Flow report
Iowa streamflow
Live discharge, gauge height, water temperature, and percent-of-normal readings from every USGS streamgauge in Iowa. Built for paddlers, anglers, water managers, and flood researchers.
USGS gauges
125
State percent normal
79%
Paddle runs
0
Updated
May 30
Open the Iowa flow layer on the map
Every USGS streamgauge filtered to Iowa.
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May
30
2026
Flow briefing
Streamflow levels across Iowa are currently 79% of normal, with the Mississippi River At Clinton reporting the highest discharge in the state at 54,000 cfs and a gauge stage of 10.70 ft.
Meanwhile, the Upper Iowa River Near Dorchester is seeing a spike today — up 291% 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 Iowa's named rivers.
Iowa at a glance
State-wide streamflow overview
The Iowa 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
79%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Mississippi River At Clinton
54,000 cfs
Gauge stage 10.70 ft
Biggest 24h spike
Upper Iowa River Near Dorchester
+291%
Now 778 cfs
Network coverage
Gauges + rivers tracked
125 + 37
USGS gauges feeding 37 named rivers in Iowa.
Full streamgauge inventory
Iowa USGS streamgauges
Every USGS gauge Snoflo tracks in Iowa. 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 |
|---|---|---|---|---|---|---|
|
Mississippi River At Mcgregor, Ia
12 years ago · USGS 05389500 |
21,700 cfs | 8.16 ft | · | 32°F | 610 ft | Coon-Yellow |
|
Bloody Run Creek Near Marquette, Ia
7 days ago · USGS 05389400 |
32 cfs | 4.14 ft | · | 68°F | 634 ft | Coon-Yellow |
|
Yellow River At Ion, Ia
7 days ago · USGS 05389000 |
565 cfs | 7.16 ft | · | 68°F | 681 ft | Coon-Yellow |
|
Upper Iowa River At Decorah, Ia
7 days ago · USGS 05387500 |
494 cfs | 2.22 ft | · | 68°F | 854 ft | Upper Iowa |
|
Upper Iowa River At Bluffton, Ia
7 days ago · USGS 05387440 |
335 cfs | 3.72 ft | · | 67°F | 970 ft | Upper Iowa |
|
Upper Iowa River Near Dorchester, Ia
7 days ago · USGS 05388250 |
778 cfs | 7.72 ft | · | 69°F | 668 ft | Upper Iowa |
|
Turkey River At Garber, Ia
7 days ago · USGS 05412500 |
1,760 cfs | 8.23 ft | 57°F | 68°F | 646 ft | Turkey |
|
Volga River At Littleport, Ia
7 days ago · USGS 05412400 |
554 cfs | 5.95 ft | · | 69°F | 694 ft | Turkey |
|
Turkey River Above French Hollow Cr At Elkader, Ia
7 days ago · USGS 05412020 |
1,100 cfs | 6.53 ft | · | 68°F | 726 ft | Turkey |
|
Turkey River Near Eldorado, Ia
7 days ago · USGS 05411850 |
628 cfs | 6.28 ft | · | 67°F | 897 ft | Turkey |
|
Turkey River At Spillville, Ia
7 days ago · USGS 05411600 |
183 cfs | 2.86 ft | · | 67°F | 1,067 ft | Turkey |
|
Maquoketa River Near Maquoketa, Ia
7 days ago · USGS 05418500 |
2,090 cfs | 12.89 ft | · | 70°F | 646 ft | Maquoketa |
|
North Fork Maquoketa River Near Fulton, Ia
7 days ago · USGS 05418400 |
435 cfs | 3.51 ft | 39°F | 69°F | 689 ft | Maquoketa |
|
Maquoketa River At Manchester, Ia
7 days ago · USGS 05416900 |
637 cfs | 5.97 ft | · | 67°F | 920 ft | Maquoketa |
|
Duck Creek At Dc Golf Course At Davenport, Ia
2 years ago · USGS 05422600 |
63 cfs | 4.07 ft | · | 62°F | 613 ft | Copperas-Duck |
|
Crow Creek At Bettendorf, Ia
17 years ago · USGS 05422470 |
5 cfs | 4.05 ft | · | 39°F | 585 ft | Copperas-Duck |
|
Duck Creek At 110th Ave At Davenport, Ia
9 years ago · USGS 05422560 |
10 cfs | 4.84 ft | · | 67°F | 674 ft | Copperas-Duck |
|
Mississippi River At Clinton, Ia
7 days ago · USGS 05420500 |
54,000 cfs | 10.70 ft | 67°F | 70°F | 593 ft | Copperas-Duck |
|
Wapsipinicon River At Independence, Ia
7 days ago · USGS 05421000 |
2,290 cfs | 6.65 ft | · | 67°F | 889 ft | Upper Wapsipinicon |
|
Wapsipinicon River Near Tripoli, Ia
7 days ago · USGS 05420680 |
276 cfs | 8.67 ft | · | 68°F | 1,019 ft | Upper Wapsipinicon |
|
Wapsipinicon River Near De Witt, Ia
7 days ago · USGS 05422000 |
2,820 cfs | 8.59 ft | · | 70°F | 646 ft | Lower Wapsipinicon |
|
Wapsipinicon River Near Anamosa, Ia
7 days ago · USGS 05421740 |
3,130 cfs | 8.71 ft | · | 69°F | 779 ft | Lower Wapsipinicon |
|
South Skunk River Near Oskaloosa, Ia
7 days ago · USGS 05471500 |
3,640 cfs | 14.16 ft | · | 71°F | 692 ft | South Skunk |
|
South Skunk River At Colfax, Ia
7 days ago · USGS 05471050 |
1,480 cfs | 10.46 ft | · | 71°F | 793 ft | South Skunk |
|
Indian Creek Near Mingo, Ia
7 days ago · USGS 05471200 |
570 cfs | 5.54 ft | · | 70°F | 827 ft | South Skunk |
|
South Skunk River Below Squaw Creek Near Ames, Ia
7 days ago · USGS 05471000 |
1,070 cfs | 12.93 ft | · | 70°F | 872 ft | South Skunk |
|
Squaw Creek At Ames, Ia
7 days ago · USGS 05470500 |
334 cfs | 2.65 ft | · | 70°F | 907 ft | South Skunk |
|
South Skunk River Near Ames, Ia
7 days ago · USGS 05470000 |
504 cfs | 4.75 ft | · | 70°F | 928 ft | South Skunk |
|
North Skunk River Near Sigourney, Ia
7 days ago · USGS 05472500 |
1,620 cfs | 10.22 ft | · | 70°F | 664 ft | North Skunk |
|
Skunk River At Augusta, Ia
7 days ago · USGS 05474000 |
9,770 cfs | 9.07 ft | · | 70°F | 553 ft | Skunk |
|
Cedar Creek Near Oakland Mills, Ia
7 days ago · USGS 05473400 |
632 cfs | 5.86 ft | · | 70°F | 590 ft | Skunk |
|
Big Creek Near Mt. Pleasant, Ia
7 days ago · USGS 05473450 |
48 cfs | 4.16 ft | · | 70°F | 672 ft | Skunk |
|
Cedar River At Charles City, Ia
7 days ago · USGS 05457700 |
594 cfs | 2.86 ft | · | 47°F | 977 ft | Upper Cedar |
|
Cedar River At Janesville, Ia
7 days ago · USGS 05458500 |
1,320 cfs | 2.28 ft | · | 69°F | 859 ft | Upper Cedar |
|
Cedar River At Waverly, Ia
7 days ago · USGS 05458300 |
1,160 cfs | 5.03 ft | 59°F | 68°F | 895 ft | Upper Cedar |
|
Little Cedar River Near Ionia, Ia
7 days ago · USGS 05458000 |
148 cfs | 3.92 ft | · | 68°F | 1,000 ft | Upper Cedar |
|
Shell Rock River At Shell Rock, Ia
7 days ago · USGS 05462000 |
1,610 cfs | 8.87 ft | · | 68°F | 882 ft | Shell Rock |
|
Winnebago River At Mason City, Ia
7 days ago · USGS 05459500 |
464 cfs | 5.89 ft | · | 48°F | 1,101 ft | Winnebago |
|
West Fork Cedar River At Finchford, Ia
7 days ago · USGS 05458900 |
844 cfs | 8.31 ft | · | 69°F | 859 ft | West Fork Cedar |
|
Cedar River At Cedar Rapids, Ia
7 days ago · USGS 05464500 |
6,920 cfs | 5.59 ft | 62°F | 69°F | 712 ft | Middle Cedar |
|
Wolf Creek Near Dysart, Ia
7 days ago · USGS 05464220 |
413 cfs | 3.57 ft | · | 68°F | 835 ft | Middle Cedar |
|
Black Hawk Creek At Hudson, Ia
7 days ago · USGS 05463500 |
338 cfs | 7.44 ft | · | 69°F | 897 ft | Middle Cedar |
|
Cedar River At Waterloo, Ia
7 days ago · USGS 05464000 |
4,960 cfs | 6.95 ft | · | 69°F | 823 ft | Middle Cedar |
|
Cedar River At Cedar Falls, Ia
7 days ago · USGS 05463050 |
4,440 cfs | 78.70 ft | · | 69°F | 853 ft | Middle Cedar |
|
Beaver Creek At New Hartford, Ia
7 days ago · USGS 05463000 |
335 cfs | 3.45 ft | · | 69°F | 890 ft | Middle Cedar |
|
Cedar River Near Conesville, Ia
7 days ago · USGS 05465000 |
7,610 cfs | 8.60 ft | · | 70°F | 593 ft | Lower Cedar |
|
Hoover Crk At Hoover Nat.Hist.Site West Branch, Ia
6 years ago · USGS 05464942 |
2 cfs | 1.27 ft | · | 73°F | 720 ft | Lower Cedar |
|
South Fork Iowa River Ne Of New Providence, Ia
7 days ago · USGS 05451210 |
343 cfs | 4.42 ft | · | 70°F | 963 ft | Upper Iowa |
|
Iowa River Near Rowan, Ia
7 days ago · USGS 05449500 |
332 cfs | 5.22 ft | · | 49°F | 1,187 ft | Upper Iowa |
|
Iowa River Below Coralville Dam Nr Coralville, Ia
7 days ago · USGS 05453520 |
3,600 cfs | 51.90 ft | · | 70°F | 669 ft | Middle Iowa |
|
Big Bear Creek At Ladora, Ia
7 days ago · USGS 05453000 |
313 cfs | 12.78 ft | · | 69°F | 771 ft | Middle Iowa |
|
Iowa River At Marengo, Ia
7 days ago · USGS 05453100 |
4,290 cfs | 11.18 ft | · | 69°F | 729 ft | Middle Iowa |
|
Walnut Creek Near Hartwick, Ia
7 days ago · USGS 05452200 |
78 cfs | 2.47 ft | · | 71°F | 806 ft | Middle Iowa |
|
Iowa River Near Belle Plaine, Ia
7 days ago · USGS 05452500 |
3,380 cfs | 11.02 ft | · | 69°F | 748 ft | Middle Iowa |
|
Richland Creek Near Haven, Ia
7 days ago · USGS 05451900 |
57 cfs | 11.36 ft | · | 71°F | 817 ft | Middle Iowa |
|
Salt Creek Near Elberon, Ia
7 days ago · USGS 05452000 |
172 cfs | 6.92 ft | · | 71°F | 802 ft | Middle Iowa |
|
Timber Creek Near Marshalltown, Ia
7 days ago · USGS 05451700 |
175 cfs | 4.25 ft | · | 70°F | 862 ft | Middle Iowa |
|
Iowa River At Marshalltown, Ia
7 days ago · USGS 05451500 |
1,740 cfs | 12.43 ft | · | 70°F | 853 ft | Middle Iowa |
|
Iowa River At Wapello, Ia
7 days ago · USGS 05465500 |
13,300 cfs | 15.78 ft | 49°F | 71°F | 554 ft | Lower Iowa |
|
Iowa River Near Lone Tree, Ia
7 days ago · USGS 05455700 |
5,920 cfs | 9.81 ft | · | 70°F | 601 ft | Lower Iowa |
|
English River At Kalona, Ia
7 days ago · USGS 05455500 |
1,140 cfs | 7.81 ft | · | 70°F | 655 ft | Lower Iowa |
|
Old Mans Creek Near Iowa City, Ia
7 days ago · USGS 05455100 |
278 cfs | 4.07 ft | 46°F | 70°F | 654 ft | Lower Iowa |
|
Iowa River At Iowa City, Ia
7 days ago · USGS 05454500 |
3,720 cfs | 13.24 ft | · | 70°F | 643 ft | Lower Iowa |
|
Clear Creek Near Coralville, Ia
7 days ago · USGS 05454300 |
84 cfs | 1.91 ft | · | 70°F | 660 ft | Lower Iowa |
|
Rapid Creek Near Iowa City, Ia
7 days ago · USGS 05454000 |
11 cfs | 4.00 ft | · | 70°F | 688 ft | Lower Iowa |
|
Clear Creek Near Oxford, Ia
7 days ago · USGS 05454220 |
69 cfs | 3.03 ft | · | 70°F | 722 ft | Lower Iowa |
|
Des Moines River At Humboldt, Ia
7 days ago · USGS 05476750 |
1,540 cfs | 5.53 ft | · | 47°F | 1,066 ft | Upper Des Moines |
|
East Fork Des Moines River At Dakota City, Ia
7 days ago · USGS 05479000 |
993 cfs | 9.70 ft | · | 47°F | 1,043 ft | East Fork Des Moines |
|
Des Moines River At 2nd Avenue, Ia
7 days ago · USGS 05482000 |
5,240 cfs | 15.21 ft | 78°F | 70°F | 808 ft | Middle Des Moines |
|
Des Moines River Near Saylorville, Ia
7 days ago · USGS 05481650 |
4,210 cfs | 6.09 ft | · | 70°F | 819 ft | Middle Des Moines |
|
Beaver Creek Near Grimes, Ia
7 days ago · USGS 05481950 |
535 cfs | 5.50 ft | · | 70°F | 829 ft | Middle Des Moines |
|
Des Moines River Near Stratford, Ia
7 days ago · USGS 05481300 |
4,030 cfs | 8.13 ft | · | 52°F | 902 ft | Middle Des Moines |
|
Des Moines River At Fort Dodge, Ia
7 days ago · USGS 05480500 |
3,060 cfs | 5.56 ft | · | 47°F | 974 ft | Middle Des Moines |
|
Boone River Near Webster City, Ia
7 days ago · USGS 05481000 |
574 cfs | 3.08 ft | 73°F | 51°F | 1,028 ft | Boone |
|
Raccoon River Near West Des Moines, Ia
2 months ago · USGS 05484600 |
1,320 cfs | 29.96 ft | · | 70°F | 844 ft | North Raccoon |
|
Raccoon River At Van Meter, Ia
7 days ago · USGS 05484500 |
2,800 cfs | 5.66 ft | 76°F | 70°F | 862 ft | North Raccoon |
|
Raccoon River At 63rd Street At Des Moines, Ia
7 days ago · USGS 05484650 |
2,910 cfs | 23.52 ft | · | 71°F | 797 ft | North Raccoon |
|
Raccoon River At Fleur Drive, Ia
7 days ago · USGS 05484900 |
2,820 cfs | 5.10 ft | · | 70°F | 797 ft | North Raccoon |
|
Walnut Creek At Des Moines, Ia
7 days ago · USGS 05484800 |
80 cfs | 3.76 ft | · | 70°F | 808 ft | North Raccoon |
|
North Raccoon River Near Jefferson, Ia
7 days ago · USGS 05482500 |
1,260 cfs | 6.63 ft | 76°F | 52°F | 978 ft | North Raccoon |
|
North Raccoon River Near Sac City, Ia
7 days ago · USGS 05482300 |
413 cfs | 8.20 ft | 75°F | 48°F | 1,179 ft | North Raccoon |
|
South Raccoon River At Redfield, Ia
7 days ago · USGS 05484000 |
681 cfs | 3.61 ft | 68°F | 70°F | 917 ft | South Raccoon |
|
Middle Raccoon River At Panora, Ia
7 days ago · USGS 05483600 |
256 cfs | 4.80 ft | 35°F | 69°F | 997 ft | South Raccoon |
|
Middle Raccoon River Near Bayard, Ia
7 days ago · USGS 05483450 |
265 cfs | 10.41 ft | · | 69°F | 1,054 ft | South Raccoon |
|
White Breast Creek Near Dallas, Ia
7 days ago · USGS 05487980 |
307 cfs | 7.63 ft | · | 71°F | 773 ft | Lake Red Rock |
|
South River Near Ackworth, Ia
7 days ago · USGS 05487470 |
455 cfs | 7.29 ft | · | 71°F | 805 ft | Lake Red Rock |
|
Middle River Near Indianola, Ia
7 days ago · USGS 05486490 |
531 cfs | 9.03 ft | · | 71°F | 794 ft | Lake Red Rock |
|
North River Near Norwalk, Ia
7 days ago · USGS 05486000 |
560 cfs | 9.77 ft | · | 71°F | 811 ft | Lake Red Rock |
|
Des Moines River Blw Raccoon Riv At Des Moines, Ia
7 days ago · USGS 05485500 |
9,020 cfs | 14.48 ft | · | 70°F | 779 ft | Lake Red Rock |
|
Fourmile Creek At Des Moines, Ia
7 days ago · USGS 05485640 |
146 cfs | 4.48 ft | · | 70°F | 813 ft | Lake Red Rock |
|
Fourmile Creek Near Ankeny, Ia
7 days ago · USGS 05485605 |
113 cfs | 2.51 ft | · | 70°F | 911 ft | Lake Red Rock |
|
Des Moines River At Keosauqua, Ia
7 days ago · USGS 05490500 |
21,200 cfs | 16.10 ft | · | 69°F | 579 ft | Lower Des Moines |
|
Des Moines River At Ottumwa, Ia
7 days ago · USGS 05489500 |
19,100 cfs | 7.10 ft | 67°F | 72°F | 635 ft | Lower Des Moines |
|
Cedar Creek Near Bussey, Ia
7 days ago · USGS 05489000 |
265 cfs | 5.91 ft | · | 72°F | 696 ft | Lower Des Moines |
|
Des Moines River Near Tracy, Ia
7 days ago · USGS 05488500 |
16,200 cfs | 7.71 ft | · | 71°F | 676 ft | Lower Des Moines |
|
English Creek Near Knoxville, Ia
7 days ago · USGS 05488200 |
122 cfs | 10.12 ft | · | 71°F | 749 ft | Lower Des Moines |
|
Des Moines River Near Pella, Ia
7 days ago · USGS 05488110 |
16,300 cfs | 91.36 ft | 66°F | 71°F | 689 ft | Lower Des Moines |
|
Fox River At Bloomfield, Ia
4 years ago · USGS 05494300 |
7 cfs | 2.08 ft | · | 75°F | 774 ft | Bear-Wyaconda |
|
Big Sioux River At Akron, Ia
7 days ago · USGS 06485500 |
1,140 cfs | 6.34 ft | · | 54°F | 1,151 ft | Lower Big Sioux |
|
Rock River Near Rock Valley, Ia
7 days ago · USGS 06483500 |
593 cfs | 5.44 ft | · | 49°F | 1,238 ft | Rock |
|
Rock River Below Tom Creek At Rock Rapids, Ia
7 days ago · USGS 06483290 |
137 cfs | 7.65 ft | · | 52°F | 1,316 ft | Rock |
|
Soldier River At Pisgah, Ia
7 days ago · USGS 06608500 |
151 cfs | 3.22 ft | · | 54°F | 1,047 ft | Blackbird-Soldier |
|
Perry Creek Near Milnerville, Ia
9 years ago · USGS 06599900 |
25 cfs | 5.14 ft | · | -9°F | 1,298 ft | Blackbird-Soldier |
|
Floyd River At James, Ia
7 days ago · USGS 06600500 |
564 cfs | 9.61 ft | · | 53°F | 1,117 ft | Floyd |
|
Floyd River At Alton, Ia
7 days ago · USGS 06600100 |
127 cfs | 6.33 ft | · | 49°F | 1,289 ft | Floyd |
|
Little Sioux River Near Turin, Ia
7 days ago · USGS 06607500 |
2,230 cfs | 9.50 ft | · | 54°F | 1,029 ft | Little Sioux |
|
Little Sioux River At Correctionville, Ia
7 days ago · USGS 06606600 |
2,110 cfs | 7.62 ft | · | 54°F | 1,106 ft | Little Sioux |
|
Little Sioux River At Linn Grove, Ia
7 days ago · USGS 06605850 |
1,410 cfs | 9.05 ft | · | 51°F | 1,249 ft | Little Sioux |
|
Ocheyedan River Near Spencer, Ia
7 days ago · USGS 06605000 |
390 cfs | 3.76 ft | · | 46°F | 1,317 ft | Little Sioux |
|
Monona-Harrison Ditch Near Turin, Ia
7 days ago · USGS 06602400 |
305 cfs | 5.50 ft | · | 54°F | 1,021 ft | Monona-Harrison Ditch |
|
West Fork Ditch At Hornick, Ia
2 years ago · USGS 06602020 |
80 cfs | 6.70 ft | · | 64°F | 1,071 ft | Monona-Harrison Ditch |
|
Maple River At Mapleton, Ia
7 days ago · USGS 06607200 |
317 cfs | 5.31 ft | · | 49°F | 1,114 ft | Maple |
|
Boyer River At Logan, Ia
7 days ago · USGS 06609500 |
494 cfs | 4.59 ft | · | 54°F | 1,014 ft | Boyer |
|
West Nishnabotna River At Randolph, Ia
7 days ago · USGS 06808500 |
823 cfs | 9.05 ft | 58°F | 69°F | 956 ft | West Nishnabotna |
|
West Nishnabotna River At Hancock, Ia
7 days ago · USGS 06807410 |
324 cfs | 2.90 ft | · | 68°F | 1,089 ft | West Nishnabotna |
|
East Nishnabotna River At Red Oak, Ia
7 days ago · USGS 06809500 |
404 cfs | 6.92 ft | · | 69°F | 1,013 ft | East Nishnabotna |
|
East Nishnabotna River Near Atlantic, Ia
7 days ago · USGS 06809210 |
232 cfs | 3.17 ft | · | 69°F | 1,109 ft | East Nishnabotna |
|
Nishnabotna River Above Hamburg, Ia
7 days ago · USGS 06810000 |
2,230 cfs | 10.97 ft | · | 71°F | 904 ft | Nishnabotna |
|
Nodaway River At Clarinda, Ia
7 days ago · USGS 06817000 |
778 cfs | 11.64 ft | 76°F | 70°F | 966 ft | West Nodaway |
|
East Fork 102 River At Bedford, Ia
7 days ago · USGS 06819185 |
0 cfs | 11.66 ft | · | 71°F | 1,084 ft | One Hundred And Two |
|
Thompson River At Davis City, Ia
7 days ago · USGS 06898000 |
1,070 cfs | 3.09 ft | · | 71°F | 910 ft | Thompson |
|
Chariton River Near Moulton, Ia
7 days ago · USGS 06904010 |
2,000 cfs | 27.14 ft | · | 72°F | 847 ft | Upper Chariton |
|
South Fork Chariton River Near Promise City, Ia
7 days ago · USGS 06903700 |
87 cfs | 3.90 ft | · | 71°F | 922 ft | Upper Chariton |
|
Chariton River Near Rathbun, Ia
7 days ago · USGS 06903900 |
1,780 cfs | 10.91 ft | · | 71°F | 855 ft | Upper Chariton |
|
Chariton River Near Chariton, Ia
7 days ago · USGS 06903400 |
267 cfs | 8.83 ft | · | 71°F | 968 ft | Upper Chariton |
By river
Explore Iowa's named rivers
Rivers across Iowa with USGS gauge coverage. Tap any one to see every gauge that reports on it -- great for paddlers, anglers, and watershed researchers narrowing in on a specific drainage.
Boone River
Boyer River
Cedar River
Chariton River
East Nishnabotna River
English River
Floyd River
Iowa River
Little Cedar River
Little Sioux River
Maple River
Maquoketa River
Middle Raccoon River
Middle River
Mississippi River
Nishnabotna River
Nodaway River
North Raccoon River
North River
North Skunk River
Ocheyedan River
Raccoon River
Rock River
Shell Rock River
Skunk River
Soldier River
South Raccoon River
South River
South Skunk River
Thompson River
Turkey River
Upper Iowa River
Volga River
Wapsipinicon River
West Nishnabotna River
Winnebago River
Yellow River
Flow report FAQ
About Iowa streamflow
Where does the Iowa 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 Iowa 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 Iowa 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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