	1958	59	29	811	Low	0
Wasmer Lake Dam	1960	86	20	747	Low	1
Granger Lake Dam	·	70	13	562	Significant	0
Mirror Lake Dam	1950	35	26	470	Low	0
Ledge Lake Dam	1965	50	38	626	Low	0
Pischieri Pond Dam	1957	34	37	135	Significant	0
Rustic Hills Lake Dam	1961	66	30	3,545	High	1
Torok Pond Dam	1958	16	35	13	Low	0
Rice Pond Dam	·	28	31	74	Low	0
Pine Hill Golf Club Lake No. 3 Dam	1969	77	56	256	Significant	0
Moll Lake Dam	1940	45	32	127	Significant	0
Chippewa Creek Structure Iv-A	1973	19	41	2,861	Significant	2
Blue Heron Lake No. 5 Dam	·	81	19	1,234	High	0
Seven Springs Lake Dam	1961	38	42	268	High	0
Siedel Lake Dam	1968	109	39	2,795	High	0
Osage Lake Dam	1955	81	28	2,124	Significant	1
Chippewa Creek Structure Ii-A	1969	48	35	2,871	Significant	3
Spencer Lake - North Dam	1960	155	15	99	Low	1
Sherwood Forrest Campgrounds Lake Dam	·	25	33	25	Low	0
Hinckley Lake Dam	1928	759	40	12,136	High	22
Lake Medina Dam	1966	1,385	40	402	High	1
Lake Brunswick Dam	1930	60	16	18,866	High	5
Modern Tool & Die Company Reservoir Dam	1967	56	31	2,973	Low	1
Washington Court House Ug No. 1 Dam	1956	650	21	·	High	0
Mckelvey Lake Dam	1926	3,275	73	2,442	High	9
Lake Hamilton Dam	1905	2,097	70	15,584	High	34
Burgess Lake Dam	1915	147	27	5,561	Significant	5
Evans Lake Dam	1948	6,402	49	10,772	High	14
Pine Lake Dam	1911	2,274	16	13,106	High	4
Upper Girard Lake Dam	1929	2,760	55	8,500	High	13
Highlandtown Lake Dam	1966	2,700	44	13,450	High	6
Guilford Lake Dam	1933	1,870	35	14,547	High	11
Zepernick Lake Dam	1950	129	14	138	Significant	0
Knox Lake Dam	1954	3,140	52	29,831	High	31
Lake Park Dam	1900	54	12	2,170	Low	4
Oxbow Lake Dam	1953	161	18	74	Low	0
Jackson Lake Dam	1939	1,173	23	23,382	High	19
Hargus Lake Dam	1956	1,798	66	6,850	High	7
Turkey Creek Lake Dam	1966	427	54	15,593	High	9
San Toy Dam	1916	34	26	433	High	1
Altiers Lake Dam	1949	26	19	962	High	1
Sunnyhill Freshwater Reservoir Dam	1959	203	45	11,409	Significant	2
Rush Creek Structure No. 1-B	1975	532	45	6,650	High	1
Essington Lake Dam	1945	60	20	3,487	Significant	1
Perry Reclamation Dam No. 3	·	75	48	1,754	High	0
Perry Reclamation Dam No. 2	·	21	27	163	Low	0
Perry County Recreation Assoc. Lake Dam	1969	25	19	109	Significant	0
Rushcreek Structure No. Iii-B	1968	154	38	4,243	Significant	2
Rushcreek Structure No. Iii-A	1969	82	34	4,490	High	1
Glass Rock Lake Dam	·	470	54	4,448	High	1
Schultz Lake Dam	1932	33	15	1,250	Low	3
Wingfoot Lake Dam	1916	1,625	14	1,013	Significant	3
Mogadore Reservoir Dam	1938	7,000	36	3,679	High	13
Indian Canoe Lake Dam	1958	64	28	130	Low	0
Lake Rockwell Dam	1913	8,172	35	15,732	High	208
Lake Hodgson Dam	1843	984	25	887	Significant	1
Tucaway Lake Dam	1973	326	25	9,552	High	2
Trail Lake Dam	·	95	12	960	Low	0
Sunny Lake Dam	·	180	10	108	Low	3
Roundup Lake Dam	1949	94	12	230	Significant	0
Colebrook Lake No. 1 Dam	1966	209	17	156	Low	0
Anglers Paradise Lake Dam	1951	62	35	1,040	Significant	0
Hunters Run Structure No. R-21	1961	30	28	784	Low	0
Hunters Run Structure No. R-23	1960	53	40	943	Significant	0
Kilbarger Pond Dam	1968	25	26	·	Low	0
Lang Lake Dam	1965	25	19	20	Low	0
Harper Lake Dam	1971	36	19	72	Low	0
Mcgill Pond Dam	1971	37	25	0	Low	0
Donley Lake Dam	1967	59	19	26	Low	0
Amicks Upground Reservoir	1968	804	40	45	High	0
Amann Reservoir Dam	1904	134	32	5,412	Significant	11
Candlewood Lake Dam	1974	3,100	58	46,230	High	12
Mount Gilead Lower Lake Dam	1930	38	20	2,600	High	9
Harding Area Council Bsa Dam	1973	88	31	1,917	Low	0
Strait's Lake Dam	1965	256	24	197	Significant	0
Muskingum River Lock And Dam No. 2	1841	3,024	18	18,197	Significant	8,029
Muskingum River Lock And Dam No. 3	1841	4,492	18	23,436	Significant	7,995
Muskingum River Lock And Dam No. 4	1841	3,345	17	23,219	Significant	7,947
Muskingum River Lock And Dam No. 5	1841	2,525	20	24,543	Significant	7,590
Stockport Mill Country Inn Water Power Project	1891	3,761	20	·	High	7,447
Muskingum River Lock And Dam No. 7	1841	2,999	15	16,827	Significant	7,422
Muskingum River Lock And Dam No. 8	1841	4,576	20	17,903	Significant	7,386
Muskingum River Lock And Dam No. 9	1841	3,120	18	22,630	Significant	7,196
Muskingum River Lock And Dam No. 10	1841	3,410	12	17,687	Significant	6,850
Muskingum River Lock And Dam No. 11	1841	1,461	15	11,594	Significant	6,036
Pine Creek Structure No. 8 Dam	1972	26	36	4,733	Significant	2
Celeryville Upground Reservoir	1965	1,182	22	·	High	0
Rainbow Lake Dam	·	97	31	1,008	Significant	1
Margaret Creek Structure No. 6	1967	465	42	4,436	High	4
Lake Austin Dam	1947	210	34	2,216	High	19
Caldwell Lake Dam	1969	775	75	4,635	High	5
Wabash Structure No. 1 Dam	1964	186	37	12,724	Significant	13
Upper Wabash Structure No. 2	1963	13	17	1,147	Low	1
East Fork Buck Creek Structure Iii-A	1966	5	35	984	Significant	0
East Fork Buck Creek Structure Iv-A	1966	148	39	4,051	Significant	2
East Fork Buck Creek Structure I-B	1966	41	38	1,160	Significant	1
Hunters Run Structure No. 9	1959	158	76	18,127	High	7
Hunters Run Structure No. R-63	1961	81	30	177	Significant	1
Hunters Run Structure No. 1	1955	48	41	619	Significant	1
Hunters Run Structure No. 2	1955	35	56	2,566	Significant	2
Hunters Run Structure No. 3	1960	0	27	4,010	High	7
Hunters Run Structure No. 4	1960	39	51	3,960	High	1
Hunters Run Structure No. 5	1961	23	39	12,390	Significant	2
Hunters Run Structure No. 6	1961	0	25	14,200	High	5
Hunters Run Structure No. 8	1959	23	53	18,633	High	2
Rushcreek Structure No. V-A	1970	42	27	8,704	Significant	2
Rushcreek Structure No. V-B	1971	54	32	6,424	Significant	2
Rushcreek Structure No. V-C	1969	34	36	3,659	High	3
Rushcreek Structure No. Vii-D	1972	99	32	1,286	Significant	2
Rushcreek Structure No. Vii-E	1967	27	28	4,815	High	1
Chippewa Creek Structure V-C	1971	26	28	3,231	Significant	4
Chippewa Creek Structure V-D	1971	25	32	2,010	Significant	2
Killdeer Wildlife Pond 27 Southwest Cell	·	630	10	·	Significant	0
Ellis Lake Dam	1961	233	25	1,770	Significant	8
Thoreau Pond Dam	1964	57	25	4,380	High	1
Hoover Dam	1956	72,510	86	148,003	High	190
Hap Cremean Lagoon #2	2010	100	12	·	Significant	0
Julian Griggs Dam	1905	4,322	52	136,562	High	1,044
Brookside Country Club Lake Dam	·	12	28	120	Low	2
Osu Golf Course Lake Dam	1936	53	17	1,501	Significant	1
Timberlake No. 1 Dam	·	108	48	726	Significant	0
Greenlawn Avenue Low Head Dam	1929	417	11	54,233	Significant	1,629
Sunbury Upground Reservoir No. 2	1964	110	20	6	High	0
Westerville Reservoir Dam	1960	685	47	10,690	High	3
Pomeroy Pond No. 1 Dam	1965	34	29	255	Low	0
Berkshire Lake Dam	1967	34	28	·	Low	0
O'Shaughnessy	1924	14,800	75	261,000	High	980
Barnesville Reservoir No. 3 Dam	1965	2,050	77	3,951	High	6
Raccoon Creek Upground Reservoir	1950	755	29	77	High	0
East Branch Reservoir Dam	1939	4,600	34	13,350	High	19
Bridge Creek Dam	1961	18,480	40	23,080	High	35
Bellevue Upground Reservoir No. 5	1946	2,094	28	50	Significant	0
Findlay Upground Reservoir No. 1	1950	4,008	28	108	High	0
Wellington Reservoir No. 2 Dam	1928	182	25	210	Significant	2
Norwalk Memorial Reservoir	1954	1,608	54	10,078	High	8
Norwalk Upper Reservoir	1896	595	39	9,426	High	7
Norwalk Lower Reservoir	1896	318	34	·	High	0
Wilmington Upground Reservoir No. 1	1945	307	19	·	High	0
Wilmington Upground Reservoir No. 2	1963	1,074	31	·	High	0
Southern Silica Pond No. 1 Dam	1955	0	31	79	High	0
Southern Silica Pond No. 2 Dam	1956	29	38	86	High	0
Van Wert Upground Reservoir No. 1	1949	1,100	22	49	High	0
Russellville Reservoir Dam	1963	90	39	2,798	Low	3
Yellow Creek Upground Reservoir	2006	1,277	30	100	Significant	0
Knoles Pond Dam	1965	57	28	2,400	Significant	0
Wellington Upground Reservoir	1972	3,970	35	·	High	0
Willard City Upground Reservoir	1971	6,134	65	·	High	0
Swanton Upground Reservoir	1937	270	24	·	Significant	0
North Baltimore Ug Res No. 1 & 2	1969	917	24	·	High	0
Clear Fork Reservoir Dam	1949	10,922	44	46,394	High	35
Deer Creek Reservoir Dam	1954	3,069	34	30,832	Significant	37
Blanchester Reservoir No. 4 Dam	1950	129	16	·	High	0
Findlay Upground Reservoir No. 2	1971	16,368	32	110	High	1
Mccomb Upground Reservoir No. 1	1953	70	17	·	High	0
Lake Mosier Upground Reservoir	1941	740	25	·	High	0
Lake Lamberjack Upground Reservoir	1919	250	19	76	High	0
Lake Daugherty Upground Reservoir	1891	125	12	·	Significant	0
Lake Mottram Upground Reservoir	1891	161	20	77	High	0
Fostoria Upground Reservoir No. 5	1958	2,446	36	·	High	0
Wauseon Upground Reservoir No. 2	1934	804	26	5	High	0
Wauseon Upground Reservoir No. 1	1921	0	29	5	Significant	0
Archbold Upground Reservoir No. 1	1957	233	15	·	High	0
Archbold Upground Reservoir No. 2	1961	555	22	·	High	0
St. Clairsville Reservoir No. 1 Dam	1929	158	36	3,479	High	1
St. Clairsville Reservoir No. 2 Dam	1920	52	31	595	High	1
New York Central Reservoir Dam	1935	32	12	1,784	Significant	8
Siemer Pond Dam	1944	20	29	266	Low	0
Crooksville Reservoir No. 3 Dam	1956	140	36	3,160	Low	1
New Lexington Reservoir Dam	1936	463	45	5,187	High	1
Somerset Reservoir Dam	1941	79	35	2,738	Significant	1
Attica Upground Reservoir	1955	21	14	·	Significant	0
Ella Street Low Head Dam	·	300	9	·	Significant	961
Bellevue Upground Reservoir No. 1	1874	215	20	·	High	0
Bellevue Upground Reservoir No. 3	1900	230	25	·	High	0
Bellevue Upground Reservoir No. 4	1919	426	18	·	High	0
Cedarville Upground Reservoir	1963	55	15	·	High	0
Newark Low Head Dam	1960	76	22	21,000	Significant	240
Sunbury Upground Reservoir No. 1	1955	77	17	·	High	0
Wellston Reservoir Dam	1920	78	41	·	High	0
Bethel Upground Reservoir No. 1	1960	0	25	10	Low	0
Horse Run No. 1 Dam Mb-42	1952	225	60	1,414	Significant	3
Horse Run No. 3 Dam Mb-40	1961	114	42	4,093	Significant	1
Ohio Power Company Pond Mb-115 Dam	1967	80	55	1,045	Significant	0
Ohio Power Company Pond Mmv-11 Dam	1964	39	50	284	Significant	1
Ohio Power Company Pond Mb-133 Dam	1966	21	35	8,542	Low	0
Ohio Power Company Pond Mb-141 Dam	1968	72	38	3,064	Low	0
Ohio Power Company Pond Mb-46 Dam	1960	280	59	1,182	Significant	4
Ohio Power Company Pond Mm-62 Dam	1964	238	55	300	High	0
International Animal Preserve Pond Dam #7	1961	107	34	210	Low	1
International Animal Preserve Pond Dam #8	1962	189	41	57	Significant	0
International Animal Preserve Pond Dam #9	1962	102	40	121	Low	1
International Animal Preserve Pond Dam #10	1976	615	76	4,565	High	2
Ohio Power Company Pond Mm-52 Dam	1962	75	35	14,565	Significant	2
Ohio Power Company Pond Nb-64 Dam	1962	18	38	7,763	Low	1
Sycamore Lake Dam	1961	53	21	743	Low	1
Snortin Ridge Farm Lake Dam	1964	367	57	10,853	Significant	2
Robins Ridge Golf Club Lake No. 1 Dam	1970	27	26	100	Low	0
Robins Ridge Golf Club Lake No. 2 Dam	·	23	28	721	Low	0
Basich Lake Dam	1963	27	38	6,323	High	1
Cooper Valley Llc Dam	1963	29	42	8	Significant	0
Mingo Sportsman Club Pond Dam	1969	52	49	20	Significant	0
Bates Pond Dam	1960	53	41	95	Significant	0
Peabody Coal Company Pond Dam	1967	34	34	145	Significant	1
Catfish Ii Dam	1967	103	25	18	Significant	1
Zion Lake Dam	1963	220	37	1,350	Low	2
Barnesville Lake Dam	1969	100	32	282	High	1
Stevens Lake Dam	1963	28	39	4,983	High	1
Brushy Fork No. 7 Dam	1950	48	47	535	Significant	1
Varkony Pond Dam	·	27	49	·	High	0
Jeffco Pond Dam No. 21	·	84	41	50	Significant	0
Jeffco Pond Dam	·	59	37	11	Low	0
Consol Pond Dam	1950	29	32	6	Low	0
Mader Pond Dam	1964	21	29	685	Low	0
Fritz Pond Dam	1974	49	26	166	Low	0
Dews Pond Dam	1972	53	12	10	Low	0
Meigs Mine No. 1 Water Supply Dam	1973	75	32	5,731	Significant	1
Ohio Power Company Pond Mb-165 Dam	1959	11	31	350	Significant	0
Luburgh Lake Dam No. 12	1963	281	43	3,188	Significant	2
Lake Sue Dam	·	68	23	64	Significant	0
Pschesang Lake Dam	1974	43	18	909	Significant	0
Stokes Lake Dam	1974	25	17	174	Low	0
Muskingum Valley Council Lake Dam	1974	43	25	372	Low	0
Forest Hill Park Dam No. 2	1963	1	37	901	High	3
Stingy Run Fly Ash Dam	1974	13,120	150	421	High	2
Cardinal Fly Ash No. 1 Dam	1974	3,870	242	10,930	High	1
Grubb Lake Dam	1974	45	21	60	Low	0
Christian Center Lake Dam	1974	60	27	228	Significant	0
Karr Lake Dam	1974	25	33	168	Low	0
Shelton Lake Dam	1974	18	26	84	Low	0
Camp Jungen Lake Dam	1974	13	27	129	Low	0
Chippewa Creek Structure Vii-C	1974	0	27	15,040	High	14
Caesar Creek Dam	1976	102,000	0	91,400	High	237
Caesar Creek Dam - Saddle Dike 2	1976	102,000	0	91,400	High	237
Caesar Creek Dam - Saddle Dike 3	1976	102,000	0	91,400	High	237
William H. Harsha Dam	1973	92,600	0	211,000	High	342
Alum Creek Dam	1974	81,700	0	61,500	High	123
Golden Bear Reservoir Dam	1972	7	26	123	Low	0
Lake Litchfield Dam	1975	515	69	6,651	High	1
Quail Hollow Lake Dam	1975	55	36	1,158	Low	0
Chateau Lakes No. 1 Dam	1975	26	68	235	High	0
Holiday Camplands Lake Dam	1975	84	10	4,500	High	4
Eramet Fluid Waste Pond 1a	1975	272	35	108	Significant	0
Howison Lake Dam	1975	28	32	754	Low	0
Gross Lake Dam	1977	426	50	5,295	Significant	2
Eramet Slag Tailings Pond	1975	64	25	218	Significant	0
Kettenring Hills Lake Dam	1976	39	30	595	Low	0
Lakeview Cemetery Flood Control Dam	1978	0	89	13,758	High	2
Elkem Effluent Treatment Pond No. 4	1977	152	18	72	Significant	0
Burton Lake Dam	1958	28	30	760	Low	0
Pine Lake Estates Dam	1962	82	26	1,100	High	1
Lake Ramona Dam	1929	24	23	1,902	Low	1
Moe Pond Dam	1975	31	19	251	Significant	0
New London Reservoir	1975	4,239	39	·	High	0
Izaak Walton Lake Dam	1960	63	31	769	High	1
Allegheny West Conference Cg Lake Dam	1950	54	33	1,814	Low	0
Lake Eagle Claw Dam	1962	245	54	320	Significant	0
Leeth Lake Dam	1965	67	42	36	Significant	0
Margaret Creek Structure No. 1	1972	80	32	12,180	High	3
Mcclure Lake Dam	1966	42	36	541	Low	0
Blanchester Reservoir No. 3 Dam	1934	49	15	371	High	1
Blanchester Reservoir No. 5 Dam	1970	154	14	·	Significant	0
Moore Lake Dam	1975	40	16	202	Low	0
Camp Julia Crowell Lake Dam	1920	25	25	1,160	Significant	2
Gavin Bottom Ash Pond	1974	470	37	320	High	0
Muskingum River Middle Fly Ash Dam	1968	445	100	552	High	0
Muskingum River Lower Fly Ash Dam	1968	340	75	436	High	0
Boka Woods Lake No. 1 Dam	1965	26	26	20	Significant	0
Ahrens Lake Dam	1976	44	34	313	Significant	0
Gleasonkamp Pond Dam	1964	15	25	2	Low	0
Lake Crum Dam	1974	29	23	120	Low	0
Briarwood Sportsman's Club No. 11 Dam	1976	181	50	649	High	1
Hosterman Lake Dam	1938	72	28	1,678	Low	1
Hutchins Lake Dam	1965	96	18	261	Low	0
Lake Maria Dam	1958	135	40	30	Significant	0
Lake Meek Dam	1965	30	26	29	Low	0
Walden Lake Dam	1975	250	26	13,894	Significant	1
Muskingum River Upper Fly Ash Dam	1975	6,150	152	56	High	0
Sharonville Retention Dam	1967	0	46	8,000	High	2
Lake Peniel Dam	1975	66	17	·	Significant	0
Dogwood Valley Camp Lake Dam	1956	14	26	218	Low	0
Big Pine Lake Dam	1959	40	28	17	Low	1
Swiger Pond Dam	1965	28	27	245	Low	0
Cardinal Lakes Dam	1976	35	24	613	Low	0
Rohr's Lake Dam	1971	194	22	3,056	Low	4
Mount Orab Upground Reservoir No. 2	1974	377	31	28	High	0
Schloss Pond Dam	1952	69	36	676	High	0
Paw Paw Lake Dam	1920	39	15	3,784	Low	3
Darrow Lake No. 1 Dam (Upper)	1960	17	26	157	Low	0
Bunker Hill Haven Lake Dam	1947	22	34	97	Low	0
Timbre Ridge Dam	1974	3,000	59	·	High	2
Clinton County Tributary No. 4 Dam	1976	0	20	3,372	High	1
Clinton County Tributary No. 1 Dam	1976	38	15	2,713	High	0
Tall Timber Lake Dam	1960	21	26	21	Low	0
Hickory Hollow Lake Dam	1969	100	32	586	Low	0
Plymouth Wastewater Lagoon	1966	0	10	·	Significant	0
Clermont Northeastern Schools Lake Dam	1956	12	33	2,358	Low	0
Ockenga Lake Dam	1966	28	29	19	Low	0
Lahmers Lake Dam	1967	34	25	14	Low	0
Ohio Power Company Pond Nb-43 Dam	1966	79	60	4,626	Significant	2
Ohio Power Company Pond Nb-90 Dam	1974	21	51	21,781	Significant	3
Schafer Lake Dam	1962	23	33	275	Low	0
Faith Ranch Lake Dam	1950	32	28	90	Significant	1
Beckjord Ash Pond C Dam	·	1,575	50	50	Significant	0
Ohio Power Company Pond Mb-144 Pond	1968	39	30	1,299	Low	0
Luburgh Lake Dam No. 5	1963	39	23	2,000	Low	0
Luburgh Lake Dam No. 11	1963	97	48	665	Significant	0
Olivito Lake Dam	1973	67	32	390	Low	0
Pride Valley Lake Dam	1957	32	26	100	Low	0
Charlemont Creek Lake Dam	1969	41	21	116	Low	1
Livezey Lake Dam	1975	33	33	153	Low	0
Summitcrest Farm Pond Dam	1960	53	39	250	Significant	0
Ottawa Upground Reservoir	1972	342	22	25	High	0
John Tumlin Pond Dam	1973	24	29	·	Low	0
Carol-Jane Lake Dam	1940	23	26	262	Significant	1
Reed Lake Dam	1970	23	27	176	Significant	0
Lake Henry Dam	1969	180	37	35	Significant	1
Pine Valley Sportsmen's Lake No. 3 Dam	1964	37	31	115	Significant	1
International Animal Preserve Dam 9715-009	1972	0	38	·	Low	0
International Animal Preserve Pond Dam #11	1965	95	38	461	Low	1
Darrow Lake Dam	1961	17	26	157	Low	0
International Animal Preserve Pond Dam #35	1975	26	38	1,126	Significant	0
International Animal Preserve Pond Dam #36	1975	51	42	18	Significant	0
International Animal Preserve Pond Dam #37	1976	8	13	39	Low	0
Rushcreek Structure No. Vi-D	1975	377	52	20,136	High	7
Blue Heron Lake No. 1 Dam	·	39	28	979	High	0
Champagne Shores Pond Dam	1971	46	18	·	Significant	0
Chippewa Creek Structure Viii-C	1976	0	25	12,545	High	4
Chippewa Creek Structure Viii-D	1976	15	51	4,493	Significant	2
Mccomb Upground Reservoir No. 2	1979	480	32	·	High	0
Evergreen Lake Dam	1955	61	20	722	Low	1
Lake Lavere Dam	·	34	13	30	Significant	0
Charolais Lake Dam	1975	44	31	283	Low	0
St. John Vianney Seminary Lake Dam	1942	27	17	1,573	Low	4
East Candlewood Lake Dam	1962	77	18	217	Significant	5
Csonka Brothers Pond Dam	1975	21	24	96	Significant	0
Dush Lake Dam	1975	280	13	510	Low	0
The Ohio Valley Coal Slurry Disposal Dam	1981	28,670	275	154	High	1
Eramet Waste Retention Dam	1982	2,078	118	418	High	1
Georgetown Upper Pond No. 2 Dam	1978	56	22	259	Low	0
R & F Lamira Freshwater Dam	1979	109	45	5,414	Significant	1
Mowrer Lake Dam	1961	58	9	28	Significant	0
Sally Buffalo Park Lake No. 2 Dam	1953	14	13	9	High	0
Forest Lake Dam	1973	12	30	70	Low	0
Woodland Altars Lake Dam	1964	15	24	96	Significant	0
Fish Lake Dam	1971	20	27	259	Low	0
Killen Station Ash Disposal Dike	1982	12,080	84	500	High	0
Mcclintock Lake Dam	1982	9	14	836	Significant	1
Artesian Lake Dam	·	31	18	520	High	0
Bailey Lake Dam	·	8	15	217	Significant	0
Bash Lake Dam	1962	104	24	65	Low	0
Big T Ranch Lake Dam	1963	129	25	375	Low	1
Bredenbeck Lake Dam	1969	29	18	421	Significant	1
Lake Silverstone Dam No. I	1955	38	18	1,437	Low	1
Thompson Lake Dam	1972	26	16	9	Significant	0
Elkem Fluid Waste Pond 3a	1967	236	40	20	Significant	0
Elkem Sludge Holding Pond 5c Dam	1988	160	20	20	Significant	0
Lake Kenisee Dam	1974	60	13	74	Significant	0
Naji Lake Dam	1963	21	19	2,020	High	2
North Kingsville Lake Dam	1968	17	13	664	Significant	1
North Kingsville Route 20 Lake Dam	1900	16	22	127	Significant	1
Sili Lake Dam	1972	53	15	101	Low	1
St. Marys Lime Sludge Lagoons	1988	92	13	10	Significant	0
Belmont Hills Country Club Lake Dam	1940	16	21	250	High	0
Meigs-Phillips I No. 1 Dam	1987	380	58	22,209	High	10
Fayetteville High School Lake Dam	·	15	15	79	High	0
Wagon Wheel Lake Dam	·	60	14	697	Significant	3
Pythias Lake Dam	1969	13	30	240	Low	0
Elk Creek Meadow Ridge Pond #2 Dam	1970	31	23	1,190	Significant	0
Stonegate Pond Dam	1985	16	21	263	High	0
Swan Lake Dam	1953	24	18	10	High	0
Boy Scout Dam	1984	530	53	3,232	Significant	1
P And J Lake Dam	1965	47	21	469	Significant	2
Lake Wohelo Dam	·	88	15	155	Low	1
Rohr Dam	1973	42	22	134	Significant	1
Spring Haven Lake Dam	·	46	26	107	Low	1
East Fork Buck Creek Structure Ii-B	1966	4	26	647	Significant	0
Shore Lake Dam	1964	29	18	34	Significant	0
Williams Lake Dam	1964	13	26	771	Low	0
The Van Dyke Club Lake Dam	1948	50	16	554	Low	0
Beckjord Ash Pond B	·	2,035	46	·	Significant	0
Beckjord Ash Pond C Ext. Dam	1985	2,267	40	160	Significant	0
Bristol Lake Dam	1954	19	13	700	Significant	0
Zf Batavia Retention Basin Dam	1980	2	22	244	Significant	0
Galley Hill Lake Dam	1960	67	63	33	High	0
Glen Willow Lake Dam	·	29	18	299	Significant	0
Hidden Hill Lake Dam	1943	58	32	799	Low	1
Rouster Lake Dam	1947	36	20	1,406	Significant	0
Strader Lake Dam	1954	36	51	695	Significant	0
Sugar Hill Gun Club Lake Dam	1960	22	14	963	Low	1
Fugate Lake Dam	1969	15	13	14	Significant	0
White Lake Dam	·	18	26	215	Low	0
Willowbrook Lake Dam	1975	24	23	232	High	0
Zimmer Waste Water Pond Complex Dam	1989	166	21	122	Significant	0
Branjarzak Lake Dam	·	25	25	54	Significant	0
Blanchester Reservoirs No. 1 & 2 Dam	1924	46	10	·	Significant	0
Burtonville Lake Dam	1972	18	25	240	Significant	0
Clarksville Upground Reservoir	1949	28	18	·	Significant	0
Ellis Lake Dam	1986	21	31	38	Low	0
New Vienna Wastewater Treatment Lagoons	1987	48	14	28	Significant	0
Roberts Lake Dam	·	17	19	151	Significant	0
Snow Hill Inc. Lake Dam	1969	26	24	239	Significant	0
East Palestine Reservoir Dam	·	16	18	1,802	Significant	5
Lower Wallace Lake Dam	·	12	22	618	Significant	1
Ludwig Dam	·	32	15	6	Low	0
Salem Regional Campus Lake Dam	1977	23	26	87	Significant	0
Sevakeen Country Club Lake Dam	1925	32	17	1,036	Significant	6
Spring Valley Lake Dam	·	41	14	104	Low	1
Broken Aro Sediment Pond No. 46 Dam	1980	22	30	936	Low	0
Broken Aro Sediment Pond No. 47 Dam	1980	52	40	4,137	Low	1
Conesville Plant Ash Pond Complex	·	1,228	35	45	Significant	0
Forest Hill Lake Dam	1947	43	31	217	Low	0
Herbert Pond Dam	1979	25	26	191	Low	0
Bucyrus Upground Reservoir No. 4	1983	3,867	29	64	High	0
Acacia Country Club Lake Dam	·	35	38	757	Significant	0
Briar Hill Lake Dam	1913	26	24	1,381	High	0
Hawthorne Valley Country Club Lake Dam	·	25	31	·	Low	0
Hollenbeck Lake Dam	1953	55	24	566	High	1
Marshfield Lake Dam	1940	35	15	390	Significant	1
University School Lake Dam	1968	30	53	4,069	Significant	0
Iroquois Lake Dam	1960	52	17	58	Significant	0
O'Neil Lake Dam	·	42	26	139	Low	0
Paul's Lake Dam	·	16	17	387	Significant	0
General Motors Primary Lagoon	1940	198	30	100	Significant	0
General Motors Secondary Lagoon	·	300	29	784	Significant	1
Ashley Waterworks Reservoir	1954	0	12	·	Significant	0
Del-Co Upland Storage Reservoir No. 2	1989	702	43	23	High	0
Joseph Green Pond Dam	1962	18	29	·	Low	0
Havens Lake Dam	1980	22	38	520	Low	0
Homestead Neighbors Lake Dam	1949	7	14	344	Significant	0
Horace Troop	1956	16	21	·	High	0
Lake Hill Lodge Dam	1962	21	14	373	Significant	0
Libertyvale Lake Dam	·	7	14	376	Significant	0
Pomeroy Pond No. 2 Dam	1965	35	32	255	Low	0
Work Lake No. 2 Dam	1966	37	29	177	Low	0
Dogwood Lake Dam	1960	19	36	808	Low	0
Geneva Hills Lake Dam	·	9	30	1,130	Significant	0
Hintz Lake Dam	1964	16	26	296	Low	0
Lake Loretta Dam	·	53	35	433	Significant	0
Rushcreek Structure No. Vi-A	1982	3,570	58	74,225	High	28
Rushcreek Structure No. Vii-C	1976	210	36	4,542	Significant	6
Walden Lake Dam	1958	31	17	910	Low	1
Wetherall Lake Dam	1956	23	25	1,051	Low	1
Star Lite Lake Dam	·	59	25	21	Low	0
Anderson Lake Dam	1961	17	25	350	Significant	0
Schrock Lake Dam	1965	24	10	1,820	Significant	0
Twin Lakes Upper Dam	1927	19	25	1,150	Significant	4
Delta Upground Reservoir No. 2	1984	1,230	42	110	High	0
Fayette Sewage Lagoons	1963	104	15	·	Significant	0
Kyger Creek Bottom Ash Pond	1955	512	41	215	Significant	0
Kyger Creek South Fly Ash Pond	1955	1,952	40	220	Significant	0
Kyger Creek Tailings Pond	1955	2,489	32	198	Significant	0
Bainbridge Quarry Lake Dam	1989	47	13	200	Low	0
Brown Lake Dam	1968	21	23	905	Significant	0
Harvey's Lake Dam	1952	19	19	495	Significant	1
Fowler's Mill Golf Course Upground	1971	175	12	·	Significant	0
Hidden Lakes Dam	1954	15	22	316	Significant	1
Lake-In-The-Woods Dam	1985	168	26	2,410	High	0
Loecy Pond Dam	·	29	23	192	High	0
Silver Lake Dam	·	38	8	32	Low	0
Shadow Hill Lake Dam	1973	19	21	1,142	High	0
Cedarville University Lake Dam	1964	20	16	800	Significant	0
Dominick Lofino Park Lake Dam	1990	37	29	3,062	High	0
Fisher Lake Dam	1960	41	22	958	Significant	1
Mystic Lake Dam	1950	16	12	176	Low	0
Tara Lake Dam	1969	22	20	84	Significant	0
City Of Cambridge Park Dam	·	9	16	536	Significant	0
Jack Towne Dam	1948	39	16	731	Low	0
Heil Lake Dam	1991	131	26	2,717	Low	1
Larrick Lake Dam	1981	14	35	74	Low	0
Ohio River Collieries Sediment Pond Dam	1979	11	26	2,757	Low	1
Ramage Lake Dam	·	6	20	442	Significant	0
Johnson Lake Dam	1976	26	12	191	Low	0
Wong Lake Dam	·	13	28	18	Significant	0
Basin `A'	1976	0	50	180	Significant	0
Basin `B'	1981	0	50	180	Significant	0
Crossings Of Springdale Lake No. 1 Dam	1979	11	29	175	Significant	0
Eagles Lake Dam	1988	11	30	827	Significant	0
Hermitage Club Lake Dam	1918	13	38	200	Significant	0
Kenridge Lake Dam	·	56	20	130	Significant	0
Lincoln Heights Upground Reservoir	1942	0	30	44	High	0
Mallard Cove Lake Dam	1984	26	36	1,155	Significant	0
Peter Lake Dam	1936	39	50	583	Significant	0
Tanager Woods Lake Dam	·	14	19	120	Significant	0
Wasmer Lake Dam	1960	19	27	797	Low	0
Dickerson Slurry No. 3 Dam	1982	2,280	54	457	Significant	1
Hills Of Eden Lake Dam	1970	13	16	950	Low	1
Sally Buffalo Park Lake No. 4 Dam	1953	9	18	18	High	0
Lamborn No. 3 Dam	1968	29	35	593	Low	0
Akita Lake Dam	·	46	29	1,028	Low	0
Happy Hills Lake Dam	1954	60	44	2	Significant	0
Holiday Haven Lake Dam Ii	1965	15	27	152	Low	0
Holiday Haven Lake Dam I	1961	58	38	946	High	0
Lake Arrowhead Dam	·	28	29	1,078	Significant	0
Lake Deerfoot Dam	·	14	16	1,368	Significant	0
Sand Run Dam	1964	10	22	22	Significant	0
Whispering Hills Recreation Lake Dam	1968	39	23	139	Significant	0
Fairgreens Golf Club Dam	1973	15	20	318	High	0
Freshwater Cross-Valley Pond 001 Dam	1981	24	17	475	Significant	0
Shady Grove Dam	1962	10	16	494	Significant	0
Upper Lake Milton Dam	·	19	29	17,351	Low	0
The Shire Lake Dam	1963	16	27	418	Significant	0
Waterloo Coal Company Dam	·	32	19	38	Low	0
Waterloo Coal Double-Cell Slurry Dam	1981	135	34	57	Significant	0
Cardinal Fly Ash No. 2 Dam	2014	11,400	250	5,409	High	2
Bloomingdale South Lake Dam	·	6	19	·	Low	1
Bloomingdale North Lake Dam	1975	53	33	48	Significant	1
Pine Valley Sportsmen's Lake No. 2 Dam	·	30	21	58	Significant	0
Anjecondy Lake Dam	1950	48	29	1,215	Significant	0
Cline Lake Dam	1958	30	22	310	Low	0
Lake Ralph Dam	·	22	18	35	Significant	0
Knox Cattle Company Dam	1945	18	20	114	High	0
Millwood Plant Dam	·	9	14	49	Significant	0
Workman Lake Dam	·	41	30	309	Significant	0
Bass Lake Dam	1966	30	20	8	Significant	0
Camp Lejnar Lake Dam	1967	22	13	500	Low	0
Brightwood Lake Dam	1967	45	16	1,450	High	5
Bader Lake Dam	1961	25	22	28	Significant	0
High Lands Golf Club Dam	1988	44	31	963	Low	1
William Smith Pond Dam	1983	26	26	113	Low	0
Owens Corning Science & Tech Lake Dam	1958	8	24	406	Significant	0
Mills Lake Dam	1965	11	25	194	Significant	0
Pine Lake Dam	·	32	25	98	High	0
Taylor Lake Dam	1972	18	23	250	Significant	0
Holland Lake Dam	·	22	34	131	Significant	0
Caley Woods Wildlife Lake Dam	1987	37	19	462	Low	0
East Branch Black River Dam No. 2	·	88	15	1,052	Significant	222
Hickory Nut Golf Course Lake Dam	1963	23	17	92	Significant	1
Oberlin Waterworks Upground No. 1&2	·	44	12	1	Significant	0
Shilo Lake Dam	1950	31	29	757	Low	1
Collins Park Wtp Sludge Lagoon A	1954	190	12	35	Significant	0
Collins Park Wtp Sludge Lagoon E	1987	109	33	100	Significant	0
Collins Park Wtp Sludge Lagoons B & C	1987	450	21	200	High	0
Baker Lake Dam	·	30	13	209	Low	0
Chippewa Creek Structure Iii-A	1980	171	55	32,397	High	6
Lindenwood Lake Dam	1958	27	29	327	Significant	0
Gerding Lake Dam	·	31	30	150	Low	0
Imars Lake Dam	1966	59	22	64	Significant	0
Malek Lake Dam	1967	26	17	357	Significant	0
R-Farm Lake Dam	1939	44	30	1,954	Low	1
Schmidt Lake Dam	·	45	20	3	Low	0
Spencer Lake - South Dam	1960	299	17	106	Significant	0
Sunset Lake Dam	·	39	17	626	Significant	1
Terraco Lake Dam	·	14	20	139	Significant	0
Forest Meadows Lake Park Dam	·	13	13	109	Significant	0
Veverka Lake Dam	1966	23	22	318	Significant	0
Wadsworth Sludge Lagoon	1990	0	25	4	Significant	·
Weymouth Valley Lake No. 1 Dam	1968	15	12	2	Significant	0
Salerno Lake Dam	1982	69	26	1,438	High	0
Willow Lake Dam	·	23	28	116	Significant	0
Hidden Lakes Upper Dam	·	24	26	216	Significant	0
Maplewood Lake Dam	1950	22	19	252	Significant	1
Meigs Mine No. 1 Slurry Impoundment	·	8,387	131	2,415	High	1
Echo Lake Dam	1876	46	14	926	High	2
Franz Pond Dam	1876	29	21	560	High	1
Hidden Lake Dam	1977	17	21	81	Significant	0
Baker Lake Dam	·	38	37	133	Significant	0
Baker Pond Dam	·	12	25	115	Significant	0
Shadow Lake Dam	·	18	27	83	Low	0
Carriage Hill Reserve Lake Dam	1982	68	24	6,900	Significant	0
Newfields Development Lake Dam	1973	10	14	905	High	0
Possum Creek Reserve Lake Dam	1979	90	20	543	Low	0
South Montgomery County Low Dam	1988	825	11	·	Significant	2,647
Davis Pond Dam	1969	48	32	·	Low	0
Laurel Lake Dam	1955	48	20	485	Significant	0
Hankins Lake Dam	1966	44	23	390	Low	0
Rogers Lake Dam	1900	30	14	354	Significant	0
Lake Legendary Dam	1968	80	45	171	Significant	0
Columbus Southern Power Company Dam Ma-11	·	42	23	60	Low	1
Hetrick Lake Dam	·	21	29	44	Low	0
Lakeview Dam	1959	29	15	194	Significant	0
Monroe Basin Dam	·	55	14	500	Low	0
Muskingum College Lake Dam	1935	21	28	396	High	0
International Animal Preserve Pond Dam #50	·	35	20	83	Low	0
Ohio Power Company Pond Dam Mum-100	·	23	15	539	Low	0
International Animal Preserve Pond Dam #65	·	34	43	·	Significant	0
International Animal Preserve Dam No. 63	·	27	20	·	Low	0
Ohio Power Company Pond Mum-67	·	10	36	103	Low	1
International Animal Preserve Pond Dam	·	0	51	·	Significant	0
International Animal Preserve Pond Dam #49	·	52	22	136	Low	0
International Animal Preserve Pond Dam #66	·	4	18	·	Low	0
International Animal Preserve Pond Dam #23	·	11	8	176	Low	0
Rhoads Lake Dam	1964	66	21	42	Low	0
Simco-Peabody Sediment Pond No. 28 Dam	1984	1	26	2,010	Low	1
Zanesville State Nursery Lake Dam	·	74	32	8,081	High	3
Darty Stowe Lake Dam	1987	37	38	1,075	Significant	0
Buffalo Hills Lake Dam	1973	10	15	502	Significant	0
Allen No. 1 Dam	1981	43	59	214	High	0
Allen No. 2 Dam (Racetrack Dam)	1983	29	35	68	Low	0
Deerfoot Lake Dam	·	25	28	2	Low	0
Rushcreek Structure No. Iv-C	1976	96	29	7,789	High	5
Tecumseh Lake Dam	1954	27	25	526	Significant	1
Thomas Lake Dam	·	46	27	134	Low	0
Fortney Lake Dam	1960	28	15	644	Low	0
Arnett Lake Dam	1973	17	22	744	High	0
Hammond Lake Dam	·	10	28	544	Low	0
Brimfield Lake Dam	1959	80	16	2,347	High	3
Burrows Lake Dam	1957	48	15	697	Low	0
Miner Pond Dam	1967	35	24	64	Significant	0
Springwater Park Lake Dam	1945	23	22	16	Significant	0
College Corner Upground Reservoir No. 2	1965	0	14	·	Significant	0
Halls Lake Dam	1935	10	11	848	Low	2
Brown & Haskins Lake Dam	1967	24	27	439	High	0
Hutchison Lake Dam	1961	36	42	243	Significant	0
Lake Royal Dam	1975	55	34	423	Significant	0
Lake Royce Dam	1960	68	27	700	Low	0
Little Pond Dam	1973	·	30	·	Low	·
Luehrs Lake Dam	·	36	17	56	Significant	0
Pixelle Upground Reservoir	·	189	14	·	Significant	0
Valley Vista Golf Course Lake Dam	1966	14	27	135	Low	0
Kinskey Lake Dam	1969	51	35	981	High	0
Lake Emma Dam	1987	19	27	224	Significant	0
Mcbride Lake Dam	·	11	21	860	Significant	1
Pond Lick Lake Dam	1938	25	22	908	High	3
Scioto County Sludge Lagoon	1980	32	46	508	Significant	0
Wolfden Lake Dam	1936	19	27	575	High	1
Fawn Lake Dam	1985	57	20	333	Low	0
Sidney Lime Sludge Lagoon	1978	124	16	7	Significant	0
Clapper Lake Dam	·	34	17	328	Significant	1
Gonzalez Lake Dam	1995	32	13	934	Low	1
Lake Louise Dam	1983	17	25	527	Low	0
Marko Lake Dam	1962	27	20	15	Significant	0
Meadow Lake Dam	·	19	19	1,544	Significant	1
Peterson Lake Dam	1954	35	17	310	Low	0
Poth Lake Dam	1960	19	22	523	Significant	0
Shady Hollow Pond Dam	·	32	14	70	Low	0
Springwood Lake Dam	1989	56	24	2,940	Low	1
Lords Lake Dam	1985	120	22	522	High	0
The Wilderness Lower Lake Dam	1966	29	22	300	Low	0
Villa Lago Dam	·	26	27	155	Low	0
Bilinovich Recreation Area Lake Dam	1963	31	28	83	Low	0
Lake Forest Estates Dam	·	8	21	1,580	Significant	1
Crouse Pond Dam	·	12	12	390	Significant	3
Gund Pond No. 2 Dam	1970	14	26	37	Low	0
Hudson Springs Lake Dam	1948	219	18	4,008	Low	2
Munroe Falls Park Lake Dam	1937	80	26	1,755	Low	1
Reservoir Park Upground	1910	52	26	37	High	·
Silver Creek Lake Dam	1990	235	25	4,262	High	2
Steeplechase Lake Dam	1989	11	21	2,390	High	0
Sylvan Dam	·	0	25	·	High	·
Paradise Lakes Campground Lake Dam	1958	108	22	25	Low	0
Turon Lake Dam	1954	66	19	133	Significant	1
Youngstown Country Club Lake Dam	·	22	15	100	Significant	1
Twelve Pack Lake Dam	1985	24	28	1,990	Low	1
Devils Den Park Lake No. 2 Dam	·	31	29	87	Low	0
Arnold Lake Dam	·	32	35	77	Low	0
Maple Valley Lake Dam	1970	13	27	173	Significant	0
Memory Lake Dam	·	10	27	132	Significant	0
Sleepy Hollow Lake Dam	·	23	28	87	High	0
Snyder's Horse Farm Pond Dam	1961	15	25	74	Low	0
Sugarcreek Sportsman Club Lake Dam	1957	16	19	33	High	0
Church Lake Dam	1966	32	22	8	Significant	0
George's Pond Dam	1960	13	30	251	Low	0
Tennessee Gas Station 204 Lake Dam	1950	42	30	156	Low	0
Arnett Lake No. 2 Dam	1967	13	13	680	Significant	0
Anderson Lakes Farm Dam No. 1	·	23	19	1,648	Significant	0
Cincinnati Semiconductor Lake Dam	·	42	22	1,096	Significant	0
Classicway Farm Lake Dam	·	22	18	210	Low	0
Fenwick Home Company Lake Dam	1969	13	21	140	Significant	0
Goodrich Lake Dam	1994	21	22	920	Significant	0
Remick Lake Dam	1966	27	29	1,091	High	0
Sycamore Creek Lake Dam	·	30	33	330	Low	0
Carman Lake Dam	·	16	19	1,720	Significant	0
Davlin Lynch Llc Dam	·	26	23	467	Significant	0
Washington Co. Fish & Game Club Lake Dam	1959	43	18	707	Low	1
Erdos Lake Dam	1983	41	15	369	Low	1
Franchester Lake Dam	1966	24	20	201	Low	0
Orrville Farmer's & Sportsmen's League Dam	·	22	16	120	Low	0
Stoll Lake Dam	1956	29	26	378	Low	0
Ellis Lake No. 2 Dam	1955	45	25	260	Significant	0
Killdeer Wildlife Pond No. 3 Dam	·	63	7	1,200	Low	0
Rushcreek Structure No. Iii-E	1986	459	42	14,701	Significant	8
Sauer Lake Dam	1955	21	14	505	Low	1
Lake Gloria Dam	·	32	11	1,166	Low	0
Wiemeyer Lake Dam	1986	42	52	48	Significant	0
Forest Meadows Lake Dam	1959	15	11	16	Significant	0
Rushcreek Structure No. Vii-A	1985	159	41	13,760	High	2
Ansonia Sewage Lagoon I	1970	26	12	3	Significant	0
Chester Lake Dam	1965	39	19	110	Low	0
Chestnut Ridge Lake Dam	·	8	11	1,353	Low	16
Clear Creek Lake Dam	·	53	21	130	Low	0
Crawford Fitting Company Pond Dam	·	40	14	12	Low	0
Uss/Kobe Lake Dam	·	46	15	226	Significant	0
Ridgewood Lake Dam	1965	22	12	898	High	1
Gallery Lake Dam	·	36	12	338	Significant	0
Sharon Golf Club Lake Dam	1960	31	15	3,615	Low	4
Fischer Lake Dam	·	27	14	413	Significant	6
Woodmoor Dam #1	1978	13	17	1,143	Significant	1
St. Henry Wwt Lagoon	1988	395	27	20	Significant	0
Hickory Hills Park Lake Dam	1958	42	12	80	High	0
Veterans Memorial Reservoir	1992	4,013	32	47	High	0
Mirror Lake Dam	·	33	17	347	Low	0
Lexington Glen Dam	1990	27	23	3,388	High	0
Neutralized Water Impoundment 2	1989	0	22	15	Significant	·
Coldwater Wastewater Treatment Dam	1991	0	25	100	Significant	0
Robbins Pond Dam	1992	41	18	1,097	Low	0
Woodmoor Dam #2	1978	17	16	·	Significant	1
Ranger Lake Dam	1980	15	26	350	Low	0
City Of Shaker Heights Dam	·	22	19	874	Significant	1
Clague Park Lake Dam	1994	11	20	8,320	Low	3
Bowling Green Upground Res & Sludge Lgns	1989	434	22	·	High	0
Providence Dam	1907	8,925	9	·	High	6,058
Grand Rapids Dam	1907	8,925	8	·	High	6,058
Grenke Lake Dam	·	51	16	174	Low	1
Metamora Upground Reservoir	1986	55	11	5	Low	0
Palmetto Lake Dam	·	14	12	60	Significant	1
Bethel Upground Reservoir No. 2	1991	0	23	40	Low	0
Hillsboro Upground Reservoir	1991	491	48	213	Significant	0
Village Of Amanda Dam	1992	37	16	9	Significant	0
Montezuma/Club Island Wwt Lagoons	1985	216	17	·	Significant	0
Samanna Dam	1992	39	24	1,142	Low	0
Hance Lake Dam	1991	80	32	203	Low	0
Luczek Lake Dam	1992	199	41	3,721	Significant	1
Hamilton Lime Sludge Lagoon	1992	100	11	1	Significant	0
Red Hill Farm Dam No. 1	1994	51	48	34	Significant	0
Red Hill Farm Dam No. 2	1994	12	27	449	Low	0
Red Hill Farm Dam No. 3	1994	95	44	275	Significant	0
Red Hill Farm Dam No. 4	1994	27	40	23	Low	0
Lower East Fork Equalization Basin	1992	0	20	128	Significant	·
Bella Luna Lake Dam No. 1	·	148	22	·	Significant	4
Bayberry Cove Development Dam	1979	5	15	1,805	Significant	0
Bilinovich Lake Dam	1992	23	57	151	Significant	0
South Sedimentation Basin Dam	1991	36	22	2,887	Low	0
South Vienna Wwt Lagoons	1992	19	26	·	Significant	0
Hoose Road Retention Dam	1993	4	22	2,052	High	1
Lamborn No. 4 Dam	1968	11	39	758	Low	0
Sands Hill Slurry Impoundment Dam	1992	0	131	·	High	0
Deer Lake Estates Dam	1992	62	20	5,412	Low	4
Rushcreek Structure No. Ii	1985	27	31	6,982	Significant	3
Alliance Sludge Lagoons	1993	0	12	·	Significant	·
Lambert Lake Dam	1992	322	14	737	Low	0
Tarhe Dry Dam	1995	4	30	9,611	High	1
Slate Run Metro Park Dam	1993	75	15	460	Low	0
Shelby Upground Reservoir No. 3	1993	1,060	28	53	High	0
Swan Lake Dam	·	10	16	·	High	3
Avis Dam	1997	61	27	·	Low	2
Goose Creek Dam	1993	25	29	241	Low	0
Northpark Center Retention Dam	1995	15	9	3,228	Low	2
Wakeman Wwt Lagoon	1993	63	13	11	Significant	0
Oakwood Wwt Lagoon	1995	0	10	4	Significant	0
Cygnet Wwt Lagoon	1994	100	9	2	Significant	0
Lincoln Estates Lake Dam	·	27	17	2,732	Significant	1
Hamilton Fairfield Airport Dam	1995	0	16	2,764	Low	2
Waynoka Wwt Lagoon	1995	6	13	5	Significant	0
Willis Lake Dam	1995	29	31	200	Low	0
Terry Thompson Dam	1995	54	27	618	Significant	0
Del-Co Upland Storage Reservoir No. 3	1994	638	51	23	High	0
Big Island Wetland Dam	1995	112	9	364	Significant	1
Four Mile Creek Site 9b Dam	1995	52	29	7,023	Low	1
Simco Sediment Pond E-55 Dam	1989	44	34	2,308	Low	1
Del-Co Upland Storage Reservoir No. 4	1995	629	53	23	High	0
Wayne Wwt Lagoon	1996	0	9	·	Significant	0
New Waterstone Lake Dam	1997	38	19	1,978	Significant	0
Mcclure Wwt Lagoon	1997	56	9	15	Significant	0
Hunters Run Structure R-42	1959	5	24	450	High	0
Amann Reservoir Upper Dam	1964	55	22	5,111	Significant	11
Sandy Ridge Wetland Dam	1997	111	14	324	Low	0
Alum Creek Upground Reservoir	1997	1,376	24	42	High	0
Neutralized Water Impoundment 3	1997	37	20	15	Significant	0
Wright Farm West Detention Basin Dam	1996	0	26	5,960	High	1
Four Mile Creek Site 15 Dam	1997	21	23	370	Low	1
Nettle Lake Wwtp Lagoons	1996	41	11	·	Significant	0
Fairfield Detention "A" Dam	1997	0	24	9,943	High	1
Rushcreek Structure No. Vi-F	1987	71	33	3,840	Significant	3
Savannah Wwtp Lagoons	1996	32	44	·	Significant	0
Aberdeen Development North Retention Dam	1997	36	13	3,721	Significant	0
Strimple Creek Dam	1995	181	30	2,984	Low	2
Fairfield Detention "C" Dam	1998	0	31	23,590	High	3
Mt. Victory Sewage Lagoon	1996	0	13	50	Significant	·
Lake Quincy Dam	·	38	18	117	Significant	0
Obringer Upground Reservoir	1990	17	13	6	Significant	·
Larue Wastewater Treatment Lagoon	2001	25	10	10	Significant	0
Kerruish Stormwater Control Facility Dam	1954	44	40	8,000	High	4
Slifko Pond Dam	1999	29	17	134	Low	0
Campden Lakes North Dam	1998	150	10	260	Significant	0
Campden Lakes South Dam	1998	64	11	295	Significant	0
Winton Woods Golf Course Lake "E" Dam	1994	64	33	465	Significant	0
Russellville Wwt Lagoon Basin #1	1999	14	13	1	Significant	·
Russellville Wwt Lagoon Basin #2	1999	0	12	1	Significant	·
Hunters Run Structure R-61	1959	3	26	1,305	Low	0
Four Mile Creek Site 14 Dam	1998	11	22	820	Low	1
Genoa Ug Sewage Disposal Lgn Cells 1,2,3&4	1963	174	10	50	Significant	0
Forbidden Lake Dam	1998	125	13	15	Low	0
Bidwell/Porter Wwt Lagoon	1999	92	18	4	Significant	0
Beck Pond Dam	2000	28	25	522	Significant	0
Jewett Wwt Lagoon	1999	56	12	14	Significant	0
Echo Valley Lake Dam	1999	40	39	179	Low	0
Graymont Sludge Lagoons	1981	118	18	·	Significant	0
New Washington Wwt Lagoon	2000	102	13	·	Significant	0
Zupan Lake Dam	2000	306	31	2,709	Low	1
Monroeville Upground Reservoir	2000	199	17	14	Significant	0
Willoway Upground No. 5 Dam	1999	37	12	28	High	0
Four Mile Creek Site 10	2000	22	17	2,967	Significant	1
Dillon Wetland Mitigation Dam	2000	75	7	1,700	Low	0
Turner-Jordan Lake Dam	1980	127	8	1,000	Low	1
Letha House Lake Dam	2001	35	24	260	Significant	0
Marge Schott Lake Dam	2000	437	140	3,356	High	0
Winton Woods Sediment Retention Pond	1995	558	55	·	Significant	0
Little Mountain Dam "A"	·	23	46	982	Significant	0
Washington Court House Ug No. 2 Dam	2001	274	19	32	Significant	0
Sedimentation Pond No. 1 Dam	2000	36	28	910	Significant	0
Edison Wwt Lagoon	2000	72	10	·	Significant	0
Fieldstone Lake Dam	2001	60	35	151	Significant	0
North Broadway Low Head Dam	1969	132	6	12,940	Significant	522
Jm Stuart Station Ash Pond No. 10 Dam	2001	880	24	43	Significant	0
Equinus (Legendary Run) Lake Dam	2001	49	45	1,689	High	0
Fort Jennings Wwt Lagoon	2002	0	15	12	Significant	0
Runkle Farm Pond Dam	2001	200	22	511	Significant	0
Rawson Wwt Lagoon	2003	43	15	11	Significant	0
Fish Bones Lake Dam	2003	48	51	993	Significant	0
Republic Wwt Lagoon	2003	49	12	2	Significant	0
Charbonneau Lake Dam	2002	99	20	·	High	0
Upper Sandusky Reservoir #2	2005	1,594	25	·	Significant	0
Lyons Wwt Lagoon	2003	33	8	8	Significant	9
West Mansfield Wwt Lagoon	1997	52	10	·	Significant	0
Aston Oaks Lake Dam	2000	181	66	22,094	High	1
Crystal Lake Dam	1930	21	11	648	Low	5
Brye Lake Dam	1988	13	12	49	High	0
Cline Lake Dam	2003	97	47	3,468	High	0
Del-Co Upland Storage Reservoir No. 5	2004	3,069	45	173	High	0
Walter C. Best Lake Dam	·	150	15	184	Low	0
Decker Lake Dam	1993	20	23	901	Significant	0
Zoldan Pond Dam	2003	44	31	390	Low	0
Rushcreek Structure No. Iii-C	1977	0	36	16,397	High	2
Rushcreek Structure No. Iv-A	1979	0	26	7,517	Significant	5
City Of Hudson Upper Lake Dam	·	4	17	232	Significant	1
Rushcreek Structure No. Iv-E	1979	138	29	5,209	Significant	3
City Of Hudson Lower Lake Dam	·	4	14	448	Significant	1
Youngstown Upground Reservoir	1929	96	29	·	High	·
Grogg Lake Dam	2001	26	17	1,600	Low	1
Blanchester Ug Res No. 6 Dam	2003	191	25	8	High	0
Trumbull Creek Wetland Berm No. 7	2002	82	12	894	Low	0
Winchester Wwt Lagoon No. 2	2004	45	25	·	Significant	·
Winchester Wwt Lagoon No. 3	2004	0	21	·	Significant	·
Alum Creek Upground Reservoir No. 2	2004	0	36	·	High	·
Green Lake Dam	2002	254	25	270	Low	0
Greene Town Center Dam	2005	21	20	416	Significant	0
Somoco Wwt Lagoon	2000	135	19	20	Significant	0
Giel Lake Dam	·	6	15	838	Significant	2
Crum Lake Dam	2006	55	21	·	Low	0
Attica Upground Reservoir #2	2006	120	23	·	High	0
Clinton County Wwt Lagoon	2007	104	10	2	Significant	0
Defiance Upground Reservoir	2007	0	24	·	High	0
Van Wert Upground Reservoir No. 3	2007	1,937	26	·	High	0
Buckeye Water District Reservoir	2008	25	56	·	High	0
Marathon Brine Pond Dam	2008	49	23	·	High	·
Delphos Reservoir Dam	2007	1,348	29	·	High	0
Genon Energy North Pond Dam	1955	0	20	·	Significant	·
Genon Energy South Pond Dam	·	0	14	·	Significant	·
Marysville Upground Reservoir	2009	4,173	48	·	High	0
Cardinal Plant Ash Pond Dam	1974	0	20	·	Significant	0
Sammis Station North Bottom Ash Pond Dam	·	0	21	·	Significant	0
Timber Lake Liberty Dam	·	19	34	292	High	2
Williams Reservoir	2012	16,534	53	·	High	1
Stark Lime Sludge Lagoon	·	83	34	·	Significant	0
Woodsfield Reservoir Dam No. 3	1992	398	56	70	High	0
Parsons Avenue Sludge Lagoons	1978	560	28	·	Significant	0
South Central Wwt Lagoon	2011	96	18	5	Significant	0
Jm Stuart Station Ash Pond No. 7	·	0	39	·	Significant	0
Jm Stuart Station Ash Pond No. 5	·	0	41	·	Significant	0
Jm Stuart Station Ash Pond No. 3a	1978	1,161	26	·	Significant	0
Jm Stuart Station Ash Pond No. 6	·	0	30	·	Significant	0
Zimber Ditch Detention Basin B	2007	0	17	895	High	1
Hamilton Small Diversion	1920	1,300	8	16,000	Low	3,630
Horseshoe Diversion Dam	1920	1,300	8	·	Low	·
Hap Cremean Lagoon #1	2011	179	14	·	Significant	0
Upper Hocking Ws Site R-33	1960	10	29	1,260	Low	0
Hunters Run Structure No. R-65	1961	5	28	340	Low	0
Corning Lake Dam	1956	58	12	85	Low	0
John R. Doutt Upground Reservoir	2014	27,794	46	82	High	1
Dayton Airport Detention Pond Dam	·	0	13	·	Low	·
Auglaize River Wwt Lagoon	2011	0	12	·	Significant	0
Fremont Upground Reservoir	2012	2,240	34	16,607	High	0
Hunters Run Structure No. R-13	1956	7	30	470	Low	0
Parker Lakes Lower Dam	·	28	15	·	Low	·
Lake Damascus Dam	2010	210	31	111	High	0
Fischer Lower Lake Dam	·	46	14	637	Low	6
Attica Wastewater Treatment Lagoon	2016	0	16	·	Significant	0
Montezuma Club Island Wwt Lagoon Cell 4	2012	0	17	·	Significant	0
Traska Fwi Dam	·	45	27	·	Low	·
West Branch Channel Dam	·	116	16	·	Low	101
Parker Pond Dam	2014	0	26	·	Low	·
Lewis Lake Dam	1990	60	40	·	Low	·
Buckeye Water District Reservoir Ii	2020	55	38	·	High	0
Camp Spelman Lake Dam	·	69	23	·	High	0
Howard Farm Dam	2018	2,225	18	86	High	1
Parker Lakes Upper Dam	1994	8	15	267	Significant	1
Hap Cremean Lowhead Dam	1953	187	14	·	Significant	196
Vesuvius Dam	·	1,300	41	7,400	High	11
Cross Valley Water Imp.	·	·	20	·	High	·
Upper Supply Dam	·	·	10	·	Low	·
No. 2 Slurry Pond	·	·	300	·	High	·
Raw Water Impoundment	·	·	65	·	High	·
Slurry #1	·	·	190	·	High	·
Refuse Imp. (Sands Hill Reservoir)	·	·	100	·	High	·

Reservoir FAQ

About Ohio dams & reservoirs

Where does the Ohio dam data come from?

The U.S. Army Corps of Engineers National Inventory of Dams (NID) plus state water-resource agencies. Snoflo joins these public records with live USGS streamgauge readings downstream where available. The NID is the canonical federal dam registry.

What does Hazard Potential mean?

USACE classifies every dam by what would happen if it failed: Low (no loss of life expected, minimal economic damage), Significant (no loss of life but economic, environmental, or lifeline damage), High (loss of life expected). It's a downstream-consequence rating, not a likelihood of failure.

What is Normal Storage in acre-feet?

The volume of water the reservoir holds at its normal operating level, measured in acre-feet. One acre-foot is about 325,851 gallons or 1,233 cubic meters — the amount needed to cover one acre to a depth of one foot.

Why are some Ohio dams missing storage or height data?

USACE NID records can have gaps for small or older dams that pre-date federal reporting requirements. Snoflo surfaces whatever the canonical record contains. If a dam you care about has incomplete data, contact the operating agency or USACE for updates.

Can I see live water levels?

Yes — tap any dam name to open its detail page, which pulls live storage data from USGS streamgauges or operating-agency feeds where available. Historical levels and seasonal averages are also shown.

Why does Ohio have so many dams?

The U.S. has over 90,000 dams — most built between 1930 and 1980 during the federal water-development era. Ohio's count reflects a combination of agricultural irrigation needs, flood control, hydropower, and recreation. The "Built by decade" chart above shows the timeline.