Michigan River Levels & Streamflow
As of Sep 11, 2026, Michigan rivers are running at 102% of normal across 125 USGS gauges — the highest is 3,010 cfs on the Grand River At Grand Rapids. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Michigan.
Streamflow levels across Michigan are currently 102% of normal, with the Grand River At Grand Rapids reporting the highest discharge in the state at 3,010 cfs and a gauge stage of 3.08 ft.
Meanwhile, the Kalamazoo River Near Battle Creek is seeing a spike today — up 29% 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.
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 3.08 ft
Biggest 24h spike
Now 878 cfs
Network coverage
USGS gauges feeding 0 named rivers in Michigan.
Where every gauge actually sits
One dot per Michigan streamgauge, placed by its own percent of normal. The state average is a single line through all of it.
Percent of normal compares today's discharge with the historical average for this calendar day. Tap any dot to open that gauge.
Michigan streamflow, three water years
Statewide percent of normal, every day since Sep 2023. The dotted line is normal.
799 daily readings from 125 reporting gauges. Percent of normal is today's statewide discharge against the historical average for the same calendar day — 100% is normal, not "good". The axis tops out at 175%: 14 readings above that — including the 250% peak in Apr 2026 — are drawn along the top edge, so a few flood days cannot flatten three years of everything else. The line breaks in 2 places where the record skips more than five days — those are gaps in reporting, not readings of zero.
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 |
|---|---|---|---|---|---|---|
|
Grand River At Grand Rapids, Mi
1 day ago · USGS 04119000 |
2,930 cfs | 2.99 ft | · | 62°F | 587 ft | Lower Grand |
|
St. Joseph River At Niles, Mi
1 day ago · USGS 04101500 |
2,170 cfs | 5.18 ft | 75°F | 66°F | 664 ft | St. Joseph |
|
Grand River At Ionia, Mi
1 day ago · USGS 04116000 |
1,540 cfs | 9.79 ft | · | 60°F | 620 ft | Lower Grand |
|
Manistee River Near Wellston, Mi
1 day ago · USGS 04125550 |
1,540 cfs | 8.72 ft | 67°F | 56°F | 621 ft | Manistee |
|
Menominee River At Koss, Mi
1 day ago · USGS 04066800 |
1,300 cfs | 9.92 ft | · | 50°F | 663 ft | Menominee |
|
Menominee River Near Vulcan, Mi
1 day ago · USGS 04065722 |
1,260 cfs | 5.19 ft | · | 50°F | 807 ft | Menominee |
|
Kalamazoo River At New Richmond, Mi
1 day ago · USGS 04108660 |
1,260 cfs | 10.67 ft | 74°F | 64°F | 605 ft | Kalamazoo |
|
Au Sable River Near Curtisville, Mi
1 day ago · USGS 04137005 |
1,260 cfs | 8.42 ft | 67°F | 57°F | 803 ft | Au Sable |
|
Au Sable River Near Au Sable, Mi
1 day ago · USGS 04137500 |
1,200 cfs | 8.59 ft | 72°F | 59°F | 587 ft | Au Sable |
|
Menominee River At White Rapids Dam Near Banat, Mi
1 day ago · USGS 04066030 |
1,130 cfs | 6.34 ft | · | 50°F | 689 ft | Menominee |
|
Menominee River Below Pemene Creek Near Pembine, Mi
1 day ago · USGS 04066003 |
1,130 cfs | 7.06 ft | · | 50°F | 748 ft | Menominee |
|
Grand River At Portland, Mi
1 day ago · USGS 04114000 |
1,130 cfs | 7.06 ft | · | 61°F | 719 ft | Upper Grand |
|
Au Sable River Near Mc Kinley, Mi
1 day ago · USGS 04136900 |
1,130 cfs | 7.63 ft | 65°F | 57°F | 853 ft | Au Sable |
|
Muskegon River Near Croton, Mi
1 day ago · USGS 04121970 |
1,120 cfs | 4.55 ft | 71°F | 58°F | 685 ft | Muskegon |
|
Manistee River Near Mesick, Mi
1 day ago · USGS 04124200 |
1,110 cfs | 3.62 ft | 66°F | 55°F | 754 ft | Manistee |
|
Manistee River Near Sherman, Mi
1 day ago · USGS 04124000 |
974 cfs | 11.93 ft | 62°F | 55°F | 820 ft | Manistee |
|
Au Sable River At Mio, Mi
1 day ago · USGS 04136500 |
973 cfs | 3.10 ft | 65°F | 56°F | 946 ft | Au Sable |
|
Kalamazoo River At Comstock, Mi
1 day ago · USGS 04106000 |
946 cfs | 4.52 ft | · | 66°F | 792 ft | Kalamazoo |
|
Au Sable River Near Red Oak, Mi
1 day ago · USGS 04136000 |
850 cfs | 3.23 ft | 64°F | 56°F | 1,008 ft | Au Sable |
|
Menominee River Near Florence, Mi
1 day ago · USGS 04063000 |
780 cfs | 3.22 ft | · | 48°F | 1,118 ft | Brule |
|
St. Joseph River At Mottville, Mi
6 days ago · USGS 04099000 |
746 cfs | 2.41 ft | · | 69°F | 780 ft | St. Joseph |
|
Kalamazoo River Near Battle Creek, Mi
1 day ago · USGS 04105500 |
733 cfs | 3.49 ft | · | 67°F | 804 ft | Kalamazoo |
|
Tittabawassee River At Midland, Mi
1 day ago · USGS 04156000 |
640 cfs | 9.48 ft | · | 58°F | 586 ft | Tittabawassee |
|
Clinton River At Moravian Drive At Mt. Clemens, Mi
1 day ago · USGS 04165500 |
634 cfs | 6.89 ft | 72°F | 67°F | 574 ft | Clinton |
|
St. Joseph River At Three Rivers, Mi
1 day ago · USGS 04097500 |
629 cfs | 3.19 ft | · | 65°F | 800 ft | St. Joseph |
|
Grand River At Lansing, Mi
1 day ago · USGS 04113000 |
621 cfs | 3.66 ft | · | 62°F | 808 ft | Upper Grand |
|
Muskegon River At Evart, Mi
1 day ago · USGS 04121500 |
539 cfs | 6.95 ft | · | 53°F | 997 ft | Muskegon |
|
Manistique River Near Manistique, Mi
1 day ago · USGS 04056500 |
523 cfs | 2.52 ft | · | 49°F | 617 ft | Manistique |
|
Huron River At Ann Arbor, Mi
1 day ago · USGS 04174500 |
511 cfs | 12.73 ft | 64°F | 67°F | 758 ft | Huron |
|
Shiawassee River At Owosso, Mi
1 day ago · USGS 04144500 |
506 cfs | 3.33 ft | · | 65°F | 695 ft | Shiawassee |
|
Ontonagon River Near Rockland, Mi
1 day ago · USGS 04040000 |
503 cfs | 5.28 ft | 32°F | 50°F | 670 ft | Ontonagon |
|
Clinton River Near Fraser, Mi
1 day ago · USGS 04164000 |
483 cfs | 7.50 ft | · | 65°F | 586 ft | Clinton |
|
Pere Marquette River At Scottville, Mi
1 day ago · USGS 04122500 |
455 cfs | 1.02 ft | · | 59°F | 625 ft | Pere Marquette-White |
|
Paw Paw River At Riverside, Mi
1 day ago · USGS 04102500 |
406 cfs | 6.51 ft | · | 66°F | 610 ft | St. Joseph |
|
Kalamazoo River At Marshall, Mi
1 day ago · USGS 04103500 |
358 cfs | 4.52 ft | · | 66°F | 882 ft | Kalamazoo |
|
River Raisin Near Monroe, Mi
1 day ago · USGS 04176500 |
342 cfs | 2.84 ft | 67°F | 65°F | 618 ft | Raisin |
|
Thunder Bay River At Herron Road Near Bolton, Mi
1 day ago · USGS 04133501 |
308 cfs | 11.53 ft | · | 57°F | 704 ft | Thunder Bay |
|
Sturgeon River At Wolverine, Mi
1 day ago · USGS 04127997 |
301 cfs | 3.26 ft | · | 58°F | 778 ft | Cheboygan |
|
Battle Creek At Battle Creek, Mi
1 day ago · USGS 04105000 |
293 cfs | 1.21 ft | · | 63°F | 824 ft | Kalamazoo |
|
Tahquamenon River Near Paradise, Mi
1 day ago · USGS 04045500 |
291 cfs | 3.29 ft | · | 50°F | 729 ft | Tahquamenon |
|
Thornapple River Near Hastings, Mi
1 day ago · USGS 04117500 |
288 cfs | 3.60 ft | · | 62°F | 803 ft | Thornapple |
|
Michigamme River Near Crystal Falls, Mi
1 day ago · USGS 04062500 |
281 cfs | 2.79 ft | · | 46°F | 1,305 ft | Michigamme |
|
Escanaba River At Cornell, Mi
1 day ago · USGS 04059000 |
269 cfs | 1.37 ft | 64°F | 49°F | 735 ft | Escanaba |
|
Huron River Near Hamburg, Mi
1 day ago · USGS 04172000 |
266 cfs | 5.65 ft | · | 66°F | 852 ft | Huron |
|
White River Near Whitehall, Mi
1 day ago · USGS 04122200 |
259 cfs | 1.06 ft | · | 60°F | 619 ft | Pere Marquette-White |
|
Paint River Nr Alpha, Mi
1 day ago · USGS 04062000 |
242 cfs | 3.25 ft | · | 47°F | 1,271 ft | Brule |
|
Rifle River Near Sterling, Mi
1 day ago · USGS 04142000 |
227 cfs | 1.70 ft | 53°F | 61°F | 639 ft | Au Gres-Rifle |
|
Jordan River Near East Jordan, Mi
1 day ago · USGS 04127800 |
220 cfs | 3.72 ft | · | 55°F | 629 ft | Boardman-Charlevoix |
|
Pine River At High School Bridge Nr Hoxeyville, Mi
1 day ago · USGS 04125460 |
218 cfs | 3.96 ft | 58°F | 58°F | 856 ft | Manistee |
|
South Branch Au Sable River Near Luzerne, Mi
1 day ago · USGS 04135700 |
218 cfs | 4.92 ft | 62°F | 54°F | 1,070 ft | Au Sable |
|
Flint River Near Flint, Mi
1 day ago · USGS 04148500 |
212 cfs | 3.54 ft | · | 61°F | 684 ft | Flint |
|
Clinton River At Sterling Heights, Mi
1 day ago · USGS 04161820 |
203 cfs | 8.14 ft | 71°F | 65°F | 612 ft | Clinton |
|
Dowagiac River At Sumnerville, Mi
1 day ago · USGS 04101800 |
196 cfs | 5.18 ft | · | 65°F | 716 ft | St. Joseph |
|
Brule River At Us Highway 2 Near Florence, Mi
1 day ago · USGS 04060993 |
195 cfs | 3.51 ft | · | 47°F | 1,241 ft | Brule |
|
River Raisin Near Adrian, Mi
1 day ago · USGS 04176000 |
192 cfs | 4.73 ft | · | 65°F | 699 ft | Raisin |
|
Tobacco River At Glidden Road At Beaverton, Mi
1 day ago · USGS 04152500 |
187 cfs | 2.36 ft | · | 55°F | 715 ft | Tittabawassee |
|
River Rouge At Detroit, Mi
1 day ago · USGS 04166500 |
186 cfs | 6.84 ft | 70°F | 66°F | 591 ft | Detroit |
|
Chippewa River Near Mount Pleasant, Mi
1 day ago · USGS 04154000 |
160 cfs | 3.31 ft | · | 57°F | 730 ft | Pine |
|
Platte River At Honor, Mi
1 day ago · USGS 04126740 |
156 cfs | 1.37 ft | · | 60°F | 606 ft | Betsie-Platte |
|
Grand River At Jackson, Mi
1 day ago · USGS 04109000 |
145 cfs | 9.94 ft | · | 66°F | 911 ft | Upper Grand |
|
Little Muskegon River Near Oak Grove, Mi
1 day ago · USGS 04121944 |
145 cfs | 3.09 ft | 66°F | 58°F | 756 ft | Muskegon |
|
Flint River Near Otisville, Mi
1 day ago · USGS 04147500 |
139 cfs | 3.01 ft | · | 60°F | 728 ft | Flint |
|
Sturgeon River Near Alston, Mi
1 day ago · USGS 04041500 |
137 cfs | 3.94 ft | 68°F | 48°F | 735 ft | Sturgeon |
|
Middle River Rouge Near Garden City, Mi
1 day ago · USGS 04167000 |
120 cfs | 4.25 ft | · | 66°F | 609 ft | Detroit |
|
Rogue River Near Rockford, Mi
1 day ago · USGS 04118500 |
119 cfs | 3.75 ft | · | 60°F | 665 ft | Lower Grand |
|
Boardman R Above Brown Bridge Road Nr Mayfield, Mi
1 day ago · USGS 04126970 |
119 cfs | 3.24 ft | · | 54°F | 826 ft | Boardman-Charlevoix |
|
Red Cedar River At East Lansing, Mi
1 day ago · USGS 04112500 |
118 cfs | 3.54 ft | · | 62°F | 829 ft | Upper Grand |
|
Looking Glass River Near Eagle, Mi
1 day ago · USGS 04114498 |
116 cfs | 3.20 ft | · | 65°F | 754 ft | Upper Grand |
|
Cass River At Frankenmuth, Mi
1 day ago · USGS 04151500 |
110 cfs | 3.93 ft | · | 59°F | 591 ft | Cass |
|
Pine River Near Midland, Mi
1 day ago · USGS 04155500 |
105 cfs | 2.74 ft | · | 58°F | 628 ft | Pine |
|
Pigeon R At Sturgeon Valley Rd Near Vanderbilt, Mi
1 day ago · USGS 04128990 |
101 cfs | 2.45 ft | · | 56°F | 914 ft | Cheboygan |
|
Lower River Rouge At Dearborn, Mi
1 day ago · USGS 04168400 |
98 cfs | 3.68 ft | 71°F | 66°F | 582 ft | Detroit |
|
Maple River At Maple Rapids, Mi
1 day ago · USGS 04115000 |
96 cfs | 3.52 ft | · | 60°F | 646 ft | Maple |
|
Middle Branch Ontonagon River Near Paulding, Mi
1 day ago · USGS 04033000 |
96 cfs | 4.16 ft | · | 45°F | 1,500 ft | Ontonagon |
|
River Rouge At Southfield, Mi
1 day ago · USGS 04166100 |
90 cfs | 5.13 ft | 70°F | 65°F | 618 ft | Detroit |
|
Middle Branch Escanaba River Nr Princeton, Mi
1 day ago · USGS 04058100 |
82 cfs | 1.53 ft | · | 49°F | 1,114 ft | Escanaba |
|
St. Joseph River At Burlington, Mi
1 day ago · USGS 04096405 |
77 cfs | 3.31 ft | · | 67°F | 906 ft | St. Joseph |
|
Clinton River At Auburn Hills, Mi
1 day ago · USGS 04161000 |
77 cfs | 1.42 ft | · | 64°F | 846 ft | Clinton |
|
Clam River At Vogel Center, Mi
1 day ago · USGS 04121300 |
69 cfs | 2.73 ft | · | 56°F | 1,134 ft | Muskegon |
|
Red Cedar River Near Williamston, Mi
1 day ago · USGS 04111379 |
64 cfs | 2.85 ft | · | 66°F | 865 ft | Upper Grand |
|
Mill Creek Near Dexter, Mi
7 days ago · USGS 04173500 |
60 cfs | 6.15 ft | · | 68°F | 856 ft | Huron |
|
Sturgeon River Near Nahma Junction, Mi
1 day ago · USGS 04057510 |
59 cfs | 3.82 ft | · | 48°F | 662 ft | Fishdam-Sturgeon |
|
Iron River At County Hwy-424 At Caspian, Mi
1 day ago · USGS 04060500 |
58 cfs | 4.02 ft | · | 46°F | 1,446 ft | Brule |
|
South Branch Tobacco River Near Beaverton, Mi
1 day ago · USGS 04152238 |
57 cfs | 4.35 ft | · | 55°F | 727 ft | Tittabawassee |
|
Ford River Near Hyde, Mi
1 day ago · USGS 04059500 |
51 cfs | 1.68 ft | 46°F | 50°F | 707 ft | Cedar-Ford |
|
South Branch Flint River Near Columbiaville, Mi
1 day ago · USGS 04146063 |
51 cfs | 1.50 ft | · | 60°F | 768 ft | Flint |
|
Prairie River Near Nottawa, Mi
1 day ago · USGS 04097540 |
46 cfs | 3.14 ft | 36°F | 65°F | 872 ft | St. Joseph |
|
Saline River Near Saline, Mi
1 day ago · USGS 04176400 |
43 cfs | 5.16 ft | · | 64°F | 711 ft | Raisin |
|
Portage Creek At Kalamazoo, Mi
1 day ago · USGS 04106500 |
41 cfs | 2.25 ft | · | 67°F | 766 ft | Kalamazoo |
|
South Branch Black River Near Bangor, Mi
1 day ago · USGS 04102700 |
41 cfs | 2.62 ft | · | 64°F | 613 ft | Black-Macatawa |
|
West Branch Ontonagon River Near Bergland, Mi
1 day ago · USGS 04036000 |
39 cfs | 1.31 ft | · | 48°F | 1,304 ft | Ontonagon |
|
Galien River Near Sawyer, Mi
1 day ago · USGS 04096015 |
37 cfs | 6.22 ft | · | 67°F | 614 ft | Little Calumet-Galien |
|
Wanadoga Creek Near Battle Creek, Mi
1 day ago · USGS 04104945 |
35 cfs | 3.84 ft | · | 66°F | 833 ft | Kalamazoo |
|
Sycamore Creek At Holt Road Near Holt, Mi
1 day ago · USGS 04112850 |
35 cfs | 2.81 ft | · | 65°F | 856 ft | Upper Grand |
|
Augusta Creek Near Augusta, Mi
1 day ago · USGS 04105700 |
33 cfs | 1.04 ft | · | 66°F | 817 ft | Kalamazoo |
|
Rabbit River Near Hopkins, Mi
1 day ago · USGS 04108600 |
31 cfs | 3.00 ft | · | 62°F | 717 ft | Kalamazoo |
|
Black River Near Jeddo, Mi
1 day ago · USGS 04159492 |
30 cfs | 3.13 ft | · | 65°F | 664 ft | St. Clair |
|
Greenwood Release Near Greenwood, Mi
1 day ago · USGS 04057814 |
27 cfs | 2.47 ft | · | 47°F | 1,478 ft | Escanaba |
|
Silver River Near L'Anse, Mi
1 day ago · USGS 04043150 |
24 cfs | 6.44 ft | · | 50°F | 625 ft | Dead-Kelsey |
|
North Branch Clinton River Near Mt. Clemens, Mi
1 day ago · USGS 04164500 |
22 cfs | 4.36 ft | · | 67°F | 584 ft | Clinton |
|
Upper River Rouge At Farmington, Mi
1 day ago · USGS 04166300 |
22 cfs | 3.22 ft | · | 65°F | 692 ft | Detroit |
|
Greenwood Diversion Near Greenwood, Mi
1 day ago · USGS 04057813 |
22 cfs | 1.64 ft | · | 47°F | 1,439 ft | Escanaba |
|
Sturgeon River Near Sidnaw, Mi
1 day ago · USGS 04040500 |
21 cfs | 3.36 ft | · | 45°F | 1,228 ft | Sturgeon |
|
Middle Branch Clinton River At Macomb, Mi
1 day ago · USGS 04164800 |
21 cfs | 6.26 ft | · | 66°F | 610 ft | Clinton |
|
Black River Near Bessemer, Mi
1 day ago · USGS 04031000 |
17 cfs | 1.92 ft | · | 45°F | 1,186 ft | Black-Presque Isle |
|
Plum Brook At Utica, Mi
1 day ago · USGS 04163400 |
17 cfs | 2.46 ft | · | 65°F | 633 ft | Clinton |
|
Fish Creek Near Crystal, Mi
1 day ago · USGS 04115265 |
16 cfs | 2.09 ft | · | 59°F | 802 ft | Maple |
|
South Branch Hog Creek Near Allen, Mi
1 day ago · USGS 04096515 |
15 cfs | 1.96 ft | · | 64°F | 1,013 ft | St. Joseph |
|
Belle River At Memphis, Mi
1 day ago · USGS 04160600 |
14 cfs | 1.08 ft | · | 65°F | 713 ft | St. Clair |
|
Mill Creek Near Avoca, Mi
1 day ago · USGS 04159900 |
13 cfs | · | · | 65°F | 714 ft | St. Clair |
|
East Branch Pine River Near Tustin, Mi
1 day ago · USGS 04124500 |
12 cfs | 2.41 ft | · | 52°F | 1,149 ft | Manistee |
|
Malletts Creek At Ann Arbor, Mi
1 day ago · USGS 04174518 |
12 cfs | 3.46 ft | · | 67°F | 749 ft | Huron |
|
Kearsley Creek Near Davison, Mi
1 day ago · USGS 04148140 |
11 cfs | 3.16 ft | · | 65°F | 759 ft | Flint |
|
Farmers Creek Near Lapeer, Mi
1 day ago · USGS 04146000 |
11 cfs | 15.34 ft | · | 65°F | 827 ft | Flint |
|
West Fork Portage Creek At Kalamazoo, Mi
1 day ago · USGS 04106400 |
10 cfs | 2.49 ft | · | 67°F | 883 ft | Kalamazoo |
|
Macatawa River At State Road Near Zeeland, Mi
1 day ago · USGS 04108800 |
10 cfs | 2.31 ft | · | 62°F | 598 ft | Black-Macatawa |
|
West Fork Portage Creek Near Oshtemo, Mi
1 day ago · USGS 04106320 |
10 cfs | 1.67 ft | · | 63°F | 875 ft | Kalamazoo |
|
East Pond Creek At Romeo, Mi
1 day ago · USGS 04164100 |
7 cfs | 1.13 ft | · | 65°F | 778 ft | Clinton |
|
Schweitzer Creek Near Palmer, Mi
1 day ago · USGS 04058200 |
6 cfs | 2.88 ft | · | 48°F | 1,277 ft | Escanaba |
|
Black River Near Garnet, Mi
1 day ago · USGS 04046000 |
6 cfs | 2.38 ft | · | 56°F | 655 ft | Brevoort-Millecoquins |
|
Middle Branch Escanaba River At Humboldt, Mi
1 day ago · USGS 04057800 |
5 cfs | 1.65 ft | 61°F | 46°F | 1,526 ft | Escanaba |
|
Bear Creek Near Muskegon, Mi
1 day ago · USGS 04122100 |
5 cfs | 10.54 ft | · | 61°F | 609 ft | Muskegon |
|
Ecorse River At Dearborn Heights, Mi
1 day ago · USGS 04168580 |
3 cfs | 2.54 ft | · | 66°F | 611 ft | Detroit |
|
Sloan Creek Near Williamston, Mi
1 day ago · USGS 04112000 |
2 cfs | 1.83 ft | · | 66°F | 870 ft | Upper Grand |
|
Cisco Branch Ontonagon R At Cisco Lake Outlet, Mi
1 day ago · USGS 04037500 |
1 cfs | 3.88 ft | · | 46°F | 1,688 ft | Ontonagon |
See every Michigan gauge ranked against normal.
- Percentile rank & % of median for all 125 gauges
- 15-day PULSE forecast on every gauge
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About Michigan streamflow
What are river levels like in Michigan right now?
As of September 11, 2026, Michigan rivers are running at 102% of normal across 125 USGS streamgauges, and the Grand River At Grand Rapids is reporting the highest discharge at 3,010 cfs. The full sortable gauge table is below.
Which Michigan river is running highest right now?
As of September 11, 2026, the highest discharge in Michigan is 3,010 cfs on the Grand River At Grand Rapids. 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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