Michigan streamflow
Live discharge, gauge height, water temperature, and percent-of-normal readings from every USGS streamgauge in Michigan. Built for paddlers, anglers, water managers, and flood researchers.
Streamflow levels across Michigan are currently 97% of normal, with the St. Joseph River At Niles reporting the highest discharge in the state at 2,730 cfs and a gauge stage of 5.53 ft.
Meanwhile, the Sturgeon River Near Alston is seeing a spike today — up 21% since yesterday and currently running near peak.
Tap any gauge below for the full hydrograph, paired weather forecast, and historical context. Use the rivers panel to jump into Michigan's named rivers.
Active weather warnings for Michigan
Multiple Beach Hazards Statements are currently in effect across Michigan's coastal regions through July 22-23, posing significant dangers to swimmers and beachgoers statewide. Life-threatening conditions including waves of 3-8 feet and dangerous rip currents are expected along Lake Michigan shores in Berrien, Van Buren, Allegan, Muskegon, Ottawa, and Oceana counties, as well as northern Lake Huron areas including Cheboygan, Alpena, Presque Isle, Emmet, and Huron counties. Lake Superior beaches in Alger County face particularly hazardous conditions with strong currents capable of causing fatalities, especially near Au Train, Grand Marais Harbor, and Pictured Rocks. Residents and visitors in affected areas including Kalamazoo, Grand Rapids, Traverse City, and the Upper Peninsula should avoid water activities and stay clear of piers and breakwalls through Wednesday evening due to risks of being pulled into deeper water or swept away by waves.
State-wide streamflow overview
The Michigan flow picture in four data points -- where the state sits versus historical norms, what's flowing hardest, and what's spiking fastest.
Percent of normal
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Gauge stage 5.53 ft
Biggest 24h spike
Now 201 cfs
Network coverage
USGS gauges feeding 0 named rivers in Michigan.
Michigan USGS streamgauges
Every USGS gauge Snoflo tracks in Michigan. Sortable, quickly filterable. Numeric columns heat-mapped from light to deep. Tap any gauge for its full hydrograph and forecast.
| Streamgage | Streamflow | Gage height | Water temp | Air temp | Elevation | Watershed |
|---|---|---|---|---|---|---|
|
St. Joseph River At Niles, Mi
12 hours ago · USGS 04101500 |
2,720 cfs | 5.52 ft | 78°F | 55°F | 664 ft | St. Joseph |
|
Manistee River Near Wellston, Mi
11 hours ago · USGS 04125550 |
2,230 cfs | 9.10 ft | 70°F | 53°F | 621 ft | Manistee |
|
Menominee River Near Vulcan, Mi
13 hours ago · USGS 04065722 |
2,040 cfs | 6.03 ft | · | 48°F | 807 ft | Menominee |
|
Menominee River Below Pemene Creek Near Pembine, Mi
14 hours ago · USGS 04066003 |
1,920 cfs | 7.71 ft | · | 48°F | 748 ft | Menominee |
|
Menominee River At Koss, Mi
12 hours ago · USGS 04066800 |
1,910 cfs | 10.20 ft | · | 49°F | 663 ft | Menominee |
|
Menominee River At White Rapids Dam Near Banat, Mi
12 hours ago · USGS 04066030 |
1,740 cfs | 6.86 ft | · | 49°F | 689 ft | Menominee |
|
Au Sable River Near Au Sable, Mi
11 hours ago · USGS 04137500 |
1,490 cfs | 8.93 ft | 75°F | 55°F | 587 ft | Au Sable |
|
Manistee River Near Mesick, Mi
11 hours ago · USGS 04124200 |
1,470 cfs | 4.24 ft | 71°F | 52°F | 754 ft | Manistee |
|
Manistee River Near Sherman, Mi
11 hours ago · USGS 04124000 |
1,430 cfs | 13.18 ft | 63°F | 54°F | 820 ft | Manistee |
|
Menominee River Near Florence, Mi
13 hours ago · USGS 04063000 |
1,420 cfs | 4.10 ft | · | 46°F | 1,118 ft | Brule |
|
Grand River At Grand Rapids, Mi
12 hours ago · USGS 04119000 |
1,350 cfs | 1.11 ft | · | 57°F | 587 ft | Lower Grand |
|
St. Joseph River At Mottville, Mi
12 hours ago · USGS 04099000 |
1,250 cfs | 3.10 ft | · | 55°F | 780 ft | St. Joseph |
|
Au Sable River Near Mc Kinley, Mi
11 hours ago · USGS 04136900 |
1,210 cfs | 7.73 ft | 65°F | 49°F | 853 ft | Au Sable |
|
Kalamazoo River At New Richmond, Mi
12 hours ago · USGS 04108660 |
1,180 cfs | 10.38 ft | 78°F | 55°F | 605 ft | Kalamazoo |
|
Au Sable River Near Curtisville, Mi
12 hours ago · USGS 04137005 |
1,180 cfs | 8.37 ft | 72°F | 54°F | 803 ft | Au Sable |
|
Au Sable River At Mio, Mi
11 hours ago · USGS 04136500 |
1,020 cfs | 3.19 ft | 67°F | 48°F | 946 ft | Au Sable |
|
Thunder Bay River At Herron Road Near Bolton, Mi
11 hours ago · USGS 04133501 |
1,010 cfs | 13.50 ft | · | 57°F | 704 ft | Thunder Bay |
|
Muskegon River Near Croton, Mi
11 hours ago · USGS 04121970 |
1,000 cfs | 4.67 ft | 72°F | 55°F | 685 ft | Muskegon |
|
Manistique River Near Manistique, Mi
12 hours ago · USGS 04056500 |
990 cfs | 3.84 ft | · | 48°F | 617 ft | Manistique |
|
Au Sable River Near Red Oak, Mi
11 hours ago · USGS 04136000 |
939 cfs | 3.32 ft | 64°F | 52°F | 1,008 ft | Au Sable |
|
St. Joseph River At Three Rivers, Mi
12 hours ago · USGS 04097500 |
731 cfs | 3.52 ft | · | 54°F | 800 ft | St. Joseph |
|
Michigamme River Near Crystal Falls, Mi
12 hours ago · USGS 04062500 |
668 cfs | 3.82 ft | · | 44°F | 1,305 ft | Michigamme |
|
Tahquamenon River Near Paradise, Mi
12 hours ago · USGS 04045500 |
619 cfs | 4.14 ft | · | 46°F | 729 ft | Tahquamenon |
|
Kalamazoo River At Comstock, Mi
12 hours ago · USGS 04106000 |
616 cfs | 4.07 ft | · | 52°F | 792 ft | Kalamazoo |
|
Ontonagon River Near Rockland, Mi
12 hours ago · USGS 04040000 |
599 cfs | 5.48 ft | 32°F | 48°F | 670 ft | Ontonagon |
|
Tittabawassee River At Midland, Mi
11 hours ago · USGS 04156000 |
584 cfs | 9.36 ft | · | 53°F | 586 ft | Tittabawassee |
|
Muskegon River At Evart, Mi
11 hours ago · USGS 04121500 |
577 cfs | 7.16 ft | · | 51°F | 997 ft | Muskegon |
|
Grand River At Ionia, Mi
11 hours ago · USGS 04116000 |
556 cfs | 7.99 ft | · | 56°F | 620 ft | Lower Grand |
|
Grand River At Portland, Mi
12 hours ago · USGS 04114000 |
545 cfs | 5.44 ft | · | 55°F | 719 ft | Upper Grand |
|
Escanaba River At Cornell, Mi
12 hours ago · USGS 04059000 |
518 cfs | 1.64 ft | 63°F | 48°F | 735 ft | Escanaba |
|
Pere Marquette River At Scottville, Mi
12 hours ago · USGS 04122500 |
506 cfs | 1.14 ft | · | 55°F | 625 ft | Pere Marquette-White |
|
Kalamazoo River Near Battle Creek, Mi
12 hours ago · USGS 04105500 |
402 cfs | 2.93 ft | · | 53°F | 804 ft | Kalamazoo |
|
Grand River At Lansing, Mi
12 hours ago · USGS 04113000 |
368 cfs | 2.50 ft | · | 54°F | 808 ft | Upper Grand |
|
Paw Paw River At Riverside, Mi
12 hours ago · USGS 04102500 |
305 cfs | 5.74 ft | · | 57°F | 610 ft | St. Joseph |
|
Paint River Nr Alpha, Mi
12 hours ago · USGS 04062000 |
292 cfs | 3.38 ft | · | 45°F | 1,271 ft | Brule |
|
Sturgeon River At Wolverine, Mi
11 hours ago · USGS 04127997 |
280 cfs | 3.13 ft | · | 52°F | 778 ft | Cheboygan |
|
White River Near Whitehall, Mi
12 hours ago · USGS 04122200 |
266 cfs | 1.24 ft | · | 58°F | 619 ft | Pere Marquette-White |
|
Kalamazoo River At Marshall, Mi
12 hours ago · USGS 04103500 |
262 cfs | 4.24 ft | · | 55°F | 882 ft | Kalamazoo |
|
Pine River At High School Bridge Nr Hoxeyville, Mi
11 hours ago · USGS 04125460 |
238 cfs | 3.98 ft | 59°F | 53°F | 856 ft | Manistee |
|
Dowagiac River At Sumnerville, Mi
12 hours ago · USGS 04101800 |
230 cfs | 5.42 ft | · | 54°F | 716 ft | St. Joseph |
|
Rifle River Near Sterling, Mi
11 hours ago · USGS 04142000 |
222 cfs | 1.61 ft | 53°F | 49°F | 639 ft | Au Gres-Rifle |
|
Flint River Near Flint, Mi
12 hours ago · USGS 04148500 |
215 cfs | 3.46 ft | · | 55°F | 684 ft | Flint |
|
River Raisin Near Monroe, Mi
12 hours ago · USGS 04176500 |
209 cfs | 2.44 ft | 67°F | 53°F | 618 ft | Raisin |
|
Sturgeon River Near Alston, Mi
11 hours ago · USGS 04041500 |
208 cfs | 4.11 ft | 70°F | 44°F | 735 ft | Sturgeon |
|
Brule River At Us Highway 2 Near Florence, Mi
12 hours ago · USGS 04060993 |
208 cfs | 3.57 ft | · | 46°F | 1,241 ft | Brule |
|
South Branch Au Sable River Near Luzerne, Mi
11 hours ago · USGS 04135700 |
202 cfs | 4.73 ft | 62°F | 52°F | 1,070 ft | Au Sable |
|
Jordan River Near East Jordan, Mi
12 hours ago · USGS 04127800 |
197 cfs | 3.57 ft | · | 55°F | 629 ft | Boardman-Charlevoix |
|
Clinton River At Moravian Drive At Mt. Clemens, Mi
12 hours ago · USGS 04165500 |
190 cfs | 5.63 ft | 74°F | 54°F | 574 ft | Clinton |
|
Huron River Near Hamburg, Mi
12 hours ago · USGS 04172000 |
174 cfs | 4.31 ft | · | 52°F | 852 ft | Huron |
|
Boardman R Above Brown Bridge Road Nr Mayfield, Mi
12 hours ago · USGS 04126970 |
173 cfs | 3.65 ft | · | 56°F | 826 ft | Boardman-Charlevoix |
|
Huron River At Ann Arbor, Mi
11 hours ago · USGS 04174500 |
167 cfs | 12.02 ft | 64°F | 52°F | 758 ft | Huron |
|
Platte River At Honor, Mi
12 hours ago · USGS 04126740 |
162 cfs | 1.41 ft | · | 56°F | 606 ft | Betsie-Platte |
|
Tobacco River At Glidden Road At Beaverton, Mi
12 hours ago · USGS 04152500 |
157 cfs | 2.29 ft | · | 54°F | 715 ft | Tittabawassee |
|
Clam River At Vogel Center, Mi
12 hours ago · USGS 04121300 |
143 cfs | 3.24 ft | · | 53°F | 1,134 ft | Muskegon |
|
Middle Branch Escanaba River Nr Princeton, Mi
11 hours ago · USGS 04058100 |
139 cfs | 1.83 ft | · | 48°F | 1,114 ft | Escanaba |
|
Clinton River Near Fraser, Mi
11 hours ago · USGS 04164000 |
139 cfs | 5.58 ft | · | 55°F | 586 ft | Clinton |
|
Silver River Near L'Anse, Mi
12 hours ago · USGS 04043150 |
135 cfs | 7.21 ft | · | 48°F | 625 ft | Dead-Kelsey |
|
Chippewa River Near Mount Pleasant, Mi
12 hours ago · USGS 04154000 |
135 cfs | 3.08 ft | · | 55°F | 730 ft | Pine |
|
Middle Branch Ontonagon River Near Paulding, Mi
12 hours ago · USGS 04033000 |
122 cfs | 4.24 ft | · | 44°F | 1,500 ft | Ontonagon |
|
Cass River At Frankenmuth, Mi
12 hours ago · USGS 04151500 |
113 cfs | 3.87 ft | · | 55°F | 591 ft | Cass |
|
River Raisin Near Adrian, Mi
12 hours ago · USGS 04176000 |
113 cfs | 3.86 ft | · | 52°F | 699 ft | Raisin |
|
Sturgeon River Near Nahma Junction, Mi
12 hours ago · USGS 04057510 |
108 cfs | 4.22 ft | · | 47°F | 662 ft | Fishdam-Sturgeon |
|
Thornapple River Near Hastings, Mi
12 hours ago · USGS 04117500 |
97 cfs | 2.91 ft | · | 55°F | 803 ft | Thornapple |
|
Pigeon R At Sturgeon Valley Rd Near Vanderbilt, Mi
12 hours ago · USGS 04128990 |
96 cfs | 2.41 ft | · | 51°F | 914 ft | Cheboygan |
|
Rogue River Near Rockford, Mi
12 hours ago · USGS 04118500 |
95 cfs | 3.59 ft | · | 56°F | 665 ft | Lower Grand |
|
Ford River Near Hyde, Mi
12 hours ago · USGS 04059500 |
93 cfs | 1.91 ft | 46°F | 48°F | 707 ft | Cedar-Ford |
|
Clinton River At Sterling Heights, Mi
12 hours ago · USGS 04161820 |
92 cfs | 7.48 ft | 72°F | 54°F | 612 ft | Clinton |
|
Little Muskegon River Near Oak Grove, Mi
11 hours ago · USGS 04121944 |
92 cfs | 3.11 ft | 67°F | 55°F | 756 ft | Muskegon |
|
Sturgeon River Near Sidnaw, Mi
11 hours ago · USGS 04040500 |
84 cfs | 4.06 ft | · | 41°F | 1,228 ft | Sturgeon |
|
Flint River Near Otisville, Mi
11 hours ago · USGS 04147500 |
84 cfs | 2.65 ft | · | 55°F | 728 ft | Flint |
|
St. Joseph River At Burlington, Mi
12 hours ago · USGS 04096405 |
75 cfs | 3.29 ft | · | 56°F | 906 ft | St. Joseph |
|
Shiawassee River At Owosso, Mi
12 hours ago · USGS 04144500 |
73 cfs | 1.88 ft | · | 55°F | 695 ft | Shiawassee |
|
Prairie River Near Nottawa, Mi
12 hours ago · USGS 04097540 |
70 cfs | 3.49 ft | 36°F | 54°F | 872 ft | St. Joseph |
|
Grand River At Jackson, Mi
11 hours ago · USGS 04109000 |
65 cfs | 8.98 ft | · | 55°F | 911 ft | Upper Grand |
|
Iron River At County Hwy-424 At Caspian, Mi
12 hours ago · USGS 04060500 |
63 cfs | 4.09 ft | · | 44°F | 1,446 ft | Brule |
|
Pine River Near Midland, Mi
12 hours ago · USGS 04155500 |
60 cfs | 2.51 ft | · | 53°F | 628 ft | Pine |
|
Looking Glass River Near Eagle, Mi
12 hours ago · USGS 04114498 |
54 cfs | 2.66 ft | · | 52°F | 754 ft | Upper Grand |
|
South Branch Tobacco River Near Beaverton, Mi
12 hours ago · USGS 04152238 |
54 cfs | 4.24 ft | · | 51°F | 727 ft | Tittabawassee |
|
River Rouge At Southfield, Mi
11 hours ago · USGS 04166100 |
53 cfs | 4.54 ft | 71°F | 55°F | 618 ft | Detroit |
|
Middle Branch Escanaba River At Humboldt, Mi
12 hours ago · USGS 04057800 |
53 cfs | 2.51 ft | 61°F | 45°F | 1,526 ft | Escanaba |
|
Red Cedar River At East Lansing, Mi
11 hours ago · USGS 04112500 |
52 cfs | 3.28 ft | · | 54°F | 829 ft | Upper Grand |
|
West Branch Ontonagon River Near Bergland, Mi
11 hours ago · USGS 04036000 |
49 cfs | 1.57 ft | · | 47°F | 1,304 ft | Ontonagon |
|
Battle Creek At Battle Creek, Mi
12 hours ago · USGS 04105000 |
41 cfs | · | · | 53°F | 824 ft | Kalamazoo |
|
South Branch Flint River Near Columbiaville, Mi
11 hours ago · USGS 04146063 |
40 cfs | 1.38 ft | · | 53°F | 768 ft | Flint |
|
Portage Creek At Kalamazoo, Mi
11 hours ago · USGS 04106500 |
39 cfs | 2.22 ft | · | 53°F | 766 ft | Kalamazoo |
|
Black River Near Jeddo, Mi
12 hours ago · USGS 04159492 |
38 cfs | 3.19 ft | · | 53°F | 664 ft | St. Clair |
|
Lower River Rouge At Dearborn, Mi
12 hours ago · USGS 04168400 |
38 cfs | 3.21 ft | 71°F | 56°F | 582 ft | Detroit |
|
Galien River Near Sawyer, Mi
12 hours ago · USGS 04096015 |
37 cfs | 6.23 ft | · | 58°F | 614 ft | Little Calumet-Galien |
|
Trap Rock River Near Lake Linden, Mi
12 hours ago · USGS 04043050 |
37 cfs | 3.34 ft | · | 51°F | 633 ft | Keweenaw Peninsula |
|
Clinton River At Auburn Hills, Mi
12 hours ago · USGS 04161000 |
35 cfs | 1.05 ft | · | 53°F | 846 ft | Clinton |
|
South Branch Black River Near Bangor, Mi
12 hours ago · USGS 04102700 |
35 cfs | 2.45 ft | · | 58°F | 613 ft | Black-Macatawa |
|
Saline River Near Saline, Mi
12 hours ago · USGS 04176400 |
33 cfs | 4.95 ft | · | 52°F | 711 ft | Raisin |
|
Red Cedar River Near Williamston, Mi
12 hours ago · USGS 04111379 |
31 cfs | 2.34 ft | · | 55°F | 865 ft | Upper Grand |
|
Middle River Rouge Near Garden City, Mi
12 hours ago · USGS 04167000 |
31 cfs | 2.55 ft | · | 56°F | 609 ft | Detroit |
|
River Rouge At Detroit, Mi
12 hours ago · USGS 04166500 |
31 cfs | 4.80 ft | 72°F | 56°F | 591 ft | Detroit |
|
Mill Creek Near Dexter, Mi
12 hours ago · USGS 04173500 |
26 cfs | 5.58 ft | · | 54°F | 856 ft | Huron |
|
Greenwood Release Near Greenwood, Mi
11 hours ago · USGS 04057814 |
25 cfs | 2.45 ft | · | 46°F | 1,478 ft | Escanaba |
|
South Branch Hog Creek Near Allen, Mi
11 hours ago · USGS 04096515 |
25 cfs | 2.22 ft | · | 52°F | 1,013 ft | St. Joseph |
|
North Branch Clinton River Near Mt. Clemens, Mi
12 hours ago · USGS 04164500 |
22 cfs | 4.34 ft | · | 54°F | 584 ft | Clinton |
|
Middle Branch Clinton River At Macomb, Mi
12 hours ago · USGS 04164800 |
22 cfs | 6.25 ft | · | 53°F | 610 ft | Clinton |
|
Augusta Creek Near Augusta, Mi
12 hours ago · USGS 04105700 |
22 cfs | · | · | 55°F | 817 ft | Kalamazoo |
|
Black River Near Bessemer, Mi
13 hours ago · USGS 04031000 |
21 cfs | 1.95 ft | · | 47°F | 1,186 ft | Black-Presque Isle |
|
Rabbit River Near Hopkins, Mi
12 hours ago · USGS 04108600 |
21 cfs | 2.70 ft | · | 55°F | 717 ft | Kalamazoo |
|
Greenwood Diversion Near Greenwood, Mi
12 hours ago · USGS 04057813 |
21 cfs | 1.59 ft | · | 46°F | 1,439 ft | Escanaba |
|
Kearsley Creek Near Davison, Mi
12 hours ago · USGS 04148140 |
18 cfs | 3.26 ft | · | 52°F | 759 ft | Flint |
|
Maple River At Maple Rapids, Mi
12 hours ago · USGS 04115000 |
16 cfs | 2.61 ft | · | 56°F | 646 ft | Maple |
|
Sycamore Creek At Holt Road Near Holt, Mi
12 hours ago · USGS 04112850 |
14 cfs | 2.20 ft | · | 55°F | 856 ft | Upper Grand |
|
Belle River At Memphis, Mi
12 hours ago · USGS 04160600 |
14 cfs | 1.13 ft | · | 55°F | 713 ft | St. Clair |
|
East Branch Pine River Near Tustin, Mi
12 hours ago · USGS 04124500 |
12 cfs | 2.37 ft | · | 48°F | 1,149 ft | Manistee |
|
Fish Creek Near Crystal, Mi
12 hours ago · USGS 04115265 |
11 cfs | 1.93 ft | · | 56°F | 802 ft | Maple |
|
Wanadoga Creek Near Battle Creek, Mi
12 hours ago · USGS 04104945 |
11 cfs | 3.10 ft | · | 55°F | 833 ft | Kalamazoo |
|
Mill Creek Near Avoca, Mi
12 hours ago · USGS 04159900 |
9 cfs | · | · | 55°F | 714 ft | St. Clair |
|
Black River Near Garnet, Mi
11 hours ago · USGS 04046000 |
9 cfs | 2.50 ft | · | 53°F | 655 ft | Brevoort-Millecoquins |
|
East Pond Creek At Romeo, Mi
12 hours ago · USGS 04164100 |
7 cfs | 1.12 ft | · | 53°F | 778 ft | Clinton |
|
Upper River Rouge At Farmington, Mi
12 hours ago · USGS 04166300 |
6 cfs | 2.96 ft | · | 54°F | 692 ft | Detroit |
|
Schweitzer Creek Near Palmer, Mi
12 hours ago · USGS 04058200 |
6 cfs | 2.95 ft | · | 48°F | 1,277 ft | Escanaba |
|
Farmers Creek Near Lapeer, Mi
12 hours ago · USGS 04146000 |
5 cfs | 15.19 ft | · | 52°F | 827 ft | Flint |
|
West Fork Portage Creek At Kalamazoo, Mi
12 hours ago · USGS 04106400 |
5 cfs | 2.27 ft | · | 53°F | 883 ft | Kalamazoo |
|
West Fork Portage Creek Near Oshtemo, Mi
12 hours ago · USGS 04106320 |
5 cfs | 1.39 ft | · | 55°F | 875 ft | Kalamazoo |
|
Macatawa River At State Road Near Zeeland, Mi
12 hours ago · USGS 04108800 |
4 cfs | 1.94 ft | · | 54°F | 598 ft | Black-Macatawa |
|
Plum Brook At Utica, Mi
11 hours ago · USGS 04163400 |
4 cfs | 2.11 ft | · | 54°F | 633 ft | Clinton |
|
Bear Creek Near Muskegon, Mi
11 hours ago · USGS 04122100 |
3 cfs | 10.48 ft | · | 59°F | 609 ft | Muskegon |
|
Malletts Creek At Ann Arbor, Mi
12 hours ago · USGS 04174518 |
2 cfs | 3.12 ft | · | 52°F | 749 ft | Huron |
|
Ecorse River At Dearborn Heights, Mi
12 hours ago · USGS 04168580 |
1 cfs | 2.26 ft | · | 56°F | 611 ft | Detroit |
|
Cisco Branch Ontonagon R At Cisco Lake Outlet, Mi
13 hours ago · USGS 04037500 |
1 cfs | 3.91 ft | · | 46°F | 1,688 ft | Ontonagon |
|
Sloan Creek Near Williamston, Mi
12 hours ago · USGS 04112000 |
0 cfs | 1.40 ft | · | 55°F | 870 ft | Upper Grand |
See every Michigan gauge ranked against normal.
- Percentile rank & % of median for all 126 gauges
- 15-day PULSE forecast on every gauge
- Custom flow alerts & full daily history
About Michigan streamflow
Where does the Michigan streamflow data come from?
The U.S. Geological Survey National Water Information System. USGS streamgauges report continuously (every 15 minutes) and the data is the canonical real-time record for U.S. rivers. Snoflo pulls the latest readings and joins them to a 7-day NOAA weather forecast for each station.
What is cfs?
Cubic feet per second — the standard unit for streamflow. One cfs is about 7.5 gallons per second. Small creeks run at single-digit cfs; the Mississippi at hundreds of thousands.
What does Gauge Height mean?
The water level at the gauge in feet above the reference datum. Used together with discharge to track river state. Flood stage and runnable levels are typically expressed in gauge height (e.g., "flood at 16 ft").
How fresh is the Michigan data?
USGS streamgauges report every 15 minutes; Snoflo re-pulls throughout the day. The AI briefing regenerates daily.
Can I get a flow alert for a Michigan gauge?
Yes. Save any USGS gauge as a favorite in the Snoflo iOS app, set a discharge or stage threshold (e.g. "alert me when discharge crosses 2,000 cfs"), and you'll get a push the moment it crosses.
Is this a substitute for an NWS flood warning?
No. Snoflo is informational. For flood life-safety decisions always follow guidance from your local NWS forecast office and state emergency management. Snoflo data is one input among several.