Reservoir report

Connecticut reservoirs & dams

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

Dams in Connecticut

846

Total storage

2,196,513ac·ft

High-hazard dams

283

Updated

May 17

Open the Connecticut reservoir layer on the map Every dam and reservoir filtered to Connecticut on the interactive map.

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May

2026

Reservoir report

Connecticut has numerous reservoirs and dams used for water supply, flood control, and recreational purposes. Some of the major reservoirs in the state include the East Branch Reservoir, West Branch Reservoir, and Saugatuck Reservoir. These reservoirs are fed by streams and rivers such as the East Branch of the Saugatuck River and the West Branch of the Saugatuck River. The water supply is heavily influenced by seasonal snowpack, particularly in the mountains of northern Connecticut.

Connecticut generally experiences a humid continental climate with cold winters and warm summers. There have been instances of record drought conditions in the state, particularly during the summer months. Overall, the hydrology of the area is complex and dependent on a variety of factors including precipitation, snowpack, and land use.

Connecticut at a glance

Storage, hazard, and history

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

Hazard classification

High283
Significant497
Low59
Unknown7

USACE downstream-consequence rating, not failure likelihood.

Notable dams

Tallest Colebrook River Dam 223 ft
Oldest Mill Pond Dam 1721
Total storage All Connecticut dams 2,196,513 ac·ft

Built by decade

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

Full inventory

Connecticut dams & reservoirs

Every documented dam in Connecticut. 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
Hartford Reservoir #1 Dam	1868	421	46	6,130	High	5
Hartford Reservoir #3 Dam	1875	338	41	946	High	1
Hartford Reservoir #3 Dike	·	0	·	·	High	·
Hartford Reservoir #2 Dam	1869	870	32	1,540	High	1
Hartford Reservoir #5 Dam	1884	156	24	2,330	High	1
Hartford Reservoir #5 Dike	·	156	9	·	High	1
Hartford Reservoir #6 East Dam	1895	3,500	42	2,560	High	2
Hartford Reservoir #6 South Dam & Dike	1895	0	14	·	High	·
Jacklin Lake Dam	·	143	12	·	Significant	0
Jacklin Lake Willis Street Dike	·	143	12	·	Significant	0
Wilson Brook Detention Dam	1981	0	20	1,956	Significant	1
Bristol Reservoir #1 Dam	1885	348	25	200	High	0
Laurel Lake Dam	·	420	13	·	Undetermined	73
Lydall Pond #1 Dam	1898	64	12	1,200	Significant	4
Globe Hollow Reservoir Dam	1906	545	40	2,120	Significant	2
Union Pond Dam	1901	515	33	8,400	High	54
Porter Reservoir Dam	1902	45	32	970	Significant	·
Howard Reservoir Dam	1902	329	44	967	High	1
Samp Mortar Reservoir Dam	1901	333	29	5,270	High	24
Hemlock Reservoir Dam	1914	0	75	4,670	High	5
Buckley Pond Dam (Also #15807)	1885	55	15	51	Significant	9
Easton Reservoir Dam	1926	36,000	123	4,400	High	13
Aspetuck Reservoir Dam	1913	202	11	·	Significant	18
Stevenson	1919	23,520	103	213,000	High	1,542
Quillinan Reservoir Dam	1880	0	19	·	High	3
Fountain Lake Dam	1888	63	15	138	High	0
Lake Housatonic	1870	4,400	25	160,000	High	1,574
Derby Dike	1870	4,400	10	0	Low	1,574
Derby Canal Weir	1870	4,400	12	500	Low	1,574
Shelton Canal Dike	1870	4,400	25	448	Low	1,574
Lower Ansonia Reservoir Dam	1887	71	18	210	High	1
Picketts Pond Dam	1963	29	3	·	Significant	2
Upper Ansonia Reservoir Dam	1887	196	21	240	High	0
Upper Ansonia Reservoir East Dike	·	0	12	·	High	·
Mad River Dam Homestead Avenue Dam	1900	56	31	4,860	High	17
East Brass Mill Dam	1916	120	25	4,000	Undetermined	24
East Mountain Reservoir Dam	1880	420	35	·	High	1
Pistapaug Reservoir Dam	1941	3,560	8	400	High	1
North Farms Reservoir Dam	1926	218	5	259	Significant	1
Mackenzie Reservoir Dam	1944	1,100	29	4,300	High	9
Ulbrich Reservoir Dam	1966	2,980	17	2,160	High	1
Rainbow Reservoir Dam	1925	4,800	43	101,000	High	588
Mianus Filter Plant Dam	1875	101	31	680	High	30
Putnam Reservoir Dam	1910	1,775	35	1,560	High	2
Pemberwick Dam	1867	25	44	1,100	High	26
American Felt Dam	1867	36	37	1,335	High	25
Converse Lake Dam	1900	920	30	520	High	1
Mianus River Dam	1920	525	20	10,158	Significant	31
Rockwood Lake Dam	1893	1,534	36	·	High	1
Rockwood Lake North Street Dike	1893	0	12	·	High	·
American Can Company Dam	1970	18	53	·	High	0
North Stamford Reservoir Dam	1908	1,571	40	7,350	High	23
Laurel Reservoir Dam	1923	11,000	50	3,900	High	13
Samuel Bargh Reservoir Dam	1955	7,515	75	3,000	High	18
Brush Reservoir Dam	1925	75	23	184	Low	2
Saddle Pond Dam	1920	40	11	·	Significant	0
Streets Pond Dam	·	0	8	·	Significant	1
New Canaan Reservoir Dam	1898	320	44	240	High	1
Siscowit Reservoir Dam	1865	270	6	·	Significant	3
Grupes Reservoir Dam	1871	171	24	2,900	High	10
John D. Milne Lake Dam	1947	1,000	70	8,000	High	10
Chasmars Pond Dam	1900	26	11	467	Significant	12
Nash Pond Dam	1879	58	22	250	High	3
Lee's Pond Dam	1903	97	18	8,800	Significant	81
Upper Kohanza Lake Dam	1866	31	30	525	Significant	0
Margerie Lake Reservoir South Dam	1933	4,270	29	1,600	High	1
Margerie Lake Reservoir North Dike	·	0	17	·	High	·
Lower Kohanza Lake Dam	1860	55	25	296	High	1
East Lake Reservoir Dam	1855	993	47	1,400	High	1
Padanaram Reservoir Dam	1883	81	29	206	High	4
Mercers Pond Dam	1870	34	20	1,060	High	4
Mountain Pond Dam	1901	87	15	69	Significant	0
West Lake Reservoir Dam	1906	2,440	42	2,715	High	3
Tarrywile Lake Dam	1900	55	12	235	Significant	320
Farringtons Pond Dam	1900	93	20	253	Significant	0
Island Brook Lagoon Dam	·	105	19	780	High	2
Chestnut Ridge Dam	1910	193	29	270	High	0
Bunnells Pond Dam	1906	800	33	12,000	High	24
Eureka Lake Dam	1878	210	10	29	High	0
Lake Forest Dam	1899	852	28	560	High	1
Success Lake Dam	1875	119	15	760	Significant	2
Pinewood Lake Dam	1890	630	28	6,300	High	5
Canoe Brook Lake Dam	1870	580	33	3,150	High	2
Canoe Brook Lake East Dike	·	0	9	·	High	·
Canoe Brook Lake West Dike	1870	580	16	·	High	2
Beaver Dam Lake Dam	1901	898	47	2,300	High	2
Glasgo Pond Dam	1860	2,208	26	466	High	38
Wepawaug Reservoir Dam	1911	117	18	1,800	Significant	8
Great Hill Reservior Dam	1909	360	41	810	High	3
Peat Swamp Reservoir Dam	1925	1,660	41	600	High	2
Kinneytown	1913	881	21	59,000	Low	309
Hoadley Pond Dam	1873	70	19	2,300	Significant	15
Trap Falls Reservoir Dam	1905	7,100	48	4,300	High	1
Means Brook Reservoir Dam	1917	268	47	4,000	High	8
Shelton Reservoir #2 Dam	1900	54	16	535	High	1
Shelton Reservoir #3 Dam	1915	108	18	108	Significant	0
Dividend Pond-Upper Dam	1870	87	24	600	Significant	2
Ruben Hart Reservoir Dam	1933	2,300	50	7,000	High	5
Crystal Lake Dam	1878	30	36	1,935	Significant	4
Stillwater Pond Dam	·	1,100	34	·	High	24
Burr Pond Dam	1935	428	17	1,415	High	1
Ouleout Lake Dam	1900	56	9	193	Significant	60
Old Brass Mill Pond Dam	·	72	22	·	Significant	33
Whist Pond Dam	1900	400	8	100	Significant	0
Rugg Brook Reservoir Dam	1890	726	36	1,121	Significant	2
Rug Brook Reservoir Southeast Dike	·	0	18	·	Significant	·
Rugg Brook Reservoir Northeast Dike	·	0	26	·	Significant	·
Crystal Lake Reservoir Dam	1892	1,680	13	410	Significant	1
Winchester Lake Dam	·	2,280	23	·	Significant	2
Highland Lake Dam	1860	8,700	14	7,400	High	7
Winchester Club Pond Dam	1927	98	9	39	Significant	0
Samuel P. Senior Dam	1941	36,800	130	15,600	High	35
Popps Mountain Dike	1941	36,800	36	·	High	35
Lake Phipps Dam #1	1880	245	29	·	High	0
Lake Phipps Dam #2	1880	245	16	310	High	0
Lake Phipps Dam #3	1920	245	8	·	High	0
Maltby No. 1 Dam	1862	161	26	520	High	1
Maltby #2 Dam	1862	175	35	172	Significant	0
Maltby Lakes West Dam #3	1862	230	29	1,336	Significant	1
Graniss Pond	1900	220	6	·	Significant	0
Lake Saltonstall Dam	1882	4,700	30	·	High	4
Branford Supply Ponds Dam	1911	202	15	450	Significant	4
Wards Mill Pond Dam	1900	55	9	·	Significant	25
Lake Wintergreen Dam	1863	307	31	850	High	2
Lake Whitney Dam	1861	2,720	37	9,700	High	37
Butterworth Lake Dam	1961	33	15	1,635	Significant	2
Lake Winnemaug Dam	1920	407	24	774	High	1
Echo Lake Dam	1958	88	24	·	High	1
Smith Pond Dam	1927	100	10	328	Significant	0
Big Meadow Pond A.K.A. Judd Pond Dam	1860	114	6	323	Significant	1
Pin Shop Pond Dam	1870	32	23	·	High	12
Merriman Pond Dam	1900	170	16	336	High	1
Thurston Pond Dam	1890	29	20	2,400	High	8
Mulberry Reservoir Dam	1897	145	66	1,600	High	0
Bradley Hubbard Reservoir Dam	1891	180	15	223	High	1
Baldwins Pond Dam	1850	25	24	490	Significant	8
Hanover Pond	2006	1,800	25	17,410	High	95
Black Pond Dam	1880	123	26	250	High	1
Beaver Pond Dam	1893	105	12	54	Significant	1
Bishop Fosters Pond Dam	1900	96	13	1,113	Significant	1
Crystal Lake Dam	1850	154	50	180	High	0
Adder Reservoir	1934	306	28	349	High	1
Mount Higby Reservoir Dam	1897	1,177	30	1,400	High	1
Upper Mill Pond Dam	1860	31	12	250	Significant	8
Dooley Pond Dam	1870	160	24	380	High	1
Asylum Reservoir #2 Dam	·	390	35	·	Significant	0
Asylum Reservoir Dam #6	1954	176	28	793	Significant	0
Starr Mill Pond	1875	75	10	5,855	Significant	37
Highland Pond Dam	1875	47	18	170	Significant	2
Asylum Reservoir #5 Dam	1879	0	15	880	Significant	1
Portland Reservoir Dam	1964	375	28	·	High	4
Great Hill Pond Dam	1870	358	14	344	Significant	1
Kelsey Pond Dam	1860	84	10	·	Significant	2
Lake Konomoc Dike	·	0	8	·	High	·
Brandagee Lake Dam	1897	350	15	890	Significant	2
Miller Pond Dam	1873	410	20	1,915	Significant	11
Powers Lake Dam	1870	1,068	25	168	Significant	1
Darrow Pond Dam	1880	315	8	24	Significant	0
Gorton Pond Dam	1860	450	8	930	Significant	7
Dodson Pond Dam	1962	102	22	727	Significant	0
Pataguanset Lake Dam	1942	310	12	550	Significant	4
Eagleville Dam	1860	320	18	·	High	111
Shuttle Meadow Reservoir Dam	1894	700	35	670	High	3
Putnam Park Pond Dam	1900	67	8	99	Significant	1
Mill Pond Dam	1677	42	19	575	Significant	3
Elmville Dam	1900	15	7	3,000	Significant	14
Crystal Pond Dam	1900	63	31	152	Significant	0
Hale Dam	1900	54	18	510	Significant	7
Old Daniels Dam Aka Warsaw Dam	1880	176	18	1,920	Significant	51
Dayville Dike	1925	93	14	0	Low	57
Dayville Emergency Spillway	1925	93	8	2,640	Low	57
Dayville Wasteway	1925	93	14	2,640	Low	57
Lake Albert Dam	1970	240	15	1,407	Significant	0
Rogers Corporation Dam	1900	176	12	·	Significant	377
Acme Pond Dam	1846	16	16	245	High	5
Ballouville Dam	1900	54	8	970	Significant	53
Killingly Pond Dam	1900	715	15	30	Significant	2
Killingly Pond Dike	·	0	12	·	Significant	·
Risdon Pond Dam	1890	9	27	220	High	1
Chase Reservoir Dam	1870	240	13	·	Significant	1
Tetreault Pond	1900	81	9	120	Significant	2
Cady Pond Dam	1865	70	13	153	Significant	8
Peck Pond Dam	1930	160	16	2,456	Significant	3
Mechanicsville	1900	330	18	10,000	Low	112
Quaddick Reservoir Dam	1900	840	23	4,950	High	99
Quaddick Reservoir Dike	1900	4,280	19	2,500	High	24
Wakefield Pond Dam	1991	0	6	·	Significant	·
Belden Dam	1900	338	12	60	Significant	2
Mavis Pond #1 Dam	1870	65	13	32	Significant	3
Whitmans Pond Dam & Dike	1900	70	8	232	Significant	3
Reams Pond Dam	1900	176	11	109	Significant	2
Scotland	1909	1,300	37	60,000	Low	429
Potash Pond Dam	1880	75	21	840	Significant	3
Big Pond Dam	1870	165	20	510	High	2
Frog Pond Dam	1870	50	10	287	Significant	2
Lake Marie Dam	1880	73	9	31	Significant	2
Willimantic Reservoir Dam	1885	750	29	38,125	High	166
Hansens Pond Dam	1935	168	8	·	Significant	1
Mclaughlin Pond Dam	1860	120	11	136	Significant	2
Taftville Reservoir #2 Dam	1910	110	30	10	Significant	0
Spaulding Pond Dam	1965	138	28	1,142	High	0
Spaulding Pond Dike	1965	0	16	·	High	·
Skating Pond Dam & Dike	1968	4	16	2,850	High	0
Taftville Hydro Dam	1867	1,712	30	26,075	High	511
Fairview Reservoir Dam And Dikes	1868	1,176	30	648	High	1
Greenville	1888	373	15	66,935	Low	1,264
Taftville Reservoir #1 Dam	1880	0	30	·	Significant	0
Bog Meadow Reservoir Dam	1893	525	17	819	Significant	1
Shenipsit Lake Dam	1903	8,700	27	2,600	High	17
Dobsonville Pond Dam	1900	90	26	342	Significant	11
Risley Reservoir Dam	1853	226	28	540	Significant	1
South Norwalk Reservoir Dam	1899	1,950	36	2,700	High	3
South Norwalk Reservoir Dike	1899	1,950	20	·	High	2
Thayers Pond Dam	1920	50	10	27	Significant	0
Popes Pond Dam	1965	980	24	7,600	High	2
Rock Lake Dam	1875	310	37	415	Significant	1
Factory Pond Dam	1874	100	24	2,500	High	12
Huntington Pond Dam	1880	360	11	·	Significant	0
Steichens Pond Dam	1880	104	10	41	Significant	0
Mamanasco Lake Dam	1870	435	6	54	Significant	1
Lake Windwing Dam	1900	98	14	177	Significant	1
Wataba Lake Dam	1900	231	10	350	Significant	2
Lake Naraneka Dam	1937	490	18	230	Significant	0
Rocky River Main Dam	1929	158,200	107	2,280	High	40
Rocky River Canal Dike	1902	158,200	72	2,280	High	40
North Lanesville Dike	1929	158,200	7	2,280	High	40
Middle Lanesville Dike	1929	158,200	45	2,280	High	40
South Lanesville Dike	1929	158,200	20	2,280	High	40
Danbury Dike No. 1	1929	158,200	47	2,280	High	40
Danbury Dike No. 2	1989	158,200	7	2,280	High	40
New Milford Reservoir #4 Dam	1900	84	17	510	Significant	1
New Milford Reservoir #3 Dam	1900	67	21	454	Significant	1
Ella Fohs Camp Dam	1900	65	13	92	Significant	0
Bleachery Dam	1920	800	15	21,000	Low	1,120
Trails Pond Dam - Spillway Removed 2012	1880	53	12	·	Undetermined	1
Poquonnock Reservoir Dam	1901	921	18	1,160	High	16
Shepaug	1955	66,700	138	162,000	High	1,391
Ledyard Reservoir Dam	1954	1,458	25	·	Significant	7
Ledyard Reservoir South Dam	·	0	10	·	Significant	·
Bogue Brook Reservoir Dam	1920	684	21	513	Significant	2
Barnes Reservoir Dam	1902	522	22	1,264	Significant	3
Barnes Reservoir Dike	1902	522	10	1,264	Significant	3
Trading Cove Pond	1900	20	32	2,300	Significant	13
Oxoboxo Lake Dam	1810	0	26	400	High	3
Wheeler Pond Dam	1810	1,000	20	934	Significant	9
Gay Cemetery Pond Dam	1920	67	19	100	Significant	12
Schofield Pond Dam	1920	71	10	210	Significant	6
Rockland Pond Dam	1900	92	10	870	Significant	10
Stony Brook Reservoir Dam	1912	1,550	40	1,250	Significant	3
Buckingham Reservoir Dam	1925	110	30	2,040	Significant	5
Addison Pond Dam	1820	62	18	600	Significant	7
Lower Hart Ponds Dam	1920	585	18	1,200	High	2
Upper Hart Pond Dam	1920	168	13	375	High	6
Hallmere Reservoir Dam	1897	585	45	1,470	High	1
Kensington Dam	1901	180	25	1,560	High	10
Kenmere Reservoir Dam	1898	594	38	734	High	3
Merimere Reservoir Dam	1870	1,220	33	475	Significant	1
Merimere Reservoir Dike	·	0	27	·	High	·
Paper Goods Pond Dam	1920	150	30	1,190	Significant	9
Silver Lake Dam	1920	1,480	15	180	High	2
Swede Pond Dam	·	8	18	·	Significant	1
Poheganut Reservoir Dam	1952	687	16	·	Significant	1
Mono Pond Dam	1990	0	13	·	Significant	·
Plainville Reservoir Aka Crescent Lake Dam	1884	429	17	109	High	0
Wasel Reservoir Dam	1966	2,700	80	80	High	0
Wasel Reservoir Dike	1966	3,600	50	·	High	1
Spring Lake Dam	·	90	13	·	High	1
Batterson Park Pond Dam	1878	2,000	25	1,540	High	5
Batterson Park Pond Dike	·	0	6	·	High	·
Farmington Reservoir Dam	1895	24	8	525	High	0
Lake Garda Dam	1930	173	17	463	Significant	2
Stub Pond Dam	1918	23	7	53	Significant	6
Upper Unionville Reservoir Dam	1909	17	23	100	Significant	1
Gale Pond Dam	1930	50	10	60	Significant	0
Barber Pond Dam	1955	66	11	·	High	2
Windsorville Pond Dam	1880	156	17	·	Significant	5
Broad Brook Mill Pond Dam	1880	130	21	2,500	Significant	15
Hurds Lake Dam	1934	15	15	175	Significant	0
Somersville Pond Dam	1890	350	22	3,165	Significant	57
Lake Basile Dam	1940	74	14	491	Significant	1
Tuller Reservoir Dam	1900	134	46	415	Significant	1
Great Pond Dam	1930	75	9	27	Low	0
Crescent Lake Dam	1900	210	13	725	Significant	2
Shaker Pond Dam	1880	0	12	140	Significant	1
Freshwater Pond Dam	1900	54	20	2,000	High	11
Schwartz Pond Dam	1920	75	16	3,300	Significant	41
Whites Pond Dam	1926	120	20	10	Significant	3
Middle Pond Dam And Dike	1900	30	10	50	Significant	2
Wilton Pond Dam	1810	42	15	356	Significant	1
Old Marsh Pond Dam	1913	1,808	30	4,000	High	2
Plymouth Reservoir Dam	1881	290	20	408	High	1
Brophy Pond Dam	1900	54	15	10	Significant	1
Fall Mountain Lake Dam	1900	116	12	353	Significant	1
Zeiner Pond	1911	98	20	121	Significant	0
Lake Plymouth	1900	128	7	133	Significant	0
Tomlinson Lake Dam	1950	59	10	153	Significant	0
Terryville Reservoir #3 Dam	1920	51	20	160	Significant	0
Lower Scovill Reservoir Dam	1917	31	15	2,520	High	9
Scovill Reservoir Dam	1917	1,300	32	4,454	High	9
Scoville Reservoir Dike	·	1,300	15	·	High	9
Cedar Lake Dam	1869	1,200	17	265	Significant	17
Southington Reservoir #2 Dam	1900	0	38	574	Significant	1
Hitchcock Lake Dam	1868	836	13	177	High	0
Hitchcock Lake College Place Dike	1868	0	5	·	High	0
Hitchcock Lake Central Ave Dam	1868	0	8	·	High	·
Chestnut Hill Reservoir Dam	1919	1,500	37	1,050	High	2
Bristol Fish & Game Club Pond	1961	130	20	183	Significant	0
Moss Farm Aka Lake Percivel Dam	1920	50	11	888	Significant	9
Broad Brook Reservoir Dam	1913	3,870	40	1,450	High	55
Mixville Pond Dam	1870	87	13	375	High	3
Cheshire Reservoir Dam	1908	30	21	1,086	High	2
Waterbury Reservoir No. 2 Dam	1880	206	22	410	High	0
Moody Reservoir Dam	1900	3,300	56	1,878	High	2
Lake Chamberlain Dam	1890	2,750	88	8,100	High	4
Long Hill Reservoir Dam	1914	2,148	80	2,130	High	2
Lake Bethany Dam	1892	1,851	61	1,645	High	4
Carrington Pond Dam	1920	56	8	45	Significant	0
Sandy Hook	1905	60	35	2,364	Low	25
Curtis Pond Dam	1856	32	15	620	Significant	2
Hattertown Pond Dam	1840	70	11	121	Significant	1
Murphy Pond Dam	1920	54	11	75	Significant	1
Shepard's Dam	1956	86	20	300	Low	1
Blast & Cast Pond Dam	1953	75	20	·	Significant	1
Lake Glen Dam	1907	710	62	4,100	High	6
Lake Watrous Dam	1915	2,230	51	2,800	High	7
Lake Dawson Dam	1890	1,540	50	9,900	High	13
Timber Lake Dam	1957	60	14	591	Significant	3
Lake Mauweehoo Dam	1906	193	22	89	Significant	1
Spring Lake Dam	1900	80	7	13	Significant	0
Seymour Reservoir #3 Dam	1910	206	42	280	Significant	1
Seymour Reservoir #2 Dam	1948	520	31	500	Significant	1
Seymour Reservoir #4 Dam	1951	558	28	260	Significant	1
Towantic Pond Dam	1870	285	18	·	Significant	0
Long Meadow Pond Dam	·	0	12	·	Significant	3
Swan Lake Dam	1920	216	28	245	High	1
Quassapaug Lake Dam	1900	2,601	24	97	Significant	2
Lake Elise Dam	1900	90	12	90	Significant	0
Orcutts Pond Dam	1850	122	8	710	Significant	12
Staffordville Reservoir Dam	1850	1,800	30	3,330	High	8
Glenville Pond Dam	1842	56	19	1,200	Significant	16
Warren Pond Dam	1852	105	22	1,900	High	16
Riverside Pond Dam	1880	120	21	4,345	High	13
Lake Mark Dam	1957	75	21	463	Significant	1
Rhode Island Pond Dam	1880	270	20	7,860	Significant	1
Hydeville Pond Dam	1900	52	14	733	Significant	1
Crystal Lake Dam	1900	1,450	11	350	Significant	3
Dennis Pond Dam	1880	50	14	82	Significant	0
Stateline Pond Dam	1900	280	7	307	Significant	6
Stafford Reservoir #2 Dam	1966	360	28	8,925	Significant	7
Deep River Reservoir Dam	1926	4,520	62	18,860	High	8
Day Pond(Colchester)	1936	55	10	·	Low	1
Babcock Pond Dam #1	1880	587	8	30	Significant	3
Lincoln Lake	1900	59	6	87	Significant	4
Moodus Reservoir Dam	1882	2,940	18	2,182	Significant	11
Forest Lake Dam	1930	57	14	3	Significant	0
Lake Hayward Dam	1877	645	10	53	Significant	2
Johnson Mill Pond Dam	1880	143	25	2,544	Significant	16
Bashan Lake Dam	1939	4,555	24	165	Significant	2
Pickerel Lake Dam	1870	886	25	2,411	Significant	1
Berlin Fish & Game Dam	1972	93	20	245	Significant	0
Peck's Meadow Pond Dam	1880	70	8	100	Significant	2
Seymour Reservoir #1 Dam	1898	49	26	105	Significant	1
Haviland Millpond Dam	1920	76	12	8	Low	0
Bevins Pond Dam	1898	145	11	180	Significant	4
Bigelow Pond Dam	1941	175	21	713	Significant	1
Lake Pocotopaug Dam	1953	1,320	6	403	Significant	4
Bristol Reservoir #4 Dam	1906	807	40	760	Significant	2
Bristol Reservoir #2 Dam	1889	325	33	432	Significant	0
Bristol Reservoir #5 Dam	1932	620	60	1,050	High	1
Lake Harwinton Dam	1930	180	30	·	High	1
Wilson Pond Dam	1948	144	8	107	Significant	1
Bull Pond Dam Dam	1900	95	4	249	Significant	1
Nepaug Dam	1918	29,300	113	7,200	High	32
Nepaug Phelps Dam	1916	29,300	67	·	High	32
Nepaug East Dike	1916	29,300	30	·	High	32
Richards Corner Compensating Dam	1920	11,510	75	·	High	61
Laurel Lake Dam	1965	118	28	410	Significant	0
Fairy Lake Dam	1956	637	20	368	Significant	1
Fairy Lake Dike	1957	440	10	·	Significant	1
Zemko Pond Dam	1968	82	13	1,470	Low	1
Long Meadows Pond Dam	1880	404	8	83	Significant	2
Saville Dam	1940	93,110	135	11,450	High	54
West Hill Pond Dam	1900	2,525	12	60	Significant	1
Whigville Reservoir Dam	1909	200	58	1,565	High	4
Collins Company Lower Dam	·	160	33	33,000	Significant	360
Lake Beseck Dam	1846	1,256	34	2,200	Significant	2
Laurel Brook Reservoir Dam	1866	288	20	445	High	1
Miller Pond Dam	1880	256	10	1,944	Significant	0
Arrigoni Pond Dam	1945	83	21	182	Significant	2
Ymca Camp Farnam Pond Dam	1931	35	26	341	Significant	0
Pages Millpond Dam	1880	53	17	1,228	Significant	12
Lake Gaillard Dam	1929	48,000	100	2,180	High	8
Lake Gaillard East Dike	1929	48,000	22	2,180	High	8
Kelseytown Reservoir Dam	1895	180	12	1,336	Significant	10
Upper Mill Pond Dam	1813	40	8	66	Low	7
Lockwood Lake Dam	1973	60	13	275	Significant	11
Messerschmidt Pond Dam	1890	910	23	770	High	4
Wrights Pond Dam	1890	131	10	1,060	High	5
Deep Hollow Reservoir Dam	1854	200	28	509	Significant	4
Jennings Pond Dam	1870	95	22	515	High	8
Waterhouse Pond Dam	1902	140	4	105	Significant	0
Pattaconk Reservoir Dam	1932	772	23	530	High	2
Rimmon Dam Aka Tingue Dam	1900	75	18	7,423	Significant	300
Hammonasset Dam	1956	4,300	63	14,385	High	20
Killingworth Reservoir Dam	1895	1,084	41	·	High	2
Tetrams Pond Dam	1923	113	15	339	Significant	3
Schreeder Pond Dam	1900	57	11	567	Significant	7
Deer Lake Dam	1920	202	12	530	Significant	11
Lower Murray Pond Dam	1924	51	12	179	Significant	2
Kroupa Pond Dam	1900	107	10	·	Significant	6
Foster Pond Dam	1900	187	17	1,842	Significant	9
Menunkatuck Reservoir Dam	1929	629	46	1,644	High	3
Maupus Pond Dam	1920	54	18	5	Significant	0
Duffield Dam	1880	80	12	94	Significant	11
Quonnipaug Lake Dam	1850	336	5	53	Significant	3
Upper Guilford Lakes Dam	1929	50	12	630	High	10
Lane Pond Dam	1918	78	16	40	Significant	1
Obed Heights Reservoir Dam	1880	25	15	·	High	1
Chalkers Millpond Dam	1845	55	4	46	Significant	2
Upper Millpond Dam	1820	50	11	413	Significant	9
Rogers Lake Dam	1822	600	7	344	Significant	8
Eddy Pray Reservoir	1900	109	10	10	Significant	1
Upper Pond Dam (Aka Holbrook )	1860	54	12	145	Significant	2
E.A. Whiteford Dam	1964	60	10	398	Significant	1
Mill Pond Dam	1721	464	18	1,223	High	11
Comstock Pond Dam	1874	57	7	186	Low	1
Birch Mill Pond Dam	1850	50	9	42	Significant	0
Bushy Hill Pond Dam	1871	530	33	139	High	1
Pratt Read Dam	1860	88	11	981	Significant	5
Rogers Pond Dam	1850	30	9	500	Significant	6
Tower Hill Lake Dam	1920	285	20	258	Low	1
Higganum Reservoir Dam	1868	106	48	5,710	High	7
Scoville Reservoir Dam	1860	325	21	75	High	0
Hidden Lake Dam	1860	0	13	207	Significant	1
Bronson E. Lockwood Dam	1958	1,291	34	1,241	High	1
Stone Hill Reservoir Dam	1894	1,000	35	·	Significant	1
Ashland Pond Dam	1800	502	25	5,335	High	62
Hopeville Pond Dam	1910	590	18	3,985	Significant	60
Griggs Pond Dam	1870	153	7	25	Significant	2
Chamberlain Pond Dam	1850	384	12	1,400	Significant	3
Witches Wood Lake Dam	1963	268	20	1,775	Significant	6
Quassett Lake Road Dam	1855	478	14	156	Significant	1
Bigelow Pond Dam	1900	148	15	52	Significant	1
Wood Creek Pond Dam	1900	1,387	22	1,050	Significant	2
Doolittle Lake Dam	1920	690	10	52	Significant	1
Benedict Pond Dam	1920	0	8	111	Significant	2
Tobey Pond Dam	1870	239	12	89	Significant	1
North Pond Reservoir Dam	1840	2,300	20	2,100	High	1
North Pond Reservoir Dikes	·	2,300	17	·	High	·
Tyler Lake Dam	1880	637	6	17	Significant	6
Woodridge Lake Dam	1970	6,500	34	6,340	High	9
Robertsville Dam	1887	134	29	15,000	Significant	50
Gaylord Pond Dam	1900	264	12	201	Significant	1
Lake Triangle Camp Jewell Dam	1952	365	10	790	Significant	4
Lemanquais Pnd Dam	1968	117	10	·	Significant	0
Nystrom Pond Dam	1889	130	16	390	Significant	0
Nystrom Pond Dike	1889	130	4	390	Significant	0
Northfield Pond Dam	1855	90	11	·	Significant	2
Lake Floren Dam	·	62	13	·	Significant	0
Morosani Pond #1 Dam	1969	63	18	100	Significant	0
Morosani Pond #2 Dam	1971	138	18	120	Low	0
Ashford Lake Dam	1949	370	23	650	Significant	0
Morey Pond Dam	1870	396	19	412	Significant	1
Happy Acres Dam	1973	410	20	230	Significant	1
Goss Brook Dam	1963	340	39	280	High	2
Lake Chaffee Dam	1880	412	3	220	Significant	1
Lower Blissville Pond Dam	1860	54	14	495	Significant	4
Crystal Pond Dam	1940	1,200	8	73	Significant	4
Baltic Reservoir Dam (West)	1900	305	30	110	Significant	0
Hanover Reservoir Dam	1900	210	27	·	High	33
Paper Mill Pond Dam	1870	766	28	7,750	Significant	37
Versailles Pond Dam	1920	340	14	13,000	Significant	44
Morris Reservoir Dam	·	4,590	88	·	High	8
Pitch Reservoir Dam	1944	3,120	94	15,795	High	2
Jones Pond Dam	1938	72	7	6	Significant	1
Spectacle Swamp Flood Control Dam	1973	420	21	99	High	1
Whitney Flood Control Site #1	1962	1,070	52	4,170	High	3
Ellis Flood Control Site #2	1960	560	38	5,290	High	2
Pomeroy Flood Control Site #3	1960	467	36	4,320	High	2
Bradway Reservoir Site #4 Dam	1961	670	29	1,385	Significant	1
Ellithorpe Flood Control Site #5 Dam	1968	4,070	29	5,400	High	10
Shenipsit Flood Control Site #6 Dam	1961	340	29	60	High	1
Whiting River Flood Control Dam	1968	27	80	14,800	High	14
West Side Flood Control Dam #5	1970	6	20	3,000	High	3
Norfolk Brook Flood Control Dam #6	1966	513	43	1,740	High	1
Wood Creek Flood Control Dam Site #9	1971	1,057	36	7,450	High	4
Wood Creek Flood Control Dike Site #9	1971	0	20	·	High	4
South Flood Control Dam	1964	650	31	3,450	High	1
South Flood Control Dike	·	0	20	·	High	·
Burnt Hill Flood Control Dam	1966	280	38	536	High	0
Talcott Flood Control Dam #2	1964	1,205	19	3,500	High	2
Talcott Flood Control Dam #1	1964	1,205	30	1,760	High	2
Bugbee Flood Control Dam	1969	1,300	20	6,000	High	2
Bloomfield Flood Control Site #3 Dam	1962	1,750	29	2,173	High	3
North Br Park R Site-3a	1970	65	13	2,830	Low	3
Wintonbury Flood Control Site #1 Dam	1963	850	23	3,214	High	1
Cold Spring Flood Control Site #9 Dam	1968	1,100	20	·	High	2
Blue Hills Flood Control Site #2 Dam	1964	700	25	1,554	High	2
Hall Meadow Brook Flood Control Dam	1962	14,620	75	19,200	High	17
East Branch Flood Control Dam	·	6,350	92	·	High	9
Sucker Brook Flood Control Dam	1970	1,995	68	6,400	High	3
Mad River Flood Control Dam	1963	11,300	178	29,600	High	18
Thomaston Dam	1960	0	137	132,200	High	97
West Thompson Dam	1965	1,200	70	63,000	High	174
West Thompson Dam - Reardon Road Dike	1965	1,200	30	63,000	High	174
Mansfield Hollow Dam	1952	2,800	78	106,500	High	159
Mansfield Hollow Dam - Dike A And B	1952	2,800	78	106,500	High	159
Mansfield Hollow Dam - Dike C	1952	2,800	78	106,500	High	159
Mansfield Hollow Dam - Dike D And E	1952	2,800	78	106,500	High	159
Mansfield Hollow Dam - Dike F	1952	2,800	78	106,500	High	159
Hop Brook Dam	1968	120	89	23,000	High	16
Hop Brook Dam - Saddle Dike	1968	·	33	·	High	·
Northfield Brook Dam	1965	80	111	8,800	High	6
Colebrook River Dam	1969	47,500	223	0	High	0
Colebrook River Dam - Saddle Dike	1969	47,500	54	92,000	High	118
Hancock Brook Dam	1966	130	35	16,600	High	12
Hancock Brook Dam - Railroad Dike	1966	130	51	16,600	High	12
Black Rock Dam	1971	305	130	33,500	High	20
Lower Bolton Lake Dam	1940	2,325	20	8,400	Significant	4
Fitchville Pond Dam	1871	759	20	7,117	High	69
Tadma Pond Dam	1966	216	22	2,194	Significant	1
Gardner Lake Dam	1900	3,270	10	235	Significant	6
Quinebaug	1855	283	14	6,934	Low	384
Falls Village	1913	1,135	15	1,855	Significant	634
Camp Freedman Pond Dam	1942	70	2	100	Significant	1
Wangum Lake Dam	1890	543	10	14	Significant	1
Boulder Lake Dam	1940	51	14	66	Significant	0
Pine Meadows Park Pond Pond Dam	1959	170	22	600	Low	1
Columbia Lake Dam	1865	3,370	28	624	High	3
Pinneys Pond Dam	1880	63	10	74	Low	1
Stony Batter Pond Dam	1945	54	12	48	Significant	0
Johnson Pond	1850	55	8	1,845	Undetermined	9
Decew South Coventry Pond Dam	1900	60	11	90	Significant	6
Cellu Company Dam	1950	140	12	1,870	Significant	73
Long Pond	1880	297	6	519	Significant	5
Morgan Pond Dam	1966	5,355	45	3,005	Significant	3
Gager's Pond Dam	1876	259	22	765	Significant	1
Wooley Pond Dam	1800	51	15	·	Significant	11
F W Perry Dam	1972	56	16	190	Significant	1
Wilshire Pond Dam	1920	58	6	32	Significant	1
Topping Road Dam	1920	91	15	561	Significant	1
Spahn Pond Dam	1925	50	12	·	Significant	11
Valley Pond Dam	1900	135	21	·	Significant	0
Wyre - Wynd	1913	2,900	21	36,400	Low	650
Ymca Pond Dam	1920	72	7	·	Low	0
Goodwin	1960	8,532	125	188,000	High	120
Fosters Pond	1920	50	13	37	Low	0
Howells Pond Dam	1880	103	10	1,544	Significant	2
Amston Lake Dam	1910	740	10	180	Significant	1
Holbrook Pond Dam	1920	348	9	890	Significant	2
Jones Street Pond Dam	1973	73	3	10	Significant	0
Bulls Bridge	1902	400	24	14,100	Low	784
Spooner	1902	400	17	10,900	Low	784
Bulls Bridge Canal Spillway	1902	400	19	12,500	Low	784
Bulls Bridge Mountainside Spillway	1902	400	20	150	Significant	784
Bulls Bridge Forebay Dike	1903	400	39	1,250	Significant	784
Five Mile	1855	260	17	3,100	Significant	77
Williams Pond Dam	1865	3,520	26	283	Significant	3
Stiles Pond Dam	1870	179	20	230	Significant	1
Savin Lake Dam	1920	240	18	780	Significant	15
Brewster Pond Dam	1854	331	13	480	Low	4
Brewster Pond Dike	·	·	·	·	Significant	·
Flanders Wldf Center	1974	77	9	3,375	Significant	0
Spencer Pond Dam	1900	170	5	140	Significant	1
Red Cedar Lake Dam	1900	455	9	20	Significant	1
Watersedge Pond Dam	1966	55	13	·	Significant	0
Case Brothers Upper Pond Dam	1870	30	16	812	Significant	2
Case Brothers Lower Pond Dam	1870	7	27	·	Significant	2
Stafford Reservoir #4 Dam	1928	270	8	140	Significant	1
Billings Avery Dam	1968	54	19	1,900	Significant	2
Butternut Hollow Pond Dam	1935	50	14	45	Significant	1
Indian Lake Dam	1900	60	8	97	Significant	6
Wampee Pond Dam	1940	50	12	780	Significant	3
Wyassup Lake Dam	1920	533	15	300	Significant	1
Billings Lake Dam	1900	577	12	80	Significant	1
Lake Of Isles	1920	609	15	98	Significant	1
Spaulding Pond Dam	1900	136	7	138	Significant	11
Blue Lake Dam	1900	243	10	146	Significant	2
Falls Mill Dam Upper	1910	72	10	1,480	Significant	98
Occum	1900	155	14	·	Low	465
Foote Hill Farm Dam	1973	150	18	150	Significant	0
Packers Pond Dam	1880	95	20	1,700	High	18
Brunswick	1891	215	19	3,960	Low	77
Moosup Pond Dam	1970	300	7	·	Significant	1
Abbott's Pond Dam	1960	250	34	35	Significant	1
Enfield Dam	1825	10,744	7	125,226	Low	9,661
Beaupres Pond Dam	1952	50	12	130	High	0
Nightingale Pond Dam	1722	220	6	147	Significant	5
Wells Pond Dam	1920	50	11	25	Significant	2
Hallville Pond Dam	1920	72	13	·	Significant	18
Mitchell Pond Dam	·	52	9	·	Significant	1
Stafford Reservoir #3 Dam	1930	70	11	300	Significant	5
Middle Reservoir Dam	1890	33	35	132	Significant	1
Shingle Mill Pond Dam	1930	55	8	78	Significant	1
South Pond Dam	1850	731	21	590	High	3
Twin Lakes Dam	1900	5,693	20	·	Significant	7
Riga Lake Dam	1900	765	10	403	Significant	2
Fisher Pond Dam	1959	148	11	145	Significant	1
Buckley Dams	1957	138	13	1,550	Low	3
Lake Tavolan Dam	1970	121	13	276	Significant	0
Halls Pond Dam	1900	890	16	550	Significant	1
Halls Pond Dike	1900	890	10	·	Significant	1
Wononpakook Lake Dam	1920	1,700	10	·	Significant	4
Bladens River Dam	1906	13	12	940	Significant	10
Hatch Pond Dam	1900	190	31	780	Significant	2
Roger Lewis Dam	1969	172	15	174	Significant	1
Miles Pond Dam	1920	83	14	67	Low	2
Ford Pond Dam	1880	122	11	40	Significant	1
Peck Pond Dam	·	96	8	·	Low	1
Hilltop Pond Dam	1925	82	11	139	Significant	0
Irving Pond Dam	1945	110	23	408	Significant	1
Sterling Pond Dam	1870	50	19	2,940	High	43
Oneco Pond Dam	1900	66	9	1,365	Significant	37
Sylvia's Upper Pond Dam	1870	215	12	134	High	2
Mystic Reservoir Dam	1880	250	34	2,525	High	7
Deans Reservoir Dam	1888	90	15	·	High	5
Wigwam Reservoir Dam	1893	2,946	75	13,132	Significant	17
Wigwam Reservoir South Dam	1893	2,946	32	22,255	Significant	17
Sweetheart Lake Dam	1927	55	16	173	Significant	2
Lake Bonair Dam	1900	60	9	2	Significant	0
Hockanum Reservoir Dam	1900	18	37	1,950	High	17
Aldon Mill Pond Dam	1920	37	25	2,435	Significant	13
Tankerhoosen Lake North Dam	1830	99	16	1,257	Significant	11
Andover Lake Dam	1920	0	18	·	Significant	4
Walkers Reservior Dam	1900	69	10	53	Significant	3
Green Falls Reservoir Dam	1870	727	32	150	Significant	2
Sawmill Pond Dam	1870	40	15	1,120	High	26
Beach Pond Dam	1885	4,100	12	365	Significant	5
Yaskot & Ahearn Spillway	1880	54	10	2,104	Significant	99
Simpson's Pond Dam	1880	53	18	985	Undetermined	3
Poole Pond Dam	1974	352	18	140	Significant	0
Park Pond Dam	·	850	20	·	High	1
Black Rock Pond Dam	1945	92	16	180	High	1
Upper Shepaug Dam	1965	14,740	87	18,200	High	10
Mountain Lake Dam	1956	66	8	343	Significant	0
Gritman Pond Dam	1920	263	12	50	Significant	0
Tunnel Dam Hydro Station	1906	1,650	32	33,940	Significant	744
Roderick Wyant Pond Dam	1963	145	12	277	Significant	0
Mashapaug Pond Dam #1 South	1900	5,300	6	200	Significant	5
Mashapaug Pond Dam #2 West	1900	5,300	14	·	Significant	5
Mashapaug Pond Dam #3 North	1900	5,300	9	·	Significant	5
Great Brook Reservoir Dam	1925	283	12	140	Significant	1
Belleview Lake Dam	1899	150	38	95	High	1
Jordan Mill Pond Dam	1900	52	7	341	Low	3
Halls Pond Dam	1920	216	22	273	Significant	4
Parizek Pond Dam #1	1870	61	13	30	Significant	2
Bissonette Pond Dam	1930	200	6	223	Significant	4
Goodhall Dam	1976	88	10	650	Low	9
Corbin Wildlife Marsh Dam	1967	290	13	364	Low	1
Blissville Pond Dam	1930	128	11	378	Low	·
Witch Meadow Pond Dam	1965	57	13	1,197	Low	1
Wildlife Marsh #2 Dam	1974	100	9	203	Significant	1
Farm Brook Flood Control Site #1 Dam	1974	73	11	80	High	0
Mansfield Recreation Pond	1974	67	25	1,372	Significant	1
Rizzo Pond Dam	1964	58	18	712	Significant	1
Lake Nova	1930	53	8	29	Low	0
New Britain Reservoir Dam	1904	650	42	·	High	2
New Britain Reservoir Dike	1904	474	29	·	High	2
Leesville Dam	1900	138	25	10,232	High	111
Pachaug Pond Dam	1888	5,982	17	6,400	High	52
Shepaug Reservoir Dam	1933	2,937	65	18,725	High	38
Woodridge Lake Dam	1900	154	12	·	Significant	2
Podunk Pond Dam	1730	275	15	1,350	Significant	12
Middle Bolton Lake	1940	672	20	6,764	Significant	3
Pine Acres Lake Dam	1880	605	9	853	Significant	2
Schwartz Pond Dam	1964	60	20	615	Significant	1
Manitook Lake U/S Radwillowicz Pond Dam 5603	·	667	8	490	Undetermined	2
Seyer Dam	1900	65	11	109	Significant	1
Collins Company Upper Pond Dam	1837	1,400	32	55,000	Significant	359
Robinson Pond Dam	1966	94	14	50	Significant	1
Wigwam Reservoir South Dam	1893	2,946	32	22,255	Significant	17
Halchek Pond Dam	1972	81	26	925	Significant	2
Henry's Pond #2 Dam	·	55	12	·	Significant	3
Bird Pond Dam	·	0	9	·	Significant	0
Bradley Pond Dam	·	0	9	·	Significant	825
Pattaconk Dam #3	·	6	13	·	Significant	8
Nash Pond Dam	1975	90	11	·	Significant	0
Roman Pond Dam	·	7	12	·	High	4
Artistic Wire Company Pond Dam	·	0	12	·	Significant	5
Williams Pond Dam	1900	10	17	212	High	2
Angus Park Pond Dam	1920	0	16	2,900	Significant	9
Rosers Pond Dam	·	9	12	·	Significant	2
Manitook Lake Dam	·	0	12	·	Significant	2
City Pond Aka Upper Slaters Dam	·	0	·	·	Significant	62
Frye Lake Dam	1930	15	10	55	Significant	1
Poquonock Lake Dam	·	242	10	·	Low	2
Kelsey Pond Dam	·	51	14	·	Low	2
Hihoti Dam	1982	26	9	496	Low	1
Gay City Pond Dam	·	54	10	·	Significant	4
Mansfield Training Dam #1	1960	0	10	·	Significant	0
Mansfield Training Dam #2	1968	0	12	·	Significant	0
Hank Hill Pond Dam	·	0	9	·	Significant	0
Mirror Lake Dam	1949	66	20	315	Significant	0
Little Tracys Pond Dam	·	0	14	·	Significant	1
Red Mill Pond Dam	·	0	18	·	Significant	10
Collins Pond Dam	·	0	10	·	Significant	5
United New Milford Reservoir #2 Dam	·	43	46	·	Low	1
Hoover Pond Dam	1920	50	10	·	Significant	0
Industrial Monument Dam	·	0	14	·	Significant	41
Clark Falls Dam	·	0	6	·	Significant	11
Millard Pond Dam	·	14	17	·	Significant	7
Chestnut Hill Pond Dam	·	0	5	·	Significant	1
Perry Pond Dam	·	0	15	·	Significant	20
Florsheim Pond Dam	1874	0	10	·	Significant	7
Taftville Reservoir #3 Dam	·	0	15	·	Significant	0
Lower Millpond Dam	·	31	14	·	Significant	9
Bristol Reservoir #3 Dam	·	0	14	·	Significant	6
Norwich State Hospital Pond Dam	·	140	19	·	Significant	1
Millers Pond Dam	·	0	13	·	Significant	7
Roberts Pond Dam	·	0	·	·	Significant	1
Johns Pond Dam	·	0	8	487	Significant	1
Panther Pond Dam	·	0	16	·	Significant	2
Holly Pond Dam	·	0	4	·	Significant	3
Pewter Pond Dam	·	0	12	·	Significant	6
Isinglass Reservoir Dam	·	0	24	·	Significant	7
Far Mill River Dam	·	20	19	·	Significant	10
Paper Millpond Dam	·	0	6	·	Significant	10
Gravel Pit Pond Dam	·	93	14	·	Significant	5
Kettletown Brook Pond Dam	·	0	14	·	Significant	1
Pomperaug River Dam	·	0	8	·	Significant	79
Harrington Apartments Pond Dam	·	0	17	·	Significant	11
Pearl Lake Dam	·	0	10	·	Significant	6
Cyril Johnson Mill Dam	·	0	15	·	Significant	16
Bradway Pond Dam	·	120	10	·	Significant	1
Bendels Pond Dam	·	0	18	·	Significant	2
Union Pond Dam	·	0	16	·	Significant	2
Pound Pond Dam	·	0	18	·	Significant	2
Silvia's Lower Pond Dam	·	0	14	·	High	1
Hart Brook Pond Dam	1908	0	23	·	Significant	5
Camp Maria Pratt Dam	1974	18	11	300	Low	1
Allen Reservoir Dam	·	22	15	·	Significant	4
Great Meadow Brook Pd	·	73	10	·	Significant	1
Fuller Pond Dam	·	0	8	·	Significant	·
Riverdance Mill Dam	·	0	14	·	Significant	14
Scarletts Mill Dam	·	0	15	·	Significant	11
Cobbs Mill Pond Dam	1892	10	21	·	Significant	7
Hasen Pond Dam	·	0	12	·	Significant	41
Westport Pond Dam	·	0	8	·	Significant	2
Seeley Pond Dam	·	0	10	·	Significant	1
Camp Delaware Dam	·	0	8	·	Significant	1
Indian Hollow Pond Dam	1900	50	9	361	Low	3
Dickinson (A.K.A. Kenyon) Pond Dam	1949	48	11	345	Significant	12
Johnstone Pond Dam	·	0	12	·	Significant	1
Turkey Hill Reservoir Dam & Dike	·	0	10	·	Significant	1
Farm Brook Flood Control Site #2a Dam	1977	10	29	·	High	3
Farm Brook Pond Site 2b	1977	18	28	·	High	3
Whitford Pond Dam	·	67	7	·	Low	6
Asylum Reservoir #4 Dam	·	500	30	·	Significant	1
May Street South Pond Dam	·	0	15	·	Significant	0
May Street North Pond Dam	·	0	14	·	Significant	0
Stanley Quarter Park Pond Dam	·	0	21	·	Significant	1
Conrad Pond Yale Golf Course Dam	·	0	22	·	High	0
Carp Road Dam	·	0	12	·	Significant	0
Turnpike Pond Dam	1900	18	9	·	Significant	0
Nichols Pond Dam	·	0	10	·	Significant	·
Indian Heaven Pond Dam	·	0	6	·	Significant	0
Serra Pond Dam	1972	10	15	·	Significant	0
Sheppard Pond Aka Masterbone Dam	·	0	9	·	Significant	1
Shadow Lake Dam	1937	69	25	930	Significant	0
Sochrin Pond Dam	·	0	13	·	Significant	0
Silver Lake Dam	·	0	7	·	Significant	·
Clarks Pond Dam	·	0	10	·	Significant	1
Green Pond Dam	1900	112	10	5	Significant	0
Middle Hillhouse Road Pond Dam	·	31	14	·	Significant	0
Southington Reservoir #3 Dam	·	145	26	·	Significant	0
Southington Reservoir #3 Dike	·	0	6	·	High	·
New City Pond Dam	1900	152	15	740	Significant	2
Mcmanus Pond Dam	·	0	10	·	Significant	2
Brewster Pond Dam	·	0	13	·	Significant	0
Goodwin Pond Dam	·	0	21	·	Significant	0
Lake Waramaug Dam	·	1,974	3	·	Significant	14
Lake Wequapauset Dam	·	0	5	·	Significant	0
Sylvan Lake Dam	·	0	4	·	Significant	0
Sessions Meadow Marsh Dam	1956	275	11	325	Low	1
Cold Brook Reservoir Dam	1919	52	13	1,085	Significant	7
Freidman Pond Dam	1957	62	3	378	Significant	0
New Pond Dam	1900	58	13	35	Significant	1
Hatchet Pond Dike (Dam In Mass)	·	112	8	·	Low	0
Shepards Pond Dam	1890	140	38	1,486	Significant	36
Bantam Pond Dam	1970	115	14	1,220	Significant	9
Smith Pond Dam	1900	58	14	165	Significant	2
Lake Bungee Dam	1959	1,350	15	701	Significant	6
Furnace Pond	1870	56	7	248	Significant	1
Tinker Pond Dam	1900	53	10	32	Significant	0
Black Spruce Pond Dam	1960	153	6	630	Significant	1
Ross Management Area Pond Dam	1963	113	4	101	Significant	8
Lisbon Pond Dam	1959	123	11	362	Significant	29
Monce Pond Dam	·	63	8	·	Significant	1
High Hill Pond	1968	60	13	90	Significant	0
Cargill Falls	1925	65	24	·	Significant	289
Transylvania Pond Dam	1893	103	8	·	Low	1
Douglas Pond Dam	·	52	4	·	Significant	1
Wickaboxet Marsh Dam	1962	57	8	10	Significant	0
Hell Hollow Pond Dam	·	53	10	·	Low	5
Wasserman Pond	1963	20	27	783	Low	0
Boggs Pond Dam	1900	139	14	113	Significant	0
Quist Pond Dam	1955	72	12	5	Significant	1
Goose Pond Dam	·	72	11	·	Low	1
Ladner Pond Dam	1965	112	18	368	Significant	0
North Pond Dam	1967	100	14	79	Significant	5
Straitsville Reservoir Dam	1900	25	25	528	Significant	2
Ivy Mountain Dam	·	53	20	·	Significant	1
Lakeville Reservoir #2 Dam	·	120	22	·	Significant	1
Baltic Reservoir Dam (East)	·	250	9	·	Significant	0
Upper Mianus River Dam	1930	72	3	810	Significant	70
West Fork Pond Dam	1940	52	4	110	Significant	2
South Meadows Dike	·	0	43	·	High	10,480
South Meadows Pump Pond Levee	·	0	·	·	High	·
Hartford Levee	1938	0	30	·	High	10,480
Hampton Reservoir Dam	1944	154	8	100	Significant	1
Lantern Hill Pond Dam	·	356	9	710	Significant	2
Frost Road Pond Dam	·	0	6	·	Significant	·
Folly Brook Dike	·	0	10	·	High	·
East Hartford Levee	1939	0	28	·	High	1
West Branch Naugatuck River Levee	1959	0	12	·	High	·
New Park Avenue Flood Prev. Levee	·	0	14	·	High	20
New London Levee	·	0	·	·	High	·
North Meadows Dike	·	0	24	·	High	10,480
North Meadows Pumping Pond - Levee	1956	0	·	·	High	·
Meadow Ridge Detention Dam	·	0	11	·	High	·
Meadow Ridge Fire Irrigation Pond Dam	·	0	8	·	Significant	·
Exeter Energy Storage Basin Dam	2003	6	7	·	Significant	0
Avery Flood Control Site #1 Dam	1992	0	20	·	High	·
Avery Flood Control Site #2 Dam	1993	0	23	95	High	0
Great Swamp Fc Aka Norwalk River #2 Dam	1979	0	12	·	High	3
Fritz Deraad Pond Dam	1982	16	11	77	Undetermined	1
Camp Maria Pratt Dam	1974	18	11	300	Low	1
Blue Hills Flood Control Site #2 Dike	·	0	8	·	High	·
Lost Pond Dam	·	0	13	·	Significant	·
Beachdale Pond Dam	·	0	9	·	Significant	28
Bishop Swamp Dam	·	0	9	·	Significant	2
Ridge Lower Detention Dam	·	0	9	·	Significant	0
Southington Reservoir #1 Dam	·	0	18	·	Significant	·
Larsen's Pond Dam	·	0	6	·	Significant	·
Pierce's Detention Dam	·	0	8	·	Significant	0
Green Acre Lane Pond Dam	·	2	4	·	Significant	·
Parks Pond Dam #2	·	0	11	·	Significant	0
Crossing At Lisbon Detention Dam	2008	0	16	·	Significant	·
Middle Reservoir Dam	·	0	7	·	Significant	5
Cheshire Stp Ring Levee	·	0	11	·	Significant	69
Hatchery Pond Dam	·	0	19	·	Significant	0
Turners Pond Dam	·	0	8	1,390	Significant	3
Page Park Pond Dam	·	0	·	·	Significant	·
Derby Housatonic Levee	·	0	·	·	High	·
Ansonia Levee	·	0	·	·	High	·
Great Pond Dam	·	200	20	·	High	0

Reservoir FAQ

About Connecticut dams & reservoirs

Where does the Connecticut 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 Connecticut 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 Connecticut have so many dams?

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