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 110% of normal, with the St. Joseph River At Niles reporting the highest discharge in the state at 4,510 cfs and a gauge stage of 6.79 ft.
Meanwhile, the Escanaba River At Cornell is seeing a spike today — up 10% 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
Michigan is experiencing a dangerous heat wave with multiple heat alerts spanning across the state through July 14. Extreme Heat Warnings are in effect for Delta and Menominee Counties in the Upper Peninsula with heat index values reaching 105-110°F, while portions of central and western Upper Michigan face heat index values of 95-102°F. Heat Advisories cover Northern Lower Michigan including areas around Alpena, Oscoda, and Alcona Counties with heat indices between 97-104°F and overnight lows struggling to drop below 75°F. Extreme Heat Watches extend through Tuesday evening for central Michigan counties (Clare, Gratiot, Isabella, Clinton, Ingham, Jackson) and all of southeast Michigan with dangerous heat index values potentially reaching 105-107°F. Residents throughout Michigan should take precautions against heat-related illnesses, stay hydrated, limit outdoor activities, and check on vulnerable populations, particularly during peak heating hours Tuesday afternoon through evening.
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 6.79 ft
Biggest 24h spike
Now 426 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
8 hours ago · USGS 04101500 |
4,120 cfs | 6.53 ft | 80°F | 64°F | 664 ft | St. Joseph |
|
Menominee River At Koss, Mi
8 hours ago · USGS 04066800 |
2,300 cfs | 10.22 ft | · | 71°F | 663 ft | Menominee |
|
Grand River At Grand Rapids, Mi
8 hours ago · USGS 04119000 |
2,210 cfs | 2.16 ft | · | 66°F | 587 ft | Lower Grand |
|
Menominee River At White Rapids Dam Near Banat, Mi
8 hours ago · USGS 04066030 |
2,130 cfs | 7.16 ft | · | 70°F | 689 ft | Menominee |
|
Menominee River Near Vulcan, Mi
9 hours ago · USGS 04065722 |
2,110 cfs | 6.10 ft | · | 71°F | 807 ft | Menominee |
|
St. Joseph River At Mottville, Mi
8 hours ago · USGS 04099000 |
2,080 cfs | 4.00 ft | · | 63°F | 780 ft | St. Joseph |
|
Menominee River Below Pemene Creek Near Pembine, Mi
8 hours ago · USGS 04066003 |
2,050 cfs | 7.80 ft | · | 71°F | 748 ft | Menominee |
|
Manistee River Near Wellston, Mi
8 hours ago · USGS 04125550 |
1,880 cfs | 8.92 ft | 71°F | 64°F | 621 ft | Manistee |
|
Au Sable River Near Au Sable, Mi
8 hours ago · USGS 04137500 |
1,480 cfs | 8.92 ft | 76°F | 66°F | 587 ft | Au Sable |
|
Kalamazoo River At New Richmond, Mi
8 hours ago · USGS 04108660 |
1,460 cfs | 10.90 ft | 81°F | 66°F | 605 ft | Kalamazoo |
|
St. Joseph River At Three Rivers, Mi
8 hours ago · USGS 04097500 |
1,420 cfs | 4.56 ft | · | 63°F | 800 ft | St. Joseph |
|
Au Sable River Near Curtisville, Mi
8 hours ago · USGS 04137005 |
1,310 cfs | 8.61 ft | 73°F | 65°F | 803 ft | Au Sable |
|
Au Sable River Near Mc Kinley, Mi
8 hours ago · USGS 04136900 |
1,300 cfs | 7.85 ft | 71°F | 64°F | 853 ft | Au Sable |
|
Manistee River Near Mesick, Mi
8 hours ago · USGS 04124200 |
1,230 cfs | 3.90 ft | 71°F | 63°F | 754 ft | Manistee |
|
Muskegon River Near Croton, Mi
8 hours ago · USGS 04121970 |
1,210 cfs | 4.93 ft | 71°F | 65°F | 685 ft | Muskegon |
|
Manistee River Near Sherman, Mi
8 hours ago · USGS 04124000 |
1,200 cfs | 12.57 ft | 69°F | 63°F | 820 ft | Manistee |
|
Menominee River Near Florence, Mi
9 hours ago · USGS 04063000 |
1,090 cfs | 3.69 ft | · | 71°F | 1,118 ft | Brule |
|
Au Sable River At Mio, Mi
8 hours ago · USGS 04136500 |
1,090 cfs | 3.30 ft | 71°F | 65°F | 946 ft | Au Sable |
|
Grand River At Ionia, Mi
7 hours ago · USGS 04116000 |
1,070 cfs | 8.95 ft | · | 64°F | 620 ft | Lower Grand |
|
Au Sable River Near Red Oak, Mi
8 hours ago · USGS 04136000 |
996 cfs | 3.42 ft | 69°F | 66°F | 1,008 ft | Au Sable |
|
Manistique River Near Manistique, Mi
8 hours ago · USGS 04056500 |
832 cfs | 3.43 ft | · | 67°F | 617 ft | Manistique |
|
Kalamazoo River At Comstock, Mi
8 hours ago · USGS 04106000 |
805 cfs | 4.34 ft | · | 64°F | 792 ft | Kalamazoo |
|
River Raisin Near Monroe, Mi
8 hours ago · USGS 04176500 |
785 cfs | 3.61 ft | 67°F | 61°F | 618 ft | Raisin |
|
Grand River At Portland, Mi
8 hours ago · USGS 04114000 |
781 cfs | 5.82 ft | · | 63°F | 719 ft | Upper Grand |
|
Michigamme River Near Crystal Falls, Mi
8 hours ago · USGS 04062500 |
673 cfs | 3.83 ft | · | 69°F | 1,305 ft | Michigamme |
|
Muskegon River At Evart, Mi
8 hours ago · USGS 04121500 |
658 cfs | 7.30 ft | · | 64°F | 997 ft | Muskegon |
|
Tittabawassee River At Midland, Mi
8 hours ago · USGS 04156000 |
625 cfs | 9.45 ft | · | 66°F | 586 ft | Tittabawassee |
|
Grand River At Lansing, Mi
8 hours ago · USGS 04113000 |
592 cfs | 3.06 ft | · | 64°F | 808 ft | Upper Grand |
|
Pere Marquette River At Scottville, Mi
8 hours ago · USGS 04122500 |
567 cfs | 1.39 ft | · | 67°F | 625 ft | Pere Marquette-White |
|
Kalamazoo River Near Battle Creek, Mi
8 hours ago · USGS 04105500 |
542 cfs | 3.17 ft | · | 64°F | 804 ft | Kalamazoo |
|
Ontonagon River Near Rockland, Mi
8 hours ago · USGS 04040000 |
512 cfs | 5.30 ft | 32°F | 74°F | 670 ft | Ontonagon |
|
Paw Paw River At Riverside, Mi
8 hours ago · USGS 04102500 |
497 cfs | 7.09 ft | · | 65°F | 610 ft | St. Joseph |
|
Thunder Bay River At Herron Road Near Bolton, Mi
8 hours ago · USGS 04133501 |
447 cfs | 11.98 ft | · | 69°F | 704 ft | Thunder Bay |
|
Escanaba River At Cornell, Mi
8 hours ago · USGS 04059000 |
397 cfs | 1.52 ft | 69°F | 66°F | 735 ft | Escanaba |
|
Tahquamenon River Near Paradise, Mi
8 hours ago · USGS 04045500 |
352 cfs | 3.47 ft | · | 72°F | 729 ft | Tahquamenon |
|
River Raisin Near Adrian, Mi
8 hours ago · USGS 04176000 |
345 cfs | 5.99 ft | · | 63°F | 699 ft | Raisin |
|
Kalamazoo River At Marshall, Mi
8 hours ago · USGS 04103500 |
343 cfs | 4.48 ft | · | 62°F | 882 ft | Kalamazoo |
|
White River Near Whitehall, Mi
8 hours ago · USGS 04122200 |
300 cfs | 1.44 ft | · | 67°F | 619 ft | Pere Marquette-White |
|
Paint River Nr Alpha, Mi
9 hours ago · USGS 04062000 |
292 cfs | 3.38 ft | · | 68°F | 1,271 ft | Brule |
|
Dowagiac River At Sumnerville, Mi
8 hours ago · USGS 04101800 |
291 cfs | 5.79 ft | · | 63°F | 716 ft | St. Joseph |
|
Clinton River At Moravian Drive At Mt. Clemens, Mi
8 hours ago · USGS 04165500 |
290 cfs | 5.91 ft | 77°F | 64°F | 574 ft | Clinton |
|
Huron River At Ann Arbor, Mi
8 hours ago · USGS 04174500 |
266 cfs | 12.27 ft | 64°F | 62°F | 758 ft | Huron |
|
Huron River Near Hamburg, Mi
8 hours ago · USGS 04172000 |
264 cfs | 4.85 ft | · | 62°F | 852 ft | Huron |
|
Pine River At High School Bridge Nr Hoxeyville, Mi
8 hours ago · USGS 04125460 |
243 cfs | 4.00 ft | 63°F | 64°F | 856 ft | Manistee |
|
Sturgeon River At Wolverine, Mi
8 hours ago · USGS 04127997 |
240 cfs | 2.97 ft | · | 66°F | 778 ft | Cheboygan |
|
South Branch Au Sable River Near Luzerne, Mi
8 hours ago · USGS 04135700 |
238 cfs | 4.89 ft | 67°F | 65°F | 1,070 ft | Au Sable |
|
Rifle River Near Sterling, Mi
8 hours ago · USGS 04142000 |
228 cfs | 1.64 ft | 53°F | 64°F | 639 ft | Au Gres-Rifle |
|
Flint River Near Flint, Mi
8 hours ago · USGS 04148500 |
217 cfs | 3.47 ft | · | 65°F | 684 ft | Flint |
|
Brule River At Us Highway 2 Near Florence, Mi
9 hours ago · USGS 04060993 |
214 cfs | 3.59 ft | · | 71°F | 1,241 ft | Brule |
|
Clinton River Near Fraser, Mi
8 hours ago · USGS 04164000 |
208 cfs | 6.09 ft | · | 64°F | 586 ft | Clinton |
|
Jordan River Near East Jordan, Mi
8 hours ago · USGS 04127800 |
189 cfs | 3.51 ft | · | 68°F | 629 ft | Boardman-Charlevoix |
|
Sturgeon River Near Alston, Mi
8 hours ago · USGS 04041500 |
175 cfs | 3.97 ft | 77°F | 73°F | 735 ft | Sturgeon |
|
Tobacco River At Glidden Road At Beaverton, Mi
8 hours ago · USGS 04152500 |
174 cfs | 2.29 ft | · | 65°F | 715 ft | Tittabawassee |
|
Clinton River At Sterling Heights, Mi
8 hours ago · USGS 04161820 |
169 cfs | 7.95 ft | 75°F | 66°F | 612 ft | Clinton |
|
Ford River Near Hyde, Mi
8 hours ago · USGS 04059500 |
158 cfs | 2.17 ft | 46°F | 66°F | 707 ft | Cedar-Ford |
|
Cass River At Frankenmuth, Mi
8 hours ago · USGS 04151500 |
156 cfs | 4.16 ft | · | 65°F | 591 ft | Cass |
|
Chippewa River Near Mount Pleasant, Mi
8 hours ago · USGS 04154000 |
154 cfs | 3.15 ft | · | 65°F | 730 ft | Pine |
|
Shiawassee River At Owosso, Mi
8 hours ago · USGS 04144500 |
154 cfs | 2.27 ft | · | 65°F | 695 ft | Shiawassee |
|
Boardman R Above Brown Bridge Road Nr Mayfield, Mi
8 hours ago · USGS 04126970 |
144 cfs | 3.44 ft | · | 65°F | 826 ft | Boardman-Charlevoix |
|
Platte River At Honor, Mi
8 hours ago · USGS 04126740 |
143 cfs | 1.28 ft | · | 65°F | 606 ft | Betsie-Platte |
|
Prairie River Near Nottawa, Mi
8 hours ago · USGS 04097540 |
133 cfs | 4.19 ft | 36°F | 62°F | 872 ft | St. Joseph |
|
St. Joseph River At Burlington, Mi
8 hours ago · USGS 04096405 |
127 cfs | 3.77 ft | · | 63°F | 906 ft | St. Joseph |
|
Thornapple River Near Hastings, Mi
8 hours ago · USGS 04117500 |
124 cfs | 3.03 ft | · | 64°F | 803 ft | Thornapple |
|
Rogue River Near Rockford, Mi
8 hours ago · USGS 04118500 |
121 cfs | 3.76 ft | · | 66°F | 665 ft | Lower Grand |
|
Little Muskegon River Near Oak Grove, Mi
8 hours ago · USGS 04121944 |
118 cfs | 3.25 ft | 71°F | 65°F | 756 ft | Muskegon |
|
Pine River Near Midland, Mi
8 hours ago · USGS 04155500 |
118 cfs | 2.76 ft | · | 65°F | 628 ft | Pine |
|
Grand River At Jackson, Mi
8 hours ago · USGS 04109000 |
117 cfs | 9.61 ft | · | 62°F | 911 ft | Upper Grand |
|
Middle Branch Ontonagon River Near Paulding, Mi
8 hours ago · USGS 04033000 |
115 cfs | 4.18 ft | · | 70°F | 1,500 ft | Ontonagon |
|
Flint River Near Otisville, Mi
7 hours ago · USGS 04147500 |
114 cfs | 2.87 ft | · | 65°F | 728 ft | Flint |
|
South Branch Hog Creek Near Allen, Mi
7 hours ago · USGS 04096515 |
111 cfs | 3.71 ft | · | 61°F | 1,013 ft | St. Joseph |
|
Middle Branch Escanaba River Nr Princeton, Mi
7 hours ago · USGS 04058100 |
110 cfs | 1.69 ft | · | 68°F | 1,114 ft | Escanaba |
|
Clinton River At Auburn Hills, Mi
8 hours ago · USGS 04161000 |
104 cfs | 1.61 ft | · | 64°F | 846 ft | Clinton |
|
Sturgeon River Near Nahma Junction, Mi
8 hours ago · USGS 04057510 |
98 cfs | 4.15 ft | · | 65°F | 662 ft | Fishdam-Sturgeon |
|
Silver River Near L'Anse, Mi
8 hours ago · USGS 04043150 |
88 cfs | 6.97 ft | · | 74°F | 625 ft | Dead-Kelsey |
|
Battle Creek At Battle Creek, Mi
8 hours ago · USGS 04105000 |
87 cfs | · | · | 64°F | 824 ft | Kalamazoo |
|
Clam River At Vogel Center, Mi
8 hours ago · USGS 04121300 |
86 cfs | 2.81 ft | · | 64°F | 1,134 ft | Muskegon |
|
Pigeon R At Sturgeon Valley Rd Near Vanderbilt, Mi
8 hours ago · USGS 04128990 |
83 cfs | 2.30 ft | · | 66°F | 914 ft | Cheboygan |
|
Red Cedar River At East Lansing, Mi
8 hours ago · USGS 04112500 |
78 cfs | 3.39 ft | · | 64°F | 829 ft | Upper Grand |
|
Iron River At County Hwy-424 At Caspian, Mi
9 hours ago · USGS 04060500 |
64 cfs | 4.11 ft | · | 69°F | 1,446 ft | Brule |
|
Looking Glass River Near Eagle, Mi
8 hours ago · USGS 04114498 |
64 cfs | 2.73 ft | · | 63°F | 754 ft | Upper Grand |
|
South Branch Flint River Near Columbiaville, Mi
8 hours ago · USGS 04146063 |
62 cfs | 1.55 ft | · | 65°F | 768 ft | Flint |
|
West Branch Ontonagon River Near Bergland, Mi
8 hours ago · USGS 04036000 |
54 cfs | 1.65 ft | · | 72°F | 1,304 ft | Ontonagon |
|
South Branch Black River Near Bangor, Mi
8 hours ago · USGS 04102700 |
54 cfs | 2.98 ft | · | 64°F | 613 ft | Black-Macatawa |
|
South Branch Tobacco River Near Beaverton, Mi
8 hours ago · USGS 04152238 |
53 cfs | 4.22 ft | · | 65°F | 727 ft | Tittabawassee |
|
Saline River Near Saline, Mi
8 hours ago · USGS 04176400 |
50 cfs | 5.28 ft | · | 63°F | 711 ft | Raisin |
|
Galien River Near Sawyer, Mi
8 hours ago · USGS 04096015 |
47 cfs | 6.57 ft | · | 64°F | 614 ft | Little Calumet-Galien |
|
Maple River At Maple Rapids, Mi
8 hours ago · USGS 04115000 |
45 cfs | 3.17 ft | · | 63°F | 646 ft | Maple |
|
Portage Creek At Kalamazoo, Mi
8 hours ago · USGS 04106500 |
43 cfs | 2.25 ft | · | 64°F | 766 ft | Kalamazoo |
|
River Rouge At Detroit, Mi
8 hours ago · USGS 04166500 |
41 cfs | 5.00 ft | 74°F | 65°F | 591 ft | Detroit |
|
Mill Creek Near Dexter, Mi
8 hours ago · USGS 04173500 |
40 cfs | 5.86 ft | · | 61°F | 856 ft | Huron |
|
Kearsley Creek Near Davison, Mi
8 hours ago · USGS 04148140 |
39 cfs | 3.80 ft | · | 65°F | 759 ft | Flint |
|
Lower River Rouge At Dearborn, Mi
8 hours ago · USGS 04168400 |
39 cfs | 3.22 ft | 73°F | 65°F | 582 ft | Detroit |
|
Red Cedar River Near Williamston, Mi
8 hours ago · USGS 04111379 |
37 cfs | 2.44 ft | · | 62°F | 865 ft | Upper Grand |
|
Black River Near Jeddo, Mi
8 hours ago · USGS 04159492 |
35 cfs | 3.16 ft | · | 61°F | 664 ft | St. Clair |
|
Middle River Rouge Near Garden City, Mi
8 hours ago · USGS 04167000 |
34 cfs | 2.62 ft | · | 65°F | 609 ft | Detroit |
|
North Branch Clinton River Near Mt. Clemens, Mi
8 hours ago · USGS 04164500 |
30 cfs | 4.49 ft | · | 66°F | 584 ft | Clinton |
|
Augusta Creek Near Augusta, Mi
8 hours ago · USGS 04105700 |
27 cfs | · | · | 64°F | 817 ft | Kalamazoo |
|
Sturgeon River Near Sidnaw, Mi
7 hours ago · USGS 04040500 |
25 cfs | 3.43 ft | · | 70°F | 1,228 ft | Sturgeon |
|
Black River Near Bessemer, Mi
9 hours ago · USGS 04031000 |
25 cfs | 1.99 ft | · | 74°F | 1,186 ft | Black-Presque Isle |
|
Greenwood Release Near Greenwood, Mi
8 hours ago · USGS 04057814 |
25 cfs | 2.41 ft | · | 71°F | 1,478 ft | Escanaba |
|
River Rouge At Southfield, Mi
8 hours ago · USGS 04166100 |
22 cfs | 3.86 ft | 72°F | 65°F | 618 ft | Detroit |
|
Rabbit River Near Hopkins, Mi
8 hours ago · USGS 04108600 |
21 cfs | 2.70 ft | · | 64°F | 717 ft | Kalamazoo |
|
Greenwood Diversion Near Greenwood, Mi
8 hours ago · USGS 04057813 |
20 cfs | 1.55 ft | · | 71°F | 1,439 ft | Escanaba |
|
Fish Creek Near Crystal, Mi
8 hours ago · USGS 04115265 |
18 cfs | 2.15 ft | · | 64°F | 802 ft | Maple |
|
Belle River At Memphis, Mi
8 hours ago · USGS 04160600 |
18 cfs | 1.24 ft | · | 60°F | 713 ft | St. Clair |
|
Cisco Branch Ontonagon R At Cisco Lake Outlet, Mi
9 hours ago · USGS 04037500 |
18 cfs | 4.39 ft | · | 70°F | 1,688 ft | Ontonagon |
|
Sycamore Creek At Holt Road Near Holt, Mi
8 hours ago · USGS 04112850 |
17 cfs | 2.27 ft | · | 63°F | 856 ft | Upper Grand |
|
Mill Creek Near Avoca, Mi
8 hours ago · USGS 04159900 |
16 cfs | 1.05 ft | · | 60°F | 714 ft | St. Clair |
|
Middle Branch Escanaba River At Humboldt, Mi
8 hours ago · USGS 04057800 |
15 cfs | 1.95 ft | 69°F | 71°F | 1,526 ft | Escanaba |
|
Wanadoga Creek Near Battle Creek, Mi
8 hours ago · USGS 04104945 |
15 cfs | 3.26 ft | · | 63°F | 833 ft | Kalamazoo |
|
East Branch Pine River Near Tustin, Mi
8 hours ago · USGS 04124500 |
11 cfs | 2.36 ft | · | 64°F | 1,149 ft | Manistee |
|
Middle Branch Clinton River At Macomb, Mi
8 hours ago · USGS 04164800 |
10 cfs | 6.03 ft | · | 62°F | 610 ft | Clinton |
|
Black River Near Garnet, Mi
8 hours ago · USGS 04046000 |
10 cfs | 2.52 ft | · | 69°F | 655 ft | Brevoort-Millecoquins |
|
Upper River Rouge At Farmington, Mi
8 hours ago · USGS 04166300 |
8 cfs | 3.01 ft | · | 65°F | 692 ft | Detroit |
|
West Fork Portage Creek At Kalamazoo, Mi
8 hours ago · USGS 04106400 |
7 cfs | 2.36 ft | · | 64°F | 883 ft | Kalamazoo |
|
Farmers Creek Near Lapeer, Mi
8 hours ago · USGS 04146000 |
7 cfs | 15.25 ft | · | 62°F | 827 ft | Flint |
|
East Pond Creek At Romeo, Mi
8 hours ago · USGS 04164100 |
6 cfs | 1.11 ft | · | 62°F | 778 ft | Clinton |
|
Schweitzer Creek Near Palmer, Mi
8 hours ago · USGS 04058200 |
6 cfs | 2.96 ft | · | 70°F | 1,277 ft | Escanaba |
|
Macatawa River At State Road Near Zeeland, Mi
8 hours ago · USGS 04108800 |
5 cfs | 2.01 ft | · | 65°F | 598 ft | Black-Macatawa |
|
West Fork Portage Creek Near Oshtemo, Mi
8 hours ago · USGS 04106320 |
5 cfs | 1.35 ft | · | 64°F | 875 ft | Kalamazoo |
|
Malletts Creek At Ann Arbor, Mi
8 hours ago · USGS 04174518 |
5 cfs | 3.25 ft | · | 62°F | 749 ft | Huron |
|
Bear Creek Near Muskegon, Mi
8 hours ago · USGS 04122100 |
4 cfs | 10.56 ft | · | 67°F | 609 ft | Muskegon |
|
Plum Brook At Utica, Mi
7 hours ago · USGS 04163400 |
4 cfs | 2.09 ft | · | 64°F | 633 ft | Clinton |
|
Ecorse River At Dearborn Heights, Mi
8 hours ago · USGS 04168580 |
1 cfs | 2.34 ft | · | 65°F | 611 ft | Detroit |
|
Sloan Creek Near Williamston, Mi
8 hours ago · USGS 04112000 |
1 cfs | 1.55 ft | · | 63°F | 870 ft | Upper Grand |
See every Michigan gauge ranked against normal.
- Percentile rank & % of median for all 125 gauges
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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.