Flow report

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.

USGS gauges
150
State percent normal
69%
Paddle runs
0
Updated
May 17
Open the Michigan flow layer on the map Every USGS streamgauge filtered to Michigan.
Open the map →
May
17
2026
Flow briefing

Streamflow levels across Michigan are currently 69% of normal, with the St. Joseph River At Niles reporting the highest discharge in the state at 4,140 cfs and a gauge stage of 6.60 ft.

Meanwhile, the Clinton River Near Fraser is seeing a spike today — up 137% 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.

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

69%

100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.

Highest discharge

St. Joseph River At Niles 4,140 cfs

Gauge stage 6.60 ft

Biggest 24h spike

Clinton River Near Fraser +137%

Now 547 cfs

Network coverage

Gauges + rivers tracked 150 + 53

USGS gauges feeding 53 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.

150 gauges
Streamgage Streamflow Gage height Water temp Air temp Elevation Watershed
Black River Near Bessemer, Mi
19 hours ago · USGS 04031000
91 cfs 2.36 ft · 68°F 1,186 ft Black-Presque Isle
Presque Isle River Near Tula, Mi
2 years ago · USGS 04032000
66 cfs 4.53 ft · 87°F 1,312 ft Black-Presque Isle
Cisco Branch Ontonagon R At Cisco Lake Outlet, Mi
19 hours ago · USGS 04037500
39 cfs 4.64 ft · 69°F 1,688 ft Ontonagon
Middle Branch Ontonagon River Near Paulding, Mi
18 hours ago · USGS 04033000
157 cfs 4.66 ft · 70°F 1,500 ft Ontonagon
Bond Falls Canal Near Paulding, Mi
10 years ago · USGS 04033500
91 cfs 4.32 ft · 46°F 1,432 ft Ontonagon
South Branch Ontonagon River At Ewen, Mi
12 years ago · USGS 04039500
115 cfs · · 45°F 1,123 ft Ontonagon
West Branch Ontonagon River Near Bergland, Mi
18 hours ago · USGS 04036000
91 cfs 2.14 ft · 68°F 1,304 ft Ontonagon
Ontonagon River Near Rockland, Mi
18 hours ago · USGS 04040000
778 cfs 5.87 ft 32°F 70°F 670 ft Ontonagon
Trap Rock River Near Lake Linden, Mi
5 months ago · USGS 04043050
86 cfs 3.83 ft · 54°F 633 ft Keweenaw Peninsula
Sturgeon River Near Sidnaw, Mi
18 hours ago · USGS 04040500
147 cfs 4.45 ft · 67°F 1,228 ft Sturgeon
Sturgeon River Near Alston, Mi
18 hours ago · USGS 04041500
496 cfs 4.84 ft 55°F 65°F 735 ft Sturgeon
Silver River Near L'Anse, Mi
18 hours ago · USGS 04043150
54 cfs 6.74 ft · 63°F 625 ft Dead-Kelsey
Au Train River At Forest Lake, Mi
1 year ago · USGS 04044724
137 cfs 3.70 ft · 76°F 692 ft Betsy-Chocolay
Tahquamenon River Near Paradise, Mi
18 hours ago · USGS 04045500
1,770 cfs 5.99 ft · 67°F 729 ft Tahquamenon
Brule River At Us Highway 2 Near Florence, Mi
19 hours ago · USGS 04060993
426 cfs 4.02 ft · 62°F 1,241 ft Brule
Paint River Nr Alpha, Mi
19 hours ago · USGS 04062000
413 cfs 3.68 ft · 67°F 1,271 ft Brule
Iron River At County Hwy-424 At Caspian, Mi
19 hours ago · USGS 04060500
86 cfs 4.54 ft · 66°F 1,446 ft Brule
Michigamme River Near Crystal Falls, Mi
19 hours ago · USGS 04062500
452 cfs 3.35 ft · 67°F 1,305 ft Michigamme
Menominee River At Koss, Mi
18 hours ago · USGS 04066800
3,550 cfs 10.69 ft · 64°F 663 ft Menominee
Menominee River At White Rapids Dam Near Banat, Mi
18 hours ago · USGS 04066030
2,880 cfs 7.66 ft · 64°F 689 ft Menominee
Menominee River Below Pemene Creek Near Pembine, Mi
18 hours ago · USGS 04066003
2,460 cfs 8.09 ft · 65°F 748 ft Menominee
Menominee River Near Vulcan, Mi
19 hours ago · USGS 04065722
2,210 cfs 6.30 ft · 66°F 807 ft Menominee
Menominee River At Twin Falls Near Iron Mt, Mi
9 years ago · USGS 04063500
3,420 cfs 16.37 ft · 45°F 1,066 ft Menominee
Menominee River Near Florence, Mi
19 hours ago · USGS 04063000
1,310 cfs 3.98 ft · 62°F 1,118 ft Brule
Ford River Near Hyde, Mi
18 hours ago · USGS 04059500
358 cfs 2.76 ft 46°F 65°F 707 ft Cedar-Ford
Escanaba River At Cornell, Mi
18 hours ago · USGS 04059000
1,110 cfs 2.12 ft 55°F 66°F 735 ft Escanaba
Middle Branch Escanaba River Nr Princeton, Mi
2 days ago · USGS 04058100
312 cfs 2.51 ft · 77°F 1,114 ft Escanaba
Schweitzer Creek Near Palmer, Mi
18 hours ago · USGS 04058200
19 cfs 3.35 ft · 58°F 1,277 ft Escanaba
Greenwood Diversion Near Greenwood, Mi
18 hours ago · USGS 04057813
14 cfs 1.26 ft · 58°F 1,439 ft Escanaba
Greenwood Release Near Greenwood, Mi
18 hours ago · USGS 04057814
25 cfs 2.43 ft · 58°F 1,478 ft Escanaba
Middle Branch Escanaba River At Humboldt, Mi
18 hours ago · USGS 04057800
64 cfs 2.63 ft 58°F 59°F 1,526 ft Escanaba
Sturgeon River Near Nahma Junction, Mi
18 hours ago · USGS 04057510
261 cfs 5.03 ft · 67°F 662 ft Fishdam-Sturgeon
Galien River Near Sawyer, Mi
18 hours ago · USGS 04096015
62 cfs 6.86 ft · 88°F 614 ft Little Calumet-Galien
St. Joseph River At Mottville, Mi
18 hours ago · USGS 04099000
2,390 cfs 4.31 ft · 84°F 780 ft St. Joseph
St. Joseph River At Niles, Mi
18 hours ago · USGS 04101500
4,140 cfs 6.60 ft 63°F 85°F 664 ft St. Joseph
Prairie River Near Nottawa, Mi
18 hours ago · USGS 04097540
114 cfs 4.25 ft 36°F 83°F 872 ft St. Joseph
Dowagiac River At Sumnerville, Mi
18 hours ago · USGS 04101800
328 cfs 6.05 ft · 85°F 716 ft St. Joseph
St. Joseph River At Three Rivers, Mi
18 hours ago · USGS 04097500
2,020 cfs 5.10 ft · 84°F 800 ft St. Joseph
South Branch Hog Creek Near Allen, Mi
18 hours ago · USGS 04096515
40 cfs 2.58 ft · 84°F 1,013 ft St. Joseph
St. Joseph River At Burlington, Mi
18 hours ago · USGS 04096405
230 cfs 4.31 ft · 83°F 906 ft St. Joseph
Paw Paw River At Riverside, Mi
17 hours ago · USGS 04102500
421 cfs 6.62 ft · 86°F 610 ft St. Joseph
South Branch Black River Near Bangor, Mi
18 hours ago · USGS 04102700
64 cfs 3.20 ft · 86°F 613 ft Black-Macatawa
Macatawa River At State Road Near Zeeland, Mi
18 hours ago · USGS 04108800
19 cfs 2.50 ft · 84°F 598 ft Black-Macatawa
West Fork Portage Creek Near Oshtemo, Mi
18 hours ago · USGS 04106320
8 cfs 1.54 ft · 84°F 875 ft Kalamazoo
West Fork Portage Creek At Kalamazoo, Mi
18 hours ago · USGS 04106400
12 cfs 2.52 ft · 84°F 883 ft Kalamazoo
Kalamazoo River Near Marengo, Mi
14 years ago · USGS 04103010
278 cfs · · 52°F 910 ft Kalamazoo
Kalamazoo River At Marshall, Mi
18 hours ago · USGS 04103500
339 cfs 4.47 ft · 84°F 882 ft Kalamazoo
Portage Creek At Kalamazoo, Mi
18 hours ago · USGS 04106500
51 cfs 2.40 ft · 85°F 766 ft Kalamazoo
Kalamazoo River At Comstock, Mi
18 hours ago · USGS 04106000
969 cfs 4.59 ft · 84°F 792 ft Kalamazoo
Kalamazoo River Near Battle Creek, Mi
18 hours ago · USGS 04105500
668 cfs 3.36 ft · 84°F 804 ft Kalamazoo
Battle Creek At Battle Creek, Mi
18 hours ago · USGS 04105000
204 cfs 1.01 ft · 84°F 824 ft Kalamazoo
Augusta Creek Near Augusta, Mi
18 hours ago · USGS 04105700
37 cfs 1.09 ft · 84°F 817 ft Kalamazoo
Wanadoga Creek Near Battle Creek, Mi
18 hours ago · USGS 04104945
28 cfs 3.75 ft · 84°F 833 ft Kalamazoo
Rabbit River Near Hopkins, Mi
18 hours ago · USGS 04108600
46 cfs 3.42 ft · 84°F 717 ft Kalamazoo
Kalamazoo River Near New Richmond, Mi
15 years ago · USGS 04108670
4,480 cfs · · 47°F 627 ft Kalamazoo
Kalamazoo River At New Richmond, Mi
18 hours ago · USGS 04108660
1,860 cfs 11.47 ft 63°F 85°F 605 ft Kalamazoo
Grand River At Jackson, Mi
18 hours ago · USGS 04109000
86 cfs 9.24 ft · 84°F 911 ft Upper Grand
Grand River Near Eaton Rapids, Mi
2 months ago · USGS 04111000
1,400 cfs 4.79 ft · 63°F 855 ft Upper Grand
Sycamore Creek At Holt Road Near Holt, Mi
18 hours ago · USGS 04112850
41 cfs 3.08 ft · 84°F 856 ft Upper Grand
Sloan Creek Near Williamston, Mi
18 hours ago · USGS 04112000
2 cfs 1.87 ft · 83°F 870 ft Upper Grand
Red Cedar River Near Williamston, Mi
18 hours ago · USGS 04111379
77 cfs 3.07 ft · 83°F 865 ft Upper Grand
Red Cedar River At East Lansing, Mi
18 hours ago · USGS 04112500
166 cfs 3.70 ft · 83°F 829 ft Upper Grand
Grand River At Lansing, Mi
18 hours ago · USGS 04113000
877 cfs 3.68 ft · 83°F 808 ft Upper Grand
Looking Glass River Near Eagle, Mi
18 hours ago · USGS 04114498
160 cfs 3.26 ft · 83°F 754 ft Upper Grand
Grand River At Portland, Mi
18 hours ago · USGS 04114000
1,070 cfs 6.08 ft · 83°F 719 ft Upper Grand
Maple River At Maple Rapids, Mi
18 hours ago · USGS 04115000
183 cfs 4.58 ft · 82°F 646 ft Maple
Fish Creek Near Crystal, Mi
17 hours ago · USGS 04115265
30 cfs 2.60 ft · 80°F 802 ft Maple
Grand River At Grand Rapids, Mi
18 hours ago · USGS 04119000
4,000 cfs 4.08 ft · 84°F 587 ft Lower Grand
Grand River At Ionia, Mi
18 hours ago · USGS 04116000
1,990 cfs 10.28 ft · 83°F 620 ft Lower Grand
Rogue River Near Rockford, Mi
18 hours ago · USGS 04118500
239 cfs 4.40 ft · 82°F 665 ft Lower Grand
Quaker Brook Near Nashville, Mi
10 years ago · USGS 04117000
21 cfs 2.32 ft · 52°F 828 ft Thornapple
Thornapple River Near Hastings, Mi
18 hours ago · USGS 04117500
252 cfs 3.46 ft · 84°F 803 ft Thornapple
White River Near Whitehall, Mi
18 hours ago · USGS 04122200
516 cfs 2.50 ft · 82°F 619 ft Pere Marquette-White
Pere Marquette River At Scottville, Mi
18 hours ago · USGS 04122500
805 cfs 2.22 ft · 80°F 625 ft Pere Marquette-White
Bear Creek Near Muskegon, Mi
18 hours ago · USGS 04122100
17 cfs 11.26 ft · 83°F 609 ft Muskegon
Little Muskegon River Near Oak Grove, Mi
18 hours ago · USGS 04121944
244 cfs 3.72 ft 61°F 78°F 756 ft Muskegon
Muskegon River Near Croton, Mi
18 hours ago · USGS 04121970
2,260 cfs 5.91 ft 57°F 79°F 685 ft Muskegon
Muskegon River At Evart, Mi
18 hours ago · USGS 04121500
1,540 cfs 8.39 ft · 74°F 997 ft Muskegon
Clam River At Vogel Center, Mi
18 hours ago · USGS 04121300
238 cfs 3.80 ft · 74°F 1,134 ft Muskegon
East Branch Pine River Near Tustin, Mi
18 hours ago · USGS 04124500
32 cfs 2.66 ft · 75°F 1,149 ft Manistee
Pine River At High School Bridge Nr Hoxeyville, Mi
18 hours ago · USGS 04125460
283 cfs 4.35 ft 56°F 75°F 856 ft Manistee
Manistee River Near Wellston, Mi
18 hours ago · USGS 04125550
2,480 cfs 9.22 ft 55°F 76°F 621 ft Manistee
Manistee River Near Mesick, Mi
18 hours ago · USGS 04124200
1,590 cfs 4.57 ft 53°F 75°F 754 ft Manistee
Manistee River Near Sherman, Mi
18 hours ago · USGS 04124000
1,630 cfs 13.49 ft 57°F 75°F 820 ft Manistee
Platte River At Honor, Mi
18 hours ago · USGS 04126740
163 cfs 1.42 ft · 70°F 606 ft Betsie-Platte
Boardman R Above Brown Bridge Road Nr Mayfield, Mi
18 hours ago · USGS 04126970
207 cfs 3.96 ft · 73°F 826 ft Boardman-Charlevoix
Jordan River Near East Jordan, Mi
18 hours ago · USGS 04127800
216 cfs 3.70 ft · 71°F 629 ft Boardman-Charlevoix
Manistique River Near Manistique, Mi
18 hours ago · USGS 04056500
2,610 cfs 7.06 ft · 66°F 617 ft Manistique
Black River Near Garnet, Mi
18 hours ago · USGS 04046000
33 cfs 3.03 ft · 61°F 655 ft Brevoort-Millecoquins
Pine River Near Rudyard, Mi
13 years ago · USGS 04127918
87 cfs · · 45°F 621 ft Carp-Pine
Pigeon R At Sturgeon Valley Rd Near Vanderbilt, Mi
18 hours ago · USGS 04128990
97 cfs 2.47 ft · 68°F 914 ft Cheboygan
Sturgeon River At Wolverine, Mi
18 hours ago · USGS 04127997
301 cfs 3.26 ft · 68°F 778 ft Cheboygan
Thunder Bay River At Herron Road Near Bolton, Mi
18 hours ago · USGS 04133501
659 cfs 12.63 ft · 61°F 704 ft Thunder Bay
Au Sable River Near Au Sable, Mi
18 hours ago · USGS 04137500
1,800 cfs 9.45 ft 56°F 61°F 587 ft Au Sable
Au Sable River Near Curtisville, Mi
18 hours ago · USGS 04137005
1,580 cfs 9.10 ft 54°F 66°F 803 ft Au Sable
Au Sable River Near Mc Kinley, Mi
18 hours ago · USGS 04136900
1,680 cfs 8.31 ft 53°F 67°F 853 ft Au Sable
South Branch Au Sable River Near Luzerne, Mi
18 hours ago · USGS 04135700
332 cfs 5.36 ft 58°F 72°F 1,070 ft Au Sable
Au Sable River At Mio, Mi
18 hours ago · USGS 04136500
1,290 cfs 3.65 ft 56°F 71°F 946 ft Au Sable
Au Sable River Near Red Oak, Mi
18 hours ago · USGS 04136000
1,340 cfs 4.01 ft 60°F 71°F 1,008 ft Au Sable
Rifle River Near Sterling, Mi
18 hours ago · USGS 04142000
359 cfs 2.21 ft 53°F 69°F 639 ft Au Gres-Rifle
Pigeon R Near Caseville, Mi
6 years ago · USGS 04159010
64 cfs 4.61 ft · 41°F 602 ft Pigeon-Wiscoggin
Tittabawassee River At Midland, Mi
18 hours ago · USGS 04156000
1,460 cfs 10.78 ft · 73°F 586 ft Tittabawassee
South Branch Tobacco River Near Beaverton, Mi
18 hours ago · USGS 04152238
116 cfs 5.01 ft · 73°F 727 ft Tittabawassee
Tobacco River At Glidden Road At Beaverton, Mi
18 hours ago · USGS 04152500
337 cfs 2.99 ft · 73°F 715 ft Tittabawassee
Pine River Near Midland, Mi
18 hours ago · USGS 04155500
324 cfs 2.93 ft · 75°F 628 ft Pine
Chippewa River Near Mount Pleasant, Mi
18 hours ago · USGS 04154000
283 cfs 3.58 ft · 75°F 730 ft Pine
Shiawassee River At Owosso, Mi
18 hours ago · USGS 04144500
299 cfs 2.71 ft · 82°F 695 ft Shiawassee
Kearsley Creek Near Davison, Mi
18 hours ago · USGS 04148140
39 cfs 3.81 ft · 82°F 759 ft Flint
Flint River Near Flint, Mi
18 hours ago · USGS 04148500
500 cfs 4.33 ft · 82°F 684 ft Flint
Farmers Creek Near Lapeer, Mi
18 hours ago · USGS 04146000
28 cfs 15.62 ft · 81°F 827 ft Flint
Flint River Near Otisville, Mi
18 hours ago · USGS 04147500
298 cfs 4.00 ft · 81°F 728 ft Flint
South Branch Flint River Near Columbiaville, Mi
18 hours ago · USGS 04146063
167 cfs 2.06 ft · 80°F 768 ft Flint
Flint River Near Fosters, Mi
14 years ago · USGS 04149000
330 cfs · · 55°F 586 ft Flint
Cass River At Frankenmuth, Mi
18 hours ago · USGS 04151500
318 cfs 5.02 ft · 80°F 591 ft Cass
Saginaw River At Saginaw, Mi
14 years ago · USGS 04157000
0 cfs · · 54°F 577 ft Saginaw
Belle River At Memphis, Mi
18 hours ago · USGS 04160600
49 cfs 1.55 ft · 79°F 713 ft St. Clair
Mill Creek Near Avoca, Mi
18 hours ago · USGS 04159900
37 cfs 1.30 ft · 77°F 714 ft St. Clair
Black River Near Jeddo, Mi
18 hours ago · USGS 04159492
120 cfs 3.47 ft · 73°F 664 ft St. Clair
Clinton River Near Fraser, Mi
18 hours ago · USGS 04164000
547 cfs 7.79 ft · 84°F 586 ft Clinton
Clinton River At Moravian Drive At Mt. Clemens, Mi
18 hours ago · USGS 04165500
690 cfs 6.92 ft 59°F 84°F 574 ft Clinton
Plum Brook At Utica, Mi
18 hours ago · USGS 04163400
32 cfs 2.81 ft · 85°F 633 ft Clinton
Clinton River At Sterling Heights, Mi
18 hours ago · USGS 04161820
280 cfs 8.53 ft 59°F 84°F 612 ft Clinton
North Branch Clinton River Near Mt. Clemens, Mi
18 hours ago · USGS 04164500
59 cfs 4.85 ft · 83°F 584 ft Clinton
Clinton River At Auburn Hills, Mi
18 hours ago · USGS 04161000
87 cfs 1.50 ft · 84°F 846 ft Clinton
Paint Creek At Rochester, Mi
5 years ago · USGS 04161540
18 cfs 1.69 ft · 59°F 761 ft Clinton
Middle Branch Clinton River At Macomb, Mi
18 hours ago · USGS 04164800
28 cfs 6.30 ft · 83°F 610 ft Clinton
Stony Creek Near Washington, Mi
12 years ago · USGS 04161800
23 cfs · · 54°F 778 ft Clinton
Stony Creek Near Romeo, Mi
12 years ago · USGS 04161580
13 cfs · · 53°F 874 ft Clinton
East Pond Creek At Romeo, Mi
18 hours ago · USGS 04164100
18 cfs 1.40 ft · 81°F 778 ft Clinton
Ecorse River At Dearborn Heights, Mi
18 hours ago · USGS 04168580
2 cfs 2.34 ft · 84°F 611 ft Detroit
Lower River Rouge At Inkster, Mi
9 years ago · USGS 04168000
132 cfs 5.74 ft · 56°F 597 ft Detroit
Lower River Rouge At Dearborn, Mi
18 hours ago · USGS 04168400
44 cfs 3.28 ft 62°F 84°F 582 ft Detroit
Middle River Rouge At Dearborn Heights, Mi
9 years ago · USGS 04167150
170 cfs 3.87 ft 52°F 56°F 587 ft Detroit
Middle River Rouge Near Garden City, Mi
18 hours ago · USGS 04167000
35 cfs 2.84 ft · 85°F 609 ft Detroit
Middle River Rouge At Plymouth, Mi
14 years ago · USGS 04166750
40 cfs · · 55°F 688 ft Detroit
River Rouge At Detroit, Mi
18 hours ago · USGS 04166500
86 cfs 5.65 ft 59°F 85°F 591 ft Detroit
Upper River Rouge At Detroit, Mi
15 years ago · USGS 04166470
10 cfs · 50°F 55°F 605 ft Detroit
River Rouge At Southfield, Mi
18 hours ago · USGS 04166100
96 cfs 5.29 ft 59°F 85°F 618 ft Detroit
Upper River Rouge At Farmington, Mi
18 hours ago · USGS 04166300
11 cfs 3.08 ft · 85°F 692 ft Detroit
River Rouge At Birmingham, Mi
5 years ago · USGS 04166000
13 cfs 1.79 ft · 59°F 722 ft Detroit
Malletts Creek At Ann Arbor, Mi
18 hours ago · USGS 04174518
4 cfs 3.21 ft · 84°F 749 ft Huron
Huron River At Ann Arbor, Mi
18 hours ago · USGS 04174500
337 cfs 12.42 ft 64°F 84°F 758 ft Huron
Mill Creek Near Dexter, Mi
18 hours ago · USGS 04173500
46 cfs 6.04 ft · 84°F 856 ft Huron
Huron River Near Hamburg, Mi
18 hours ago · USGS 04172000
204 cfs 3.90 ft · 83°F 852 ft Huron
Huron River Near New Hudson, Mi
11 years ago · USGS 04170500
105 cfs · · 54°F 868 ft Huron
Huron River At Milford, Mi
5 years ago · USGS 04170000
73 cfs 5.22 ft · 41°F 883 ft Huron
River Raisin Near Adrian, Mi
18 hours ago · USGS 04176000
274 cfs 5.54 ft · 84°F 699 ft Raisin
River Raisin Near Monroe, Mi
17 hours ago · USGS 04176500
434 cfs 2.95 ft 55°F 83°F 618 ft Raisin
Saline River Near Saline, Mi
18 hours ago · USGS 04176400
41 cfs 5.14 ft · 84°F 711 ft Raisin
River Raisin Near Manchester, Mi
7 months ago · USGS 04175600
17 cfs 2.13 ft · 83°F 898 ft Raisin
Flow report FAQ

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.