Michigan River Levels & Streamflow
As of Sep 6, 2026, Michigan rivers are running at 121% of normal across 125 USGS gauges — the highest is 2,210 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 121% of normal, with the Grand River At Grand Rapids reporting the highest discharge in the state at 2,210 cfs and a gauge stage of 2.16 ft.
Meanwhile, the River Raisin Near Monroe is seeing a spike today — up 317% 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 2.16 ft
Biggest 24h spike
Now 846 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 |
2,210 cfs | 2.16 ft | · | 66°F | 587 ft | Lower Grand |
|
Grand River At Ionia, Mi
1 day ago · USGS 04116000 |
1,560 cfs | 9.83 ft | · | 66°F | 620 ft | Lower Grand |
|
Manistee River Near Wellston, Mi
1 day ago · USGS 04125550 |
1,510 cfs | 8.70 ft | 68°F | 64°F | 621 ft | Manistee |
|
St. Joseph River At Niles, Mi
1 day ago · USGS 04101500 |
1,470 cfs | 4.71 ft | 78°F | 70°F | 664 ft | St. Joseph |
|
Muskegon River Near Croton, Mi
1 day ago · USGS 04121970 |
1,450 cfs | 4.93 ft | 72°F | 65°F | 685 ft | Muskegon |
|
Au Sable River Near Au Sable, Mi
1 day ago · USGS 04137500 |
1,420 cfs | 8.95 ft | 72°F | 76°F | 587 ft | Au Sable |
|
Menominee River At Koss, Mi
1 day ago · USGS 04066800 |
1,350 cfs | 10.01 ft | · | 58°F | 663 ft | Menominee |
|
Au Sable River Near Curtisville, Mi
1 day ago · USGS 04137005 |
1,310 cfs | 8.51 ft | 66°F | 77°F | 803 ft | Au Sable |
|
Manistee River Near Mesick, Mi
1 day ago · USGS 04124200 |
1,270 cfs | 3.86 ft | 66°F | 64°F | 754 ft | Manistee |
|
Kalamazoo River At New Richmond, Mi
1 day ago · USGS 04108660 |
1,220 cfs | 10.60 ft | 76°F | 66°F | 605 ft | Kalamazoo |
|
Menominee River At White Rapids Dam Near Banat, Mi
1 day ago · USGS 04066030 |
1,190 cfs | 6.39 ft | · | 58°F | 689 ft | Menominee |
|
Au Sable River Near Mc Kinley, Mi
1 day ago · USGS 04136900 |
1,190 cfs | 7.72 ft | 64°F | 77°F | 853 ft | Au Sable |
|
Manistee River Near Sherman, Mi
1 day ago · USGS 04124000 |
1,180 cfs | 12.52 ft | 63°F | 63°F | 820 ft | Manistee |
|
Menominee River Near Vulcan, Mi
1 day ago · USGS 04065722 |
1,100 cfs | 5.01 ft | · | 58°F | 807 ft | Menominee |
|
Clinton River At Moravian Drive At Mt. Clemens, Mi
1 day ago · USGS 04165500 |
1,060 cfs | 6.59 ft | 73°F | 66°F | 574 ft | Clinton |
|
Menominee River Below Pemene Creek Near Pembine, Mi
1 day ago · USGS 04066003 |
1,050 cfs | 6.96 ft | · | 58°F | 748 ft | Menominee |
|
Au Sable River At Mio, Mi
1 day ago · USGS 04136500 |
1,030 cfs | 3.21 ft | 66°F | 79°F | 946 ft | Au Sable |
|
Au Sable River Near Red Oak, Mi
1 day ago · USGS 04136000 |
911 cfs | 3.33 ft | 64°F | 78°F | 1,008 ft | Au Sable |
|
Tittabawassee River At Midland, Mi
1 day ago · USGS 04156000 |
853 cfs | 9.89 ft | · | 64°F | 586 ft | Tittabawassee |
|
River Raisin Near Monroe, Mi
1 day ago · USGS 04176500 |
846 cfs | 3.80 ft | 67°F | 68°F | 618 ft | Raisin |
|
Grand River At Lansing, Mi
1 day ago · USGS 04113000 |
841 cfs | 4.28 ft | · | 64°F | 808 ft | Upper Grand |
|
Clinton River Near Fraser, Mi
1 day ago · USGS 04164000 |
784 cfs | 8.86 ft | · | 67°F | 586 ft | Clinton |
|
Menominee River Near Florence, Mi
1 day ago · USGS 04063000 |
755 cfs | 3.18 ft | · | 57°F | 1,118 ft | Brule |
|
St. Joseph River At Mottville, Mi
1 day ago · USGS 04099000 |
746 cfs | 2.41 ft | · | 69°F | 780 ft | St. Joseph |
|
St. Joseph River At Three Rivers, Mi
1 day ago · USGS 04097500 |
742 cfs | 3.40 ft | · | 68°F | 800 ft | St. Joseph |
|
River Rouge At Detroit, Mi
1 day ago · USGS 04166500 |
700 cfs | 10.34 ft | 72°F | 66°F | 591 ft | Detroit |
|
Kalamazoo River At Comstock, Mi
1 day ago · USGS 04106000 |
662 cfs | 4.14 ft | · | 66°F | 792 ft | Kalamazoo |
|
Grand River At Portland, Mi
1 day ago · USGS 04114000 |
622 cfs | 6.31 ft | · | 63°F | 719 ft | Upper Grand |
|
Middle River Rouge Near Garden City, Mi
1 day ago · USGS 04167000 |
619 cfs | 8.41 ft | · | 69°F | 609 ft | Detroit |
|
Lower River Rouge At Dearborn, Mi
1 day ago · USGS 04168400 |
599 cfs | 6.59 ft | 73°F | 69°F | 582 ft | Detroit |
|
Muskegon River At Evart, Mi
1 day ago · USGS 04121500 |
555 cfs | 6.98 ft | · | 61°F | 997 ft | Muskegon |
|
Manistique River Near Manistique, Mi
1 day ago · USGS 04056500 |
553 cfs | 2.63 ft | · | 79°F | 617 ft | Manistique |
|
Huron River At Ann Arbor, Mi
1 day ago · USGS 04174500 |
539 cfs | 12.78 ft | 64°F | 69°F | 758 ft | Huron |
|
Ontonagon River Near Rockland, Mi
1 day ago · USGS 04040000 |
512 cfs | 5.30 ft | 32°F | 83°F | 670 ft | Ontonagon |
|
Pere Marquette River At Scottville, Mi
1 day ago · USGS 04122500 |
489 cfs | 1.17 ft | · | 65°F | 625 ft | Pere Marquette-White |
|
Kalamazoo River Near Battle Creek, Mi
1 day ago · USGS 04105500 |
452 cfs | 3.06 ft | · | 66°F | 804 ft | Kalamazoo |
|
Thunder Bay River At Herron Road Near Bolton, Mi
1 day ago · USGS 04133501 |
412 cfs | 11.88 ft | · | 76°F | 704 ft | Thunder Bay |
|
Thornapple River Near Hastings, Mi
1 day ago · USGS 04117500 |
375 cfs | 3.82 ft | · | 64°F | 803 ft | Thornapple |
|
Flint River Near Flint, Mi
1 day ago · USGS 04148500 |
361 cfs | 4.04 ft | · | 65°F | 684 ft | Flint |
|
Clinton River At Sterling Heights, Mi
1 day ago · USGS 04161820 |
361 cfs | 8.95 ft | 73°F | 64°F | 612 ft | Clinton |
|
Rifle River Near Sterling, Mi
1 day ago · USGS 04142000 |
345 cfs | 2.21 ft | 53°F | 77°F | 639 ft | Au Gres-Rifle |
|
Kalamazoo River At Marshall, Mi
1 day ago · USGS 04103500 |
336 cfs | 4.46 ft | · | 65°F | 882 ft | Kalamazoo |
|
Tahquamenon River Near Paradise, Mi
1 day ago · USGS 04045500 |
321 cfs | 3.38 ft | · | 79°F | 729 ft | Tahquamenon |
|
Escanaba River At Cornell, Mi
1 day ago · USGS 04059000 |
309 cfs | 1.42 ft | 65°F | 80°F | 735 ft | Escanaba |
|
Paw Paw River At Riverside, Mi
1 day ago · USGS 04102500 |
291 cfs | 5.62 ft | · | 69°F | 610 ft | St. Joseph |
|
Red Cedar River At East Lansing, Mi
1 day ago · USGS 04112500 |
280 cfs | 4.04 ft | · | 64°F | 829 ft | Upper Grand |
|
River Raisin Near Adrian, Mi
1 day ago · USGS 04176000 |
279 cfs | 5.45 ft | · | 68°F | 699 ft | Raisin |
|
Michigamme River Near Crystal Falls, Mi
1 day ago · USGS 04062500 |
276 cfs | 2.77 ft | · | 55°F | 1,305 ft | Michigamme |
|
White River Near Whitehall, Mi
1 day ago · USGS 04122200 |
262 cfs | 1.08 ft | · | 67°F | 619 ft | Pere Marquette-White |
|
Shiawassee River At Owosso, Mi
1 day ago · USGS 04144500 |
254 cfs | 2.63 ft | · | 65°F | 695 ft | Shiawassee |
|
Chippewa River Near Mount Pleasant, Mi
1 day ago · USGS 04154000 |
250 cfs | 3.61 ft | · | 64°F | 730 ft | Pine |
|
Pine River At High School Bridge Nr Hoxeyville, Mi
1 day ago · USGS 04125460 |
249 cfs | 4.09 ft | 59°F | 63°F | 856 ft | Manistee |
|
Cass River At Frankenmuth, Mi
1 day ago · USGS 04151500 |
224 cfs | 4.61 ft | · | 63°F | 591 ft | Cass |
|
Sturgeon River At Wolverine, Mi
1 day ago · USGS 04127997 |
219 cfs | 2.88 ft | · | 79°F | 778 ft | Cheboygan |
|
Grand River At Jackson, Mi
1 day ago · USGS 04109000 |
218 cfs | 10.77 ft | · | 64°F | 911 ft | Upper Grand |
|
South Branch Au Sable River Near Luzerne, Mi
1 day ago · USGS 04135700 |
218 cfs | 4.92 ft | 63°F | 78°F | 1,070 ft | Au Sable |
|
Paint River Nr Alpha, Mi
1 day ago · USGS 04062000 |
214 cfs | 3.17 ft | · | 56°F | 1,271 ft | Brule |
|
Looking Glass River Near Eagle, Mi
1 day ago · USGS 04114498 |
212 cfs | 3.73 ft | · | 63°F | 754 ft | Upper Grand |
|
Red Cedar River Near Williamston, Mi
1 day ago · USGS 04111379 |
203 cfs | 4.48 ft | · | 66°F | 865 ft | Upper Grand |
|
Flint River Near Otisville, Mi
1 day ago · USGS 04147500 |
203 cfs | 3.42 ft | · | 64°F | 728 ft | Flint |
|
Clinton River At Auburn Hills, Mi
1 day ago · USGS 04161000 |
200 cfs | 2.11 ft | · | 66°F | 846 ft | Clinton |
|
Black River Near Jeddo, Mi
1 day ago · USGS 04159492 |
195 cfs | 3.82 ft | · | 64°F | 664 ft | St. Clair |
|
Tobacco River At Glidden Road At Beaverton, Mi
1 day ago · USGS 04152500 |
193 cfs | 2.39 ft | · | 57°F | 715 ft | Tittabawassee |
|
Brule River At Us Highway 2 Near Florence, Mi
1 day ago · USGS 04060993 |
192 cfs | 3.50 ft | · | 57°F | 1,241 ft | Brule |
|
Dowagiac River At Sumnerville, Mi
1 day ago · USGS 04101800 |
186 cfs | 5.11 ft | · | 70°F | 716 ft | St. Joseph |
|
Rogue River Near Rockford, Mi
1 day ago · USGS 04118500 |
186 cfs | 4.13 ft | · | 67°F | 665 ft | Lower Grand |
|
Jordan River Near East Jordan, Mi
1 day ago · USGS 04127800 |
183 cfs | 3.47 ft | · | 81°F | 629 ft | Boardman-Charlevoix |
|
Pine River Near Midland, Mi
1 day ago · USGS 04155500 |
183 cfs | 3.01 ft | · | 64°F | 628 ft | Pine |
|
River Rouge At Southfield, Mi
1 day ago · USGS 04166100 |
182 cfs | 6.37 ft | 71°F | 68°F | 618 ft | Detroit |
|
Little Muskegon River Near Oak Grove, Mi
1 day ago · USGS 04121944 |
179 cfs | 3.23 ft | 68°F | 65°F | 756 ft | Muskegon |
|
Huron River Near Hamburg, Mi
1 day ago · USGS 04172000 |
175 cfs | 5.11 ft | · | 67°F | 852 ft | Huron |
|
Platte River At Honor, Mi
1 day ago · USGS 04126740 |
163 cfs | 1.42 ft | · | 65°F | 606 ft | Betsie-Platte |
|
Sturgeon River Near Alston, Mi
1 day ago · USGS 04041500 |
146 cfs | 3.84 ft | 66°F | 79°F | 735 ft | Sturgeon |
|
Saline River Near Saline, Mi
1 day ago · USGS 04176400 |
146 cfs | 6.48 ft | · | 67°F | 711 ft | Raisin |
|
Boardman R Above Brown Bridge Road Nr Mayfield, Mi
1 day ago · USGS 04126970 |
137 cfs | 3.38 ft | · | 62°F | 826 ft | Boardman-Charlevoix |
|
Sycamore Creek At Holt Road Near Holt, Mi
1 day ago · USGS 04112850 |
122 cfs | 5.17 ft | · | 66°F | 856 ft | Upper Grand |
|
Middle Branch Ontonagon River Near Paulding, Mi
1 day ago · USGS 04033000 |
113 cfs | 4.31 ft | · | 81°F | 1,500 ft | Ontonagon |
|
South Branch Flint River Near Columbiaville, Mi
1 day ago · USGS 04146063 |
108 cfs | 1.86 ft | · | 63°F | 768 ft | Flint |
|
Battle Creek At Battle Creek, Mi
1 day ago · USGS 04105000 |
94 cfs | · | · | 66°F | 824 ft | Kalamazoo |
|
Middle Branch Escanaba River Nr Princeton, Mi
1 day ago · USGS 04058100 |
92 cfs | 1.59 ft | · | 76°F | 1,114 ft | Escanaba |
|
Clam River At Vogel Center, Mi
1 day ago · USGS 04121300 |
86 cfs | 2.89 ft | · | 59°F | 1,134 ft | Muskegon |
|
Pigeon R At Sturgeon Valley Rd Near Vanderbilt, Mi
1 day ago · USGS 04128990 |
76 cfs | 2.24 ft | · | 78°F | 914 ft | Cheboygan |
|
Portage Creek At Kalamazoo, Mi
1 day ago · USGS 04106500 |
75 cfs | 2.63 ft | · | 69°F | 766 ft | Kalamazoo |
|
South Branch Tobacco River Near Beaverton, Mi
1 day ago · USGS 04152238 |
66 cfs | 4.48 ft | · | 64°F | 727 ft | Tittabawassee |
|
St. Joseph River At Burlington, Mi
1 day ago · USGS 04096405 |
64 cfs | 3.19 ft | · | 66°F | 906 ft | St. Joseph |
|
Silver River Near L'Anse, Mi
1 day ago · USGS 04043150 |
63 cfs | 6.81 ft | · | 78°F | 625 ft | Dead-Kelsey |
|
Sturgeon River Near Nahma Junction, Mi
1 day ago · USGS 04057510 |
62 cfs | 3.85 ft | · | 80°F | 662 ft | Fishdam-Sturgeon |
|
Ford River Near Hyde, Mi
1 day ago · USGS 04059500 |
62 cfs | 1.75 ft | 46°F | 79°F | 707 ft | Cedar-Ford |
|
Mill Creek Near Dexter, Mi
2 days ago · USGS 04173500 |
60 cfs | 6.15 ft | · | 68°F | 856 ft | Huron |
|
Iron River At County Hwy-424 At Caspian, Mi
1 day ago · USGS 04060500 |
59 cfs | 4.03 ft | · | 56°F | 1,446 ft | Brule |
|
Rabbit River Near Hopkins, Mi
1 day ago · USGS 04108600 |
58 cfs | 3.68 ft | · | 66°F | 717 ft | Kalamazoo |
|
Macatawa River At State Road Near Zeeland, Mi
1 day ago · USGS 04108800 |
57 cfs | 3.53 ft | · | 68°F | 598 ft | Black-Macatawa |
|
Upper River Rouge At Farmington, Mi
1 day ago · USGS 04166300 |
53 cfs | 3.47 ft | · | 65°F | 692 ft | Detroit |
|
Maple River At Maple Rapids, Mi
1 day ago · USGS 04115000 |
47 cfs | 2.88 ft | · | 65°F | 646 ft | Maple |
|
Prairie River Near Nottawa, Mi
1 day ago · USGS 04097540 |
46 cfs | 3.13 ft | 36°F | 68°F | 872 ft | St. Joseph |
|
South Branch Black River Near Bangor, Mi
1 day ago · USGS 04102700 |
45 cfs | 2.73 ft | · | 69°F | 613 ft | Black-Macatawa |
|
West Branch Ontonagon River Near Bergland, Mi
1 day ago · USGS 04036000 |
41 cfs | 1.36 ft | · | 80°F | 1,304 ft | Ontonagon |
|
Galien River Near Sawyer, Mi
1 day ago · USGS 04096015 |
39 cfs | 6.26 ft | · | 70°F | 614 ft | Little Calumet-Galien |
|
Malletts Creek At Ann Arbor, Mi
1 day ago · USGS 04174518 |
38 cfs | 3.81 ft | · | 68°F | 749 ft | Huron |
|
Augusta Creek Near Augusta, Mi
1 day ago · USGS 04105700 |
37 cfs | 1.09 ft | · | 68°F | 817 ft | Kalamazoo |
|
Belle River At Memphis, Mi
1 day ago · USGS 04160600 |
37 cfs | 1.43 ft | · | 64°F | 713 ft | St. Clair |
|
Wanadoga Creek Near Battle Creek, Mi
1 day ago · USGS 04104945 |
35 cfs | 3.84 ft | · | 65°F | 833 ft | Kalamazoo |
|
North Branch Clinton River Near Mt. Clemens, Mi
1 day ago · USGS 04164500 |
34 cfs | 4.52 ft | · | 66°F | 584 ft | Clinton |
|
Kearsley Creek Near Davison, Mi
1 day ago · USGS 04148140 |
30 cfs | 3.64 ft | · | 64°F | 759 ft | Flint |
|
Middle Branch Clinton River At Macomb, Mi
1 day ago · USGS 04164800 |
29 cfs | 6.36 ft | · | 62°F | 610 ft | Clinton |
|
Greenwood Release Near Greenwood, Mi
1 day ago · USGS 04057814 |
27 cfs | 2.47 ft | · | 76°F | 1,478 ft | Escanaba |
|
Fish Creek Near Crystal, Mi
1 day ago · USGS 04115265 |
26 cfs | 2.48 ft | · | 62°F | 802 ft | Maple |
|
Mill Creek Near Avoca, Mi
1 day ago · USGS 04159900 |
25 cfs | 1.21 ft | · | 63°F | 714 ft | St. Clair |
|
Black River Near Bessemer, Mi
1 day ago · USGS 04031000 |
24 cfs | 1.99 ft | · | 62°F | 1,186 ft | Black-Presque Isle |
|
Greenwood Diversion Near Greenwood, Mi
1 day ago · USGS 04057813 |
22 cfs | 1.65 ft | · | 76°F | 1,439 ft | Escanaba |
|
Plum Brook At Utica, Mi
1 day ago · USGS 04163400 |
21 cfs | 2.55 ft | · | 64°F | 633 ft | Clinton |
|
Sturgeon River Near Sidnaw, Mi
1 day ago · USGS 04040500 |
21 cfs | 3.35 ft | · | 80°F | 1,228 ft | Sturgeon |
|
Ecorse River At Dearborn Heights, Mi
1 day ago · USGS 04168580 |
20 cfs | 3.38 ft | · | 69°F | 611 ft | Detroit |
|
South Branch Hog Creek Near Allen, Mi
1 day ago · USGS 04096515 |
19 cfs | 2.07 ft | · | 66°F | 1,013 ft | St. Joseph |
|
Farmers Creek Near Lapeer, Mi
1 day ago · USGS 04146000 |
18 cfs | 15.47 ft | · | 63°F | 827 ft | Flint |
|
East Branch Pine River Near Tustin, Mi
1 day ago · USGS 04124500 |
13 cfs | 2.42 ft | · | 58°F | 1,149 ft | Manistee |
|
West Fork Portage Creek Near Oshtemo, Mi
1 day ago · USGS 04106320 |
11 cfs | 1.70 ft | · | 69°F | 875 ft | Kalamazoo |
|
West Fork Portage Creek At Kalamazoo, Mi
1 day ago · USGS 04106400 |
11 cfs | 2.50 ft | · | 69°F | 883 ft | Kalamazoo |
|
Middle Branch Escanaba River At Humboldt, Mi
1 day ago · USGS 04057800 |
8 cfs | 1.73 ft | 62°F | 75°F | 1,526 ft | Escanaba |
|
Sloan Creek Near Williamston, Mi
1 day ago · USGS 04112000 |
7 cfs | 2.31 ft | · | 66°F | 870 ft | Upper Grand |
|
East Pond Creek At Romeo, Mi
1 day ago · USGS 04164100 |
7 cfs | 1.12 ft | · | 64°F | 778 ft | Clinton |
|
Bear Creek Near Muskegon, Mi
1 day ago · USGS 04122100 |
7 cfs | 10.66 ft | · | 67°F | 609 ft | Muskegon |
|
Black River Near Garnet, Mi
1 day ago · USGS 04046000 |
6 cfs | 2.39 ft | · | 78°F | 655 ft | Brevoort-Millecoquins |
|
Schweitzer Creek Near Palmer, Mi
1 day ago · USGS 04058200 |
6 cfs | 2.88 ft | · | 75°F | 1,277 ft | Escanaba |
|
Cisco Branch Ontonagon R At Cisco Lake Outlet, Mi
1 day ago · USGS 04037500 |
1 cfs | 3.90 ft | · | 59°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
- Custom flow alerts & full daily history
About Michigan streamflow
What are river levels like in Michigan right now?
As of September 6, 2026, Michigan rivers are running at 121% of normal across 125 USGS streamgauges, and the Grand River At Grand Rapids is reporting the highest discharge at 2,210 cfs. The full sortable gauge table is below.
Which Michigan river is running highest right now?
As of September 6, 2026, the highest discharge in Michigan is 2,210 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.
Streamflow in every state
Create a free account, or sign in.
Get the free Michigan report — alerts, favorites, and history & forecasts, plus the free iPhone app.