Flow report
Michigan River Levels & Streamflow
As of Aug 17, 2026, Michigan rivers are running at 91% of normal across 123 USGS gauges — the highest is 2,750 cfs on the St. Joseph River At Niles. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Michigan.
USGS gauges
123
State percent normal
91%
Paddle runs
0
Updated
Aug 17
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Every USGS streamgauge filtered to Michigan.
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August
17
2026
Flow briefing
Streamflow levels across Michigan are currently 91% of normal, with the St. Joseph River At Niles reporting the highest discharge in the state at 2,750 cfs and a gauge stage of 5.57 ft.
Meanwhile, the Grand River At Ionia is seeing a spike today — up 6% 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.
River levels near Michigan towns
Michigan at a glance
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
91%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
St. Joseph River At Niles
2,750 cfs
Gauge stage 5.57 ft
Biggest 24h spike
Grand River At Ionia
+6%
Now 740 cfs
Network coverage
Gauges + rivers tracked
123 + 0
USGS gauges feeding 0 named rivers in Michigan.
Full streamgauge inventory
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
22 hours ago · USGS 04101500 |
2,810 cfs | 5.60 ft | 74°F | 70°F | 664 ft | St. Joseph |
|
Grand River At Grand Rapids, Mi
23 hours ago · USGS 04119000 |
1,790 cfs | 1.66 ft | · | 70°F | 587 ft | Lower Grand |
|
Manistee River Near Wellston, Mi
22 hours ago · USGS 04125550 |
1,530 cfs | 8.71 ft | 70°F | 68°F | 621 ft | Manistee |
|
Menominee River At Koss, Mi
23 hours ago · USGS 04066800 |
1,360 cfs | 9.82 ft | · | 66°F | 663 ft | Menominee |
|
Menominee River Near Vulcan, Mi
2 days ago · USGS 04065722 |
1,150 cfs | 5.07 ft | · | 54°F | 807 ft | Menominee |
|
Au Sable River Near Curtisville, Mi
22 hours ago · USGS 04137005 |
1,150 cfs | 8.20 ft | 70°F | 66°F | 803 ft | Au Sable |
|
Manistee River Near Mesick, Mi
22 hours ago · USGS 04124200 |
1,080 cfs | 3.56 ft | 69°F | 68°F | 754 ft | Manistee |
|
Kalamazoo River At New Richmond, Mi
23 hours ago · USGS 04108660 |
1,070 cfs | 10.36 ft | 77°F | 71°F | 605 ft | Kalamazoo |
|
Menominee River Below Pemene Creek Near Pembine, Mi
23 hours ago · USGS 04066003 |
1,060 cfs | 6.97 ft | · | 66°F | 748 ft | Menominee |
|
Au Sable River Near Au Sable, Mi
22 hours ago · USGS 04137500 |
1,050 cfs | 8.35 ft | 76°F | 68°F | 587 ft | Au Sable |
|
Au Sable River Near Mc Kinley, Mi
22 hours ago · USGS 04136900 |
1,040 cfs | 7.50 ft | 69°F | 66°F | 853 ft | Au Sable |
|
Menominee River At White Rapids Dam Near Banat, Mi
23 hours ago · USGS 04066030 |
1,030 cfs | 6.24 ft | · | 66°F | 689 ft | Menominee |
|
Muskegon River Near Croton, Mi
22 hours ago · USGS 04121970 |
992 cfs | 4.39 ft | 73°F | 68°F | 685 ft | Muskegon |
|
Manistee River Near Sherman, Mi
22 hours ago · USGS 04124000 |
968 cfs | 11.91 ft | 66°F | 68°F | 820 ft | Manistee |
|
St. Joseph River At Mottville, Mi
22 hours ago · USGS 04099000 |
955 cfs | 2.72 ft | · | 70°F | 780 ft | St. Joseph |
|
Au Sable River At Mio, Mi
22 hours ago · USGS 04136500 |
903 cfs | 3.01 ft | 68°F | 66°F | 946 ft | Au Sable |
|
Menominee River Near Florence, Mi
1 day ago · USGS 04063000 |
836 cfs | 3.31 ft | · | 65°F | 1,118 ft | Brule |
|
Au Sable River Near Red Oak, Mi
22 hours ago · USGS 04136000 |
750 cfs | 3.05 ft | 66°F | 63°F | 1,008 ft | Au Sable |
|
Kalamazoo River At Comstock, Mi
22 hours ago · USGS 04106000 |
662 cfs | 4.14 ft | · | 69°F | 792 ft | Kalamazoo |
|
Grand River At Ionia, Mi
22 hours ago · USGS 04116000 |
647 cfs | 8.19 ft | · | 68°F | 620 ft | Lower Grand |
|
Manistique River Near Manistique, Mi
22 hours ago · USGS 04056500 |
612 cfs | 2.81 ft | · | 67°F | 617 ft | Manistique |
|
Grand River At Portland, Mi
23 hours ago · USGS 04114000 |
562 cfs | 5.47 ft | · | 68°F | 719 ft | Upper Grand |
|
Muskegon River At Evart, Mi
22 hours ago · USGS 04121500 |
507 cfs | 6.89 ft | · | 65°F | 997 ft | Muskegon |
|
St. Joseph River At Three Rivers, Mi
23 hours ago · USGS 04097500 |
498 cfs | 2.92 ft | · | 70°F | 800 ft | St. Joseph |
|
Ontonagon River Near Rockland, Mi
22 hours ago · USGS 04040000 |
489 cfs | 5.25 ft | 32°F | 68°F | 670 ft | Ontonagon |
|
Pere Marquette River At Scottville, Mi
23 hours ago · USGS 04122500 |
452 cfs | · | · | 69°F | 625 ft | Pere Marquette-White |
|
Tittabawassee River At Midland, Mi
22 hours ago · USGS 04156000 |
440 cfs | 9.01 ft | · | 71°F | 586 ft | Tittabawassee |
|
Thunder Bay River At Herron Road Near Bolton, Mi
22 hours ago · USGS 04133501 |
418 cfs | 11.90 ft | · | 67°F | 704 ft | Thunder Bay |
|
Kalamazoo River Near Battle Creek, Mi
22 hours ago · USGS 04105500 |
412 cfs | 2.99 ft | · | 70°F | 804 ft | Kalamazoo |
|
Paw Paw River At Riverside, Mi
23 hours ago · USGS 04102500 |
403 cfs | 6.49 ft | · | 70°F | 610 ft | St. Joseph |
|
Michigamme River Near Crystal Falls, Mi
23 hours ago · USGS 04062500 |
391 cfs | 3.17 ft | · | 65°F | 1,305 ft | Michigamme |
|
Grand River At Lansing, Mi
23 hours ago · USGS 04113000 |
381 cfs | 2.53 ft | · | 69°F | 808 ft | Upper Grand |
|
Tahquamenon River Near Paradise, Mi
23 hours ago · USGS 04045500 |
377 cfs | 3.54 ft | · | 66°F | 729 ft | Tahquamenon |
|
Escanaba River At Cornell, Mi
23 hours ago · USGS 04059000 |
293 cfs | 1.41 ft | 70°F | 65°F | 735 ft | Escanaba |
|
Paint River Nr Alpha, Mi
23 hours ago · USGS 04062000 |
288 cfs | 3.37 ft | · | 65°F | 1,271 ft | Brule |
|
Kalamazoo River At Marshall, Mi
23 hours ago · USGS 04103500 |
268 cfs | 4.26 ft | · | 69°F | 882 ft | Kalamazoo |
|
Dowagiac River At Sumnerville, Mi
23 hours ago · USGS 04101800 |
255 cfs | 5.58 ft | · | 70°F | 716 ft | St. Joseph |
|
River Raisin Near Monroe, Mi
23 hours ago · USGS 04176500 |
246 cfs | 2.59 ft | 67°F | 69°F | 618 ft | Raisin |
|
White River Near Whitehall, Mi
22 hours ago · USGS 04122200 |
241 cfs | 1.08 ft | · | 69°F | 619 ft | Pere Marquette-White |
|
Pine River At High School Bridge Nr Hoxeyville, Mi
22 hours ago · USGS 04125460 |
209 cfs | 3.92 ft | 60°F | 68°F | 856 ft | Manistee |
|
Sturgeon River At Wolverine, Mi
22 hours ago · USGS 04127997 |
203 cfs | 2.81 ft | · | 66°F | 778 ft | Cheboygan |
|
Rifle River Near Sterling, Mi
22 hours ago · USGS 04142000 |
200 cfs | 1.50 ft | 53°F | 67°F | 639 ft | Au Gres-Rifle |
|
Brule River At Us Highway 2 Near Florence, Mi
23 hours ago · USGS 04060993 |
177 cfs | 3.45 ft | · | 65°F | 1,241 ft | Brule |
|
Jordan River Near East Jordan, Mi
23 hours ago · USGS 04127800 |
174 cfs | 3.41 ft | · | 68°F | 629 ft | Boardman-Charlevoix |
|
Tobacco River At Glidden Road At Beaverton, Mi
23 hours ago · USGS 04152500 |
162 cfs | 2.32 ft | · | 67°F | 715 ft | Tittabawassee |
|
Chippewa River Near Mount Pleasant, Mi
22 hours ago · USGS 04154000 |
149 cfs | 3.13 ft | · | 67°F | 730 ft | Pine |
|
River Raisin Near Adrian, Mi
22 hours ago · USGS 04176000 |
145 cfs | 4.22 ft | · | 68°F | 699 ft | Raisin |
|
Thornapple River Near Hastings, Mi
22 hours ago · USGS 04117500 |
142 cfs | 3.14 ft | · | 68°F | 803 ft | Thornapple |
|
Platte River At Honor, Mi
23 hours ago · USGS 04126740 |
138 cfs | 1.25 ft | · | 69°F | 606 ft | Betsie-Platte |
|
South Branch Au Sable River Near Luzerne, Mi
22 hours ago · USGS 04135700 |
137 cfs | 4.53 ft | 65°F | 64°F | 1,070 ft | Au Sable |
|
Little Muskegon River Near Oak Grove, Mi
22 hours ago · USGS 04121944 |
131 cfs | 3.03 ft | 67°F | 68°F | 756 ft | Muskegon |
|
Clinton River At Moravian Drive At Mt. Clemens, Mi
22 hours ago · USGS 04165500 |
131 cfs | 5.78 ft | 74°F | 70°F | 574 ft | Clinton |
|
Rogue River Near Rockford, Mi
23 hours ago · USGS 04118500 |
119 cfs | 3.75 ft | · | 69°F | 665 ft | Lower Grand |
|
Boardman R Above Brown Bridge Road Nr Mayfield, Mi
22 hours ago · USGS 04126970 |
119 cfs | 3.24 ft | · | 70°F | 826 ft | Boardman-Charlevoix |
|
Huron River At Ann Arbor, Mi
22 hours ago · USGS 04174500 |
107 cfs | 11.79 ft | 64°F | 69°F | 758 ft | Huron |
|
Shiawassee River At Owosso, Mi
22 hours ago · USGS 04144500 |
105 cfs | 2.05 ft | · | 68°F | 695 ft | Shiawassee |
|
Flint River Near Flint, Mi
23 hours ago · USGS 04148500 |
87 cfs | 2.98 ft | · | 69°F | 684 ft | Flint |
|
Clinton River Near Fraser, Mi
22 hours ago · USGS 04164000 |
86 cfs | 5.11 ft | · | 70°F | 586 ft | Clinton |
|
Huron River Near Hamburg, Mi
23 hours ago · USGS 04172000 |
85 cfs | 4.36 ft | · | 68°F | 852 ft | Huron |
|
Galien River Near Sawyer, Mi
22 hours ago · USGS 04096015 |
82 cfs | 7.33 ft | · | 71°F | 614 ft | Little Calumet-Galien |
|
Middle Branch Ontonagon River Near Paulding, Mi
23 hours ago · USGS 04033000 |
82 cfs | 4.02 ft | · | 68°F | 1,500 ft | Ontonagon |
|
Middle Branch Escanaba River Nr Princeton, Mi
22 hours ago · USGS 04058100 |
79 cfs | 1.51 ft | · | 65°F | 1,114 ft | Escanaba |
|
Battle Creek At Battle Creek, Mi
23 hours ago · USGS 04105000 |
78 cfs | · | · | 69°F | 824 ft | Kalamazoo |
|
Clinton River At Sterling Heights, Mi
23 hours ago · USGS 04161820 |
77 cfs | 7.39 ft | 72°F | 70°F | 612 ft | Clinton |
|
Prairie River Near Nottawa, Mi
23 hours ago · USGS 04097540 |
69 cfs | 3.46 ft | 36°F | 70°F | 872 ft | St. Joseph |
|
Grand River At Jackson, Mi
22 hours ago · USGS 04109000 |
68 cfs | 9.02 ft | · | 68°F | 911 ft | Upper Grand |
|
Sturgeon River Near Nahma Junction, Mi
23 hours ago · USGS 04057510 |
67 cfs | 3.89 ft | · | 65°F | 662 ft | Fishdam-Sturgeon |
|
St. Joseph River At Burlington, Mi
23 hours ago · USGS 04096405 |
63 cfs | 3.18 ft | · | 69°F | 906 ft | St. Joseph |
|
Flint River Near Otisville, Mi
22 hours ago · USGS 04147500 |
62 cfs | 2.43 ft | · | 68°F | 728 ft | Flint |
|
Clam River At Vogel Center, Mi
22 hours ago · USGS 04121300 |
61 cfs | 2.65 ft | · | 68°F | 1,134 ft | Muskegon |
|
Looking Glass River Near Eagle, Mi
23 hours ago · USGS 04114498 |
59 cfs | 2.70 ft | · | 68°F | 754 ft | Upper Grand |
|
Cass River At Frankenmuth, Mi
23 hours ago · USGS 04151500 |
56 cfs | 3.45 ft | · | 68°F | 591 ft | Cass |
|
Iron River At County Hwy-424 At Caspian, Mi
23 hours ago · USGS 04060500 |
55 cfs | 3.95 ft | · | 65°F | 1,446 ft | Brule |
|
Red Cedar River At East Lansing, Mi
22 hours ago · USGS 04112500 |
50 cfs | 3.27 ft | · | 69°F | 829 ft | Upper Grand |
|
Portage Creek At Kalamazoo, Mi
22 hours ago · USGS 04106500 |
43 cfs | 2.27 ft | · | 70°F | 766 ft | Kalamazoo |
|
South Branch Tobacco River Near Beaverton, Mi
22 hours ago · USGS 04152238 |
43 cfs | 4.09 ft | · | 67°F | 727 ft | Tittabawassee |
|
West Branch Ontonagon River Near Bergland, Mi
22 hours ago · USGS 04036000 |
41 cfs | 1.36 ft | · | 68°F | 1,304 ft | Ontonagon |
|
South Branch Black River Near Bangor, Mi
23 hours ago · USGS 04102700 |
40 cfs | 2.59 ft | · | 70°F | 613 ft | Black-Macatawa |
|
Ford River Near Hyde, Mi
23 hours ago · USGS 04059500 |
36 cfs | 1.56 ft | 46°F | 66°F | 707 ft | Cedar-Ford |
|
Pine River Near Midland, Mi
23 hours ago · USGS 04155500 |
30 cfs | 2.34 ft | · | 70°F | 628 ft | Pine |
|
Lower River Rouge At Dearborn, Mi
23 hours ago · USGS 04168400 |
30 cfs | 3.12 ft | 73°F | 70°F | 582 ft | Detroit |
|
Saline River Near Saline, Mi
23 hours ago · USGS 04176400 |
30 cfs | 4.87 ft | · | 68°F | 711 ft | Raisin |
|
Red Cedar River Near Williamston, Mi
22 hours ago · USGS 04111379 |
29 cfs | 2.30 ft | · | 68°F | 865 ft | Upper Grand |
|
Augusta Creek Near Augusta, Mi
23 hours ago · USGS 04105700 |
29 cfs | · | · | 69°F | 817 ft | Kalamazoo |
|
Greenwood Release Near Greenwood, Mi
22 hours ago · USGS 04057814 |
27 cfs | 2.46 ft | · | 64°F | 1,478 ft | Escanaba |
|
Clinton River At Auburn Hills, Mi
23 hours ago · USGS 04161000 |
26 cfs | · | · | 69°F | 846 ft | Clinton |
|
River Rouge At Detroit, Mi
23 hours ago · USGS 04166500 |
25 cfs | 4.68 ft | 71°F | 71°F | 591 ft | Detroit |
|
Mill Creek Near Dexter, Mi
23 hours ago · USGS 04173500 |
24 cfs | 5.54 ft | · | 68°F | 856 ft | Huron |
|
South Branch Flint River Near Columbiaville, Mi
22 hours ago · USGS 04146063 |
22 cfs | 1.23 ft | · | 68°F | 768 ft | Flint |
|
Rabbit River Near Hopkins, Mi
23 hours ago · USGS 04108600 |
19 cfs | 2.65 ft | · | 70°F | 717 ft | Kalamazoo |
|
Greenwood Diversion Near Greenwood, Mi
23 hours ago · USGS 04057813 |
19 cfs | 1.51 ft | · | 64°F | 1,439 ft | Escanaba |
|
Middle River Rouge Near Garden City, Mi
22 hours ago · USGS 04167000 |
19 cfs | 2.24 ft | · | 71°F | 609 ft | Detroit |
|
Wanadoga Creek Near Battle Creek, Mi
23 hours ago · USGS 04104945 |
17 cfs | 3.23 ft | · | 69°F | 833 ft | Kalamazoo |
|
Maple River At Maple Rapids, Mi
22 hours ago · USGS 04115000 |
17 cfs | 2.31 ft | · | 68°F | 646 ft | Maple |
|
Silver River Near L'Anse, Mi
22 hours ago · USGS 04043150 |
16 cfs | 6.29 ft | · | 69°F | 625 ft | Dead-Kelsey |
|
Black River Near Bessemer, Mi
1 day ago · USGS 04031000 |
16 cfs | 1.90 ft | · | 66°F | 1,186 ft | Black-Presque Isle |
|
Sycamore Creek At Holt Road Near Holt, Mi
23 hours ago · USGS 04112850 |
16 cfs | 2.25 ft | · | 68°F | 856 ft | Upper Grand |
|
Black River Near Jeddo, Mi
23 hours ago · USGS 04159492 |
15 cfs | 2.99 ft | · | 67°F | 664 ft | St. Clair |
|
Sturgeon River Near Sidnaw, Mi
22 hours ago · USGS 04040500 |
15 cfs | 3.23 ft | · | 67°F | 1,228 ft | Sturgeon |
|
South Branch Hog Creek Near Allen, Mi
22 hours ago · USGS 04096515 |
12 cfs | 1.88 ft | · | 69°F | 1,013 ft | St. Joseph |
|
River Rouge At Southfield, Mi
22 hours ago · USGS 04166100 |
12 cfs | 3.55 ft | 72°F | 70°F | 618 ft | Detroit |
|
North Branch Clinton River Near Mt. Clemens, Mi
23 hours ago · USGS 04164500 |
11 cfs | 4.08 ft | · | 70°F | 584 ft | Clinton |
|
Fish Creek Near Crystal, Mi
23 hours ago · USGS 04115265 |
11 cfs | 1.95 ft | · | 68°F | 802 ft | Maple |
|
Middle Branch Escanaba River At Humboldt, Mi
22 hours ago · USGS 04057800 |
10 cfs | 1.80 ft | 65°F | 64°F | 1,526 ft | Escanaba |
|
West Fork Portage Creek At Kalamazoo, Mi
23 hours ago · USGS 04106400 |
9 cfs | 2.45 ft | · | 70°F | 883 ft | Kalamazoo |
|
West Fork Portage Creek Near Oshtemo, Mi
22 hours ago · USGS 04106320 |
8 cfs | 1.59 ft | · | 69°F | 875 ft | Kalamazoo |
|
East Branch Pine River Near Tustin, Mi
22 hours ago · USGS 04124500 |
8 cfs | 2.32 ft | · | 65°F | 1,149 ft | Manistee |
|
Kearsley Creek Near Davison, Mi
23 hours ago · USGS 04148140 |
8 cfs | 3.06 ft | · | 68°F | 759 ft | Flint |
|
Belle River At Memphis, Mi
22 hours ago · USGS 04160600 |
8 cfs | 1.02 ft | · | 67°F | 713 ft | St. Clair |
|
Schweitzer Creek Near Palmer, Mi
23 hours ago · USGS 04058200 |
7 cfs | 2.94 ft | · | 64°F | 1,277 ft | Escanaba |
|
Black River Near Garnet, Mi
22 hours ago · USGS 04046000 |
7 cfs | 2.43 ft | · | 67°F | 655 ft | Brevoort-Millecoquins |
|
Upper River Rouge At Farmington, Mi
22 hours ago · USGS 04166300 |
7 cfs | 2.98 ft | · | 70°F | 692 ft | Detroit |
|
Middle Branch Clinton River At Macomb, Mi
23 hours ago · USGS 04164800 |
7 cfs | 5.93 ft | · | 68°F | 610 ft | Clinton |
|
Macatawa River At State Road Near Zeeland, Mi
23 hours ago · USGS 04108800 |
5 cfs | 1.97 ft | · | 70°F | 598 ft | Black-Macatawa |
|
Mill Creek Near Avoca, Mi
23 hours ago · USGS 04159900 |
4 cfs | · | · | 66°F | 714 ft | St. Clair |
|
Bear Creek Near Muskegon, Mi
22 hours ago · USGS 04122100 |
4 cfs | 10.48 ft | · | 69°F | 609 ft | Muskegon |
|
East Pond Creek At Romeo, Mi
23 hours ago · USGS 04164100 |
4 cfs | 1.00 ft | · | 68°F | 778 ft | Clinton |
|
Malletts Creek At Ann Arbor, Mi
22 hours ago · USGS 04174518 |
2 cfs | 3.11 ft | · | 69°F | 749 ft | Huron |
|
Plum Brook At Utica, Mi
22 hours ago · USGS 04163400 |
2 cfs | 1.96 ft | · | 70°F | 633 ft | Clinton |
|
Cisco Branch Ontonagon R At Cisco Lake Outlet, Mi
1 day ago · USGS 04037500 |
1 cfs | 3.92 ft | · | 68°F | 1,688 ft | Ontonagon |
|
Farmers Creek Near Lapeer, Mi
23 hours ago · USGS 04146000 |
1 cfs | 14.98 ft | · | 68°F | 827 ft | Flint |
|
Ecorse River At Dearborn Heights, Mi
23 hours ago · USGS 04168580 |
1 cfs | 2.20 ft | · | 70°F | 611 ft | Detroit |
|
Sloan Creek Near Williamston, Mi
23 hours ago · USGS 04112000 |
0 cfs | 1.36 ft | · | 68°F | 870 ft | Upper Grand |
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Flow report FAQ
About Michigan streamflow
What are river levels like in Michigan right now?
As of August 17, 2026, Michigan rivers are running at 91% of normal across 123 USGS streamgauges, and the St. Joseph River At Niles is reporting the highest discharge at 2,750 cfs. The full sortable gauge table is below.
Which Michigan river is running highest right now?
As of August 17, 2026, the highest discharge in Michigan is 2,750 cfs on the St. Joseph River At Niles. See the sortable gauge table for the full statewide ranking.
Are Michigan rivers high or low right now?
Compare the statewide percent-of-normal on this page: above 100% means Michigan rivers are running higher than the seasonal average for the date, below 100% means lower (a dry spell or drought). Each gauge also shows its own percent of median.
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.
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