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 96% of normal, with the St. Joseph River At Niles reporting the highest discharge in the state at 3,110 cfs and a gauge stage of 5.81 ft.
Meanwhile, the Thunder Bay River At Herron Road Near Bolton is seeing a spike today — up 43% 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 through July 22-23, affecting both the state's Great Lakes shorelines. Dangerous swimming conditions with 3-7 foot waves and life-threatening rip currents are expected throughout the duration of these warnings. Affected areas include western Michigan counties (Mason, Oceana, Muskegon, Ottawa, Allegan, Van Buren, and Berrien counties near communities like St. Joseph and South Haven), northern Lower Peninsula counties (Emmet, Benzie, Manistee, Leelanau, Antrim, Charlevoix, and Presque Isle), the Upper Peninsula (Marquette, Alger, Schoolcraft, and Huron counties), and Beaver Island. Strong currents pose extreme risk of pulling swimmers into deeper water, while high waves threaten to sweep people off piers. Historical data indicates fatalities have occurred under similar conditions. Residents and visitors are urged to avoid water entry and exercise extreme caution near all beaches and piers through Wednesday 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 5.81 ft
Biggest 24h spike
Now 1,220 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
10 hours ago · USGS 04101500 |
2,730 cfs | 5.53 ft | 78°F | 69°F | 664 ft | St. Joseph |
|
Manistee River Near Wellston, Mi
9 hours ago · USGS 04125550 |
2,030 cfs | 9.00 ft | 72°F | 71°F | 621 ft | Manistee |
|
Menominee River At Koss, Mi
10 hours ago · USGS 04066800 |
1,980 cfs | 10.16 ft | · | 64°F | 663 ft | Menominee |
|
Menominee River At White Rapids Dam Near Banat, Mi
10 hours ago · USGS 04066030 |
1,640 cfs | 6.78 ft | · | 64°F | 689 ft | Menominee |
|
Menominee River Near Vulcan, Mi
11 hours ago · USGS 04065722 |
1,520 cfs | 5.48 ft | · | 64°F | 807 ft | Menominee |
|
Au Sable River Near Au Sable, Mi
9 hours ago · USGS 04137500 |
1,420 cfs | 8.82 ft | 76°F | 70°F | 587 ft | Au Sable |
|
Grand River At Grand Rapids, Mi
10 hours ago · USGS 04119000 |
1,400 cfs | 1.18 ft | · | 72°F | 587 ft | Lower Grand |
|
Menominee River Below Pemene Creek Near Pembine, Mi
10 hours ago · USGS 04066003 |
1,390 cfs | 7.29 ft | · | 64°F | 748 ft | Menominee |
|
Thunder Bay River At Herron Road Near Bolton, Mi
9 hours ago · USGS 04133501 |
1,310 cfs | 14.20 ft | · | 69°F | 704 ft | Thunder Bay |
|
Manistee River Near Mesick, Mi
9 hours ago · USGS 04124200 |
1,270 cfs | 3.95 ft | 71°F | 70°F | 754 ft | Manistee |
|
Au Sable River Near Curtisville, Mi
9 hours ago · USGS 04137005 |
1,240 cfs | 8.48 ft | 71°F | 68°F | 803 ft | Au Sable |
|
Au Sable River Near Mc Kinley, Mi
9 hours ago · USGS 04136900 |
1,230 cfs | 7.76 ft | 68°F | 65°F | 853 ft | Au Sable |
|
St. Joseph River At Mottville, Mi
9 hours ago · USGS 04099000 |
1,220 cfs | 3.07 ft | · | 69°F | 780 ft | St. Joseph |
|
Manistee River Near Sherman, Mi
9 hours ago · USGS 04124000 |
1,210 cfs | 12.61 ft | 65°F | 69°F | 820 ft | Manistee |
|
Kalamazoo River At New Richmond, Mi
10 hours ago · USGS 04108660 |
1,170 cfs | 10.37 ft | 79°F | 70°F | 605 ft | Kalamazoo |
|
Muskegon River Near Croton, Mi
9 hours ago · USGS 04121970 |
1,070 cfs | 4.76 ft | 70°F | 70°F | 685 ft | Muskegon |
|
Au Sable River At Mio, Mi
9 hours ago · USGS 04136500 |
1,060 cfs | 3.25 ft | 68°F | 64°F | 946 ft | Au Sable |
|
Au Sable River Near Red Oak, Mi
9 hours ago · USGS 04136000 |
950 cfs | 3.34 ft | 65°F | 64°F | 1,008 ft | Au Sable |
|
Manistique River Near Manistique, Mi
10 hours ago · USGS 04056500 |
900 cfs | 3.61 ft | · | 66°F | 617 ft | Manistique |
|
Menominee River Near Florence, Mi
11 hours ago · USGS 04063000 |
786 cfs | 3.23 ft | · | 62°F | 1,118 ft | Brule |
|
St. Joseph River At Three Rivers, Mi
10 hours ago · USGS 04097500 |
743 cfs | 3.54 ft | · | 68°F | 800 ft | St. Joseph |
|
Michigamme River Near Crystal Falls, Mi
10 hours ago · USGS 04062500 |
673 cfs | 3.83 ft | · | 60°F | 1,305 ft | Michigamme |
|
Kalamazoo River At Comstock, Mi
9 hours ago · USGS 04106000 |
629 cfs | 4.09 ft | · | 70°F | 792 ft | Kalamazoo |
|
Ontonagon River Near Rockland, Mi
9 hours ago · USGS 04040000 |
584 cfs | 5.45 ft | 32°F | 67°F | 670 ft | Ontonagon |
|
Tahquamenon River Near Paradise, Mi
10 hours ago · USGS 04045500 |
566 cfs | 4.02 ft | · | 65°F | 729 ft | Tahquamenon |
|
Muskegon River At Evart, Mi
9 hours ago · USGS 04121500 |
544 cfs | 7.10 ft | · | 67°F | 997 ft | Muskegon |
|
Pere Marquette River At Scottville, Mi
10 hours ago · USGS 04122500 |
508 cfs | 1.15 ft | · | 70°F | 625 ft | Pere Marquette-White |
|
Grand River At Portland, Mi
10 hours ago · USGS 04114000 |
506 cfs | 5.37 ft | · | 70°F | 719 ft | Upper Grand |
|
Escanaba River At Cornell, Mi
10 hours ago · USGS 04059000 |
456 cfs | 1.58 ft | 70°F | 63°F | 735 ft | Escanaba |
|
Tittabawassee River At Midland, Mi
9 hours ago · USGS 04156000 |
451 cfs | 9.04 ft | · | 68°F | 586 ft | Tittabawassee |
|
Grand River At Ionia, Mi
9 hours ago · USGS 04116000 |
446 cfs | 7.72 ft | · | 68°F | 620 ft | Lower Grand |
|
Kalamazoo River Near Battle Creek, Mi
10 hours ago · USGS 04105500 |
429 cfs | 2.98 ft | · | 71°F | 804 ft | Kalamazoo |
|
Grand River At Lansing, Mi
10 hours ago · USGS 04113000 |
379 cfs | 2.52 ft | · | 71°F | 808 ft | Upper Grand |
|
Paw Paw River At Riverside, Mi
10 hours ago · USGS 04102500 |
332 cfs | 5.95 ft | · | 71°F | 610 ft | St. Joseph |
|
Paint River Nr Alpha, Mi
10 hours ago · USGS 04062000 |
292 cfs | 3.38 ft | · | 61°F | 1,271 ft | Brule |
|
Sturgeon River At Wolverine, Mi
9 hours ago · USGS 04127997 |
275 cfs | 3.11 ft | · | 69°F | 778 ft | Cheboygan |
|
Kalamazoo River At Marshall, Mi
10 hours ago · USGS 04103500 |
271 cfs | 4.27 ft | · | 67°F | 882 ft | Kalamazoo |
|
White River Near Whitehall, Mi
9 hours ago · USGS 04122200 |
263 cfs | 1.22 ft | · | 72°F | 619 ft | Pere Marquette-White |
|
Dowagiac River At Sumnerville, Mi
10 hours ago · USGS 04101800 |
242 cfs | 5.50 ft | · | 69°F | 716 ft | St. Joseph |
|
Pine River At High School Bridge Nr Hoxeyville, Mi
9 hours ago · USGS 04125460 |
238 cfs | 3.98 ft | 60°F | 71°F | 856 ft | Manistee |
|
River Raisin Near Monroe, Mi
10 hours ago · USGS 04176500 |
236 cfs | 2.51 ft | 67°F | 68°F | 618 ft | Raisin |
|
Rifle River Near Sterling, Mi
9 hours ago · USGS 04142000 |
220 cfs | 1.60 ft | 53°F | 69°F | 639 ft | Au Gres-Rifle |
|
South Branch Au Sable River Near Luzerne, Mi
9 hours ago · USGS 04135700 |
207 cfs | 4.75 ft | 64°F | 63°F | 1,070 ft | Au Sable |
|
Sturgeon River Near Alston, Mi
9 hours ago · USGS 04041500 |
201 cfs | 4.08 ft | 73°F | 66°F | 735 ft | Sturgeon |
|
Brule River At Us Highway 2 Near Florence, Mi
10 hours ago · USGS 04060993 |
201 cfs | 3.55 ft | · | 61°F | 1,241 ft | Brule |
|
Boardman R Above Brown Bridge Road Nr Mayfield, Mi
9 hours ago · USGS 04126970 |
200 cfs | 3.83 ft | · | 64°F | 826 ft | Boardman-Charlevoix |
|
Jordan River Near East Jordan, Mi
10 hours ago · USGS 04127800 |
196 cfs | 3.56 ft | · | 68°F | 629 ft | Boardman-Charlevoix |
|
Huron River Near Hamburg, Mi
10 hours ago · USGS 04172000 |
184 cfs | 4.38 ft | · | 67°F | 852 ft | Huron |
|
Platte River At Honor, Mi
10 hours ago · USGS 04126740 |
166 cfs | 1.44 ft | · | 66°F | 606 ft | Betsie-Platte |
|
Clinton River At Moravian Drive At Mt. Clemens, Mi
9 hours ago · USGS 04165500 |
164 cfs | 5.91 ft | 74°F | 69°F | 574 ft | Clinton |
|
Flint River Near Flint, Mi
10 hours ago · USGS 04148500 |
155 cfs | 3.22 ft | · | 68°F | 684 ft | Flint |
|
River Raisin Near Adrian, Mi
9 hours ago · USGS 04176000 |
148 cfs | 4.25 ft | · | 67°F | 699 ft | Raisin |
|
Silver River Near L'Anse, Mi
9 hours ago · USGS 04043150 |
144 cfs | 7.25 ft | · | 67°F | 625 ft | Dead-Kelsey |
|
Chippewa River Near Mount Pleasant, Mi
9 hours ago · USGS 04154000 |
130 cfs | 3.06 ft | · | 70°F | 730 ft | Pine |
|
Tobacco River At Glidden Road At Beaverton, Mi
10 hours ago · USGS 04152500 |
120 cfs | 2.06 ft | · | 67°F | 715 ft | Tittabawassee |
|
Huron River At Ann Arbor, Mi
9 hours ago · USGS 04174500 |
119 cfs | 11.87 ft | 64°F | 68°F | 758 ft | Huron |
|
Sturgeon River Near Nahma Junction, Mi
10 hours ago · USGS 04057510 |
109 cfs | 4.23 ft | · | 66°F | 662 ft | Fishdam-Sturgeon |
|
Ford River Near Hyde, Mi
10 hours ago · USGS 04059500 |
108 cfs | 1.98 ft | 46°F | 63°F | 707 ft | Cedar-Ford |
|
Middle Branch Escanaba River Nr Princeton, Mi
9 hours ago · USGS 04058100 |
107 cfs | 1.67 ft | · | 65°F | 1,114 ft | Escanaba |
|
Clinton River Near Fraser, Mi
9 hours ago · USGS 04164000 |
105 cfs | 5.29 ft | · | 69°F | 586 ft | Clinton |
|
Middle Branch Ontonagon River Near Paulding, Mi
10 hours ago · USGS 04033000 |
103 cfs | 4.07 ft | · | 65°F | 1,500 ft | Ontonagon |
|
Shiawassee River At Owosso, Mi
9 hours ago · USGS 04144500 |
102 cfs | 2.04 ft | · | 69°F | 695 ft | Shiawassee |
|
Thornapple River Near Hastings, Mi
9 hours ago · USGS 04117500 |
101 cfs | 2.93 ft | · | 68°F | 803 ft | Thornapple |
|
Rogue River Near Rockford, Mi
10 hours ago · USGS 04118500 |
97 cfs | 3.60 ft | · | 71°F | 665 ft | Lower Grand |
|
Cass River At Frankenmuth, Mi
10 hours ago · USGS 04151500 |
96 cfs | 3.74 ft | · | 68°F | 591 ft | Cass |
|
Clinton River At Sterling Heights, Mi
10 hours ago · USGS 04161820 |
92 cfs | 7.48 ft | 72°F | 69°F | 612 ft | Clinton |
|
Little Muskegon River Near Oak Grove, Mi
9 hours ago · USGS 04121944 |
92 cfs | 3.11 ft | 68°F | 70°F | 756 ft | Muskegon |
|
Clam River At Vogel Center, Mi
9 hours ago · USGS 04121300 |
89 cfs | 2.83 ft | · | 66°F | 1,134 ft | Muskegon |
|
Pigeon R At Sturgeon Valley Rd Near Vanderbilt, Mi
9 hours ago · USGS 04128990 |
88 cfs | 2.34 ft | · | 65°F | 914 ft | Cheboygan |
|
St. Joseph River At Burlington, Mi
10 hours ago · USGS 04096405 |
85 cfs | 3.37 ft | · | 70°F | 906 ft | St. Joseph |
|
Flint River Near Otisville, Mi
9 hours ago · USGS 04147500 |
76 cfs | 2.59 ft | · | 68°F | 728 ft | Flint |
|
Prairie River Near Nottawa, Mi
10 hours ago · USGS 04097540 |
76 cfs | 3.57 ft | 36°F | 69°F | 872 ft | St. Joseph |
|
Grand River At Jackson, Mi
9 hours ago · USGS 04109000 |
70 cfs | 9.04 ft | · | 70°F | 911 ft | Upper Grand |
|
Pine River Near Midland, Mi
10 hours ago · USGS 04155500 |
66 cfs | 2.54 ft | · | 68°F | 628 ft | Pine |
|
Iron River At County Hwy-424 At Caspian, Mi
10 hours ago · USGS 04060500 |
63 cfs | 4.08 ft | · | 60°F | 1,446 ft | Brule |
|
Sturgeon River Near Sidnaw, Mi
9 hours ago · USGS 04040500 |
55 cfs | 3.81 ft | · | 64°F | 1,228 ft | Sturgeon |
|
Looking Glass River Near Eagle, Mi
10 hours ago · USGS 04114498 |
54 cfs | 2.66 ft | · | 68°F | 754 ft | Upper Grand |
|
Red Cedar River At East Lansing, Mi
9 hours ago · USGS 04112500 |
54 cfs | 3.29 ft | · | 71°F | 829 ft | Upper Grand |
|
Battle Creek At Battle Creek, Mi
10 hours ago · USGS 04105000 |
50 cfs | · | · | 71°F | 824 ft | Kalamazoo |
|
West Branch Ontonagon River Near Bergland, Mi
9 hours ago · USGS 04036000 |
50 cfs | 1.58 ft | · | 66°F | 1,304 ft | Ontonagon |
|
South Branch Tobacco River Near Beaverton, Mi
9 hours ago · USGS 04152238 |
48 cfs | 4.14 ft | · | 71°F | 727 ft | Tittabawassee |
|
Middle Branch Escanaba River At Humboldt, Mi
9 hours ago · USGS 04057800 |
41 cfs | 2.37 ft | 67°F | 64°F | 1,526 ft | Escanaba |
|
Galien River Near Sawyer, Mi
9 hours ago · USGS 04096015 |
40 cfs | 6.30 ft | · | 70°F | 614 ft | Little Calumet-Galien |
|
Portage Creek At Kalamazoo, Mi
9 hours ago · USGS 04106500 |
38 cfs | 2.20 ft | · | 71°F | 766 ft | Kalamazoo |
|
South Branch Flint River Near Columbiaville, Mi
9 hours ago · USGS 04146063 |
37 cfs | 1.35 ft | · | 67°F | 768 ft | Flint |
|
South Branch Black River Near Bangor, Mi
10 hours ago · USGS 04102700 |
36 cfs | 2.47 ft | · | 73°F | 613 ft | Black-Macatawa |
|
Saline River Near Saline, Mi
10 hours ago · USGS 04176400 |
34 cfs | 4.97 ft | · | 67°F | 711 ft | Raisin |
|
Lower River Rouge At Dearborn, Mi
10 hours ago · USGS 04168400 |
33 cfs | 3.16 ft | 72°F | 69°F | 582 ft | Detroit |
|
Red Cedar River Near Williamston, Mi
9 hours ago · USGS 04111379 |
32 cfs | 2.36 ft | · | 66°F | 865 ft | Upper Grand |
|
South Branch Hog Creek Near Allen, Mi
9 hours ago · USGS 04096515 |
29 cfs | 2.33 ft | · | 67°F | 1,013 ft | St. Joseph |
|
Clinton River At Auburn Hills, Mi
10 hours ago · USGS 04161000 |
29 cfs | · | · | 68°F | 846 ft | Clinton |
|
River Rouge At Detroit, Mi
10 hours ago · USGS 04166500 |
29 cfs | 4.76 ft | 72°F | 70°F | 591 ft | Detroit |
|
Black River Near Jeddo, Mi
10 hours ago · USGS 04159492 |
28 cfs | 3.12 ft | · | 66°F | 664 ft | St. Clair |
|
Greenwood Release Near Greenwood, Mi
9 hours ago · USGS 04057814 |
26 cfs | 2.50 ft | · | 64°F | 1,478 ft | Escanaba |
|
Mill Creek Near Dexter, Mi
10 hours ago · USGS 04173500 |
26 cfs | 5.58 ft | · | 67°F | 856 ft | Huron |
|
North Branch Clinton River Near Mt. Clemens, Mi
10 hours ago · USGS 04164500 |
24 cfs | 4.38 ft | · | 69°F | 584 ft | Clinton |
|
Trap Rock River Near Lake Linden, Mi
1 day ago · USGS 04043050 |
24 cfs | 3.80 ft | · | 65°F | 633 ft | Keweenaw Peninsula |
|
Augusta Creek Near Augusta, Mi
10 hours ago · USGS 04105700 |
22 cfs | · | · | 70°F | 817 ft | Kalamazoo |
|
Rabbit River Near Hopkins, Mi
10 hours ago · USGS 04108600 |
22 cfs | 2.74 ft | · | 68°F | 717 ft | Kalamazoo |
|
Middle River Rouge Near Garden City, Mi
9 hours ago · USGS 04167000 |
21 cfs | 2.34 ft | · | 70°F | 609 ft | Detroit |
|
Greenwood Diversion Near Greenwood, Mi
10 hours ago · USGS 04057813 |
19 cfs | 1.54 ft | · | 64°F | 1,439 ft | Escanaba |
|
Black River Near Bessemer, Mi
11 hours ago · USGS 04031000 |
19 cfs | 1.93 ft | · | 60°F | 1,186 ft | Black-Presque Isle |
|
Maple River At Maple Rapids, Mi
9 hours ago · USGS 04115000 |
17 cfs | 2.64 ft | · | 71°F | 646 ft | Maple |
|
Belle River At Memphis, Mi
9 hours ago · USGS 04160600 |
16 cfs | 1.16 ft | · | 67°F | 713 ft | St. Clair |
|
River Rouge At Southfield, Mi
9 hours ago · USGS 04166100 |
15 cfs | 3.65 ft | 71°F | 69°F | 618 ft | Detroit |
|
Sycamore Creek At Holt Road Near Holt, Mi
10 hours ago · USGS 04112850 |
14 cfs | 2.19 ft | · | 67°F | 856 ft | Upper Grand |
|
Kearsley Creek Near Davison, Mi
10 hours ago · USGS 04148140 |
12 cfs | 3.09 ft | · | 68°F | 759 ft | Flint |
|
Wanadoga Creek Near Battle Creek, Mi
10 hours ago · USGS 04104945 |
12 cfs | 3.14 ft | · | 68°F | 833 ft | Kalamazoo |
|
Fish Creek Near Crystal, Mi
10 hours ago · USGS 04115265 |
12 cfs | 1.95 ft | · | 68°F | 802 ft | Maple |
|
Middle Branch Clinton River At Macomb, Mi
10 hours ago · USGS 04164800 |
12 cfs | 6.07 ft | · | 68°F | 610 ft | Clinton |
|
East Branch Pine River Near Tustin, Mi
9 hours ago · USGS 04124500 |
11 cfs | 2.34 ft | · | 66°F | 1,149 ft | Manistee |
|
Black River Near Garnet, Mi
9 hours ago · USGS 04046000 |
9 cfs | 2.51 ft | · | 67°F | 655 ft | Brevoort-Millecoquins |
|
Mill Creek Near Avoca, Mi
10 hours ago · USGS 04159900 |
8 cfs | · | · | 66°F | 714 ft | St. Clair |
|
Farmers Creek Near Lapeer, Mi
10 hours ago · USGS 04146000 |
7 cfs | 15.25 ft | · | 68°F | 827 ft | Flint |
|
Upper River Rouge At Farmington, Mi
9 hours ago · USGS 04166300 |
6 cfs | 2.97 ft | · | 68°F | 692 ft | Detroit |
|
Schweitzer Creek Near Palmer, Mi
10 hours ago · USGS 04058200 |
6 cfs | 2.96 ft | · | 64°F | 1,277 ft | Escanaba |
|
West Fork Portage Creek At Kalamazoo, Mi
10 hours ago · USGS 04106400 |
6 cfs | 2.29 ft | · | 71°F | 883 ft | Kalamazoo |
|
Macatawa River At State Road Near Zeeland, Mi
10 hours ago · USGS 04108800 |
5 cfs | 1.96 ft | · | 72°F | 598 ft | Black-Macatawa |
|
West Fork Portage Creek Near Oshtemo, Mi
9 hours ago · USGS 04106320 |
4 cfs | 1.33 ft | · | 70°F | 875 ft | Kalamazoo |
|
East Pond Creek At Romeo, Mi
10 hours ago · USGS 04164100 |
4 cfs | 1.02 ft | · | 68°F | 778 ft | Clinton |
|
Bear Creek Near Muskegon, Mi
9 hours ago · USGS 04122100 |
3 cfs | 10.50 ft | · | 73°F | 609 ft | Muskegon |
|
Malletts Creek At Ann Arbor, Mi
9 hours ago · USGS 04174518 |
2 cfs | 3.12 ft | · | 68°F | 749 ft | Huron |
|
Plum Brook At Utica, Mi
9 hours ago · USGS 04163400 |
2 cfs | 1.99 ft | · | 69°F | 633 ft | Clinton |
|
Cisco Branch Ontonagon R At Cisco Lake Outlet, Mi
11 hours ago · USGS 04037500 |
1 cfs | 3.91 ft | · | 60°F | 1,688 ft | Ontonagon |
|
Ecorse River At Dearborn Heights, Mi
10 hours ago · USGS 04168580 |
1 cfs | 2.21 ft | · | 69°F | 611 ft | Detroit |
|
Sloan Creek Near Williamston, Mi
10 hours ago · USGS 04112000 |
0 cfs | 1.42 ft | · | 67°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.