Flow report
Iowa River Levels & Streamflow
As of Aug 10, 2026, Iowa rivers are running at 136% of normal across 117 USGS gauges — the highest is 38,700 cfs on the Mississippi River At Clinton. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Iowa.
USGS gauges
117
State percent normal
136%
Paddle runs
0
Updated
Aug 10
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Every USGS streamgauge filtered to Iowa.
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August
10
2026
Flow briefing
Streamflow levels across Iowa are currently 136% of normal, with the Mississippi River At Clinton reporting the highest discharge in the state at 38,700 cfs and a gauge stage of 9.52 ft.
Meanwhile, the Chariton River Near Rathbun is seeing a spike today — up 5716% 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.
River levels near Iowa towns
Active weather warnings for Iowa
# Iowa Storm Center Report
A Special Weather Statement has been issued for eastern Iowa through mid-morning on August 10th, affecting areas along Interstate 80 and Highway 30 corridors in a band stretching from Genoa Bluff to the Illinois border. Dense fog with visibilities reduced to under half a mile is expected during the morning commute, particularly impacting the Quad Cities region and surrounding communities. Motorists should exercise extreme caution as visibility conditions may change suddenly over short distances. The fog is anticipated to dissipate between 9:00 and 10:00 AM. Drivers are urged to reduce speed, use headlights, and allow extra travel time during the affected period.
A Special Weather Statement has been issued for eastern Iowa through mid-morning on August 10th, affecting areas along Interstate 80 and Highway 30 corridors in a band stretching from Genoa Bluff to the Illinois border. Dense fog with visibilities reduced to under half a mile is expected during the morning commute, particularly impacting the Quad Cities region and surrounding communities. Motorists should exercise extreme caution as visibility conditions may change suddenly over short distances. The fog is anticipated to dissipate between 9:00 and 10:00 AM. Drivers are urged to reduce speed, use headlights, and allow extra travel time during the affected period.
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
136%
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Mississippi River At Clinton
38,700 cfs
Gauge stage 9.52 ft
Biggest 24h spike
Chariton River Near Rathbun
+5716%
Now 791 cfs
Network coverage
Gauges + rivers tracked
117 + 0
USGS gauges feeding 0 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 Clinton, Ia
20 hours ago · USGS 05420500 |
34,400 cfs | 9.44 ft | 79°F | 70°F | 593 ft | Copperas-Duck |
|
Iowa River At Wapello, Ia
20 hours ago · USGS 05465500 |
9,370 cfs | 14.45 ft | 49°F | 72°F | 554 ft | Lower Iowa |
|
Cedar River At Cedar Rapids, Ia
20 hours ago · USGS 05464500 |
8,120 cfs | 5.79 ft | 62°F | 70°F | 712 ft | Middle Cedar |
|
Cedar River Near Conesville, Ia
20 hours ago · USGS 05465000 |
7,690 cfs | 8.63 ft | · | 72°F | 593 ft | Lower Cedar |
|
Des Moines River At Keosauqua, Ia
20 hours ago · USGS 05490500 |
5,830 cfs | 12.19 ft | 83°F | 72°F | 579 ft | Lower Des Moines |
|
Cedar River At Waterloo, Ia
20 hours ago · USGS 05464000 |
5,790 cfs | 7.19 ft | · | 68°F | 823 ft | Middle Cedar |
|
Cedar River At Cedar Falls, Ia
21 hours ago · USGS 05463050 |
5,220 cfs | 78.70 ft | · | 68°F | 853 ft | Middle Cedar |
|
Des Moines River At Ottumwa, Ia
20 hours ago · USGS 05489500 |
3,400 cfs | 2.73 ft | 82°F | 73°F | 635 ft | Lower Des Moines |
|
Des Moines River Near Tracy, Ia
20 hours ago · USGS 05488500 |
3,260 cfs | 3.66 ft | · | 72°F | 676 ft | Lower Des Moines |
|
Wapsipinicon River Near Anamosa, Ia
20 hours ago · USGS 05421740 |
3,050 cfs | 8.80 ft | · | 68°F | 779 ft | Lower Wapsipinicon |
|
Wapsipinicon River At Independence, Ia
20 hours ago · USGS 05421000 |
3,010 cfs | 7.16 ft | · | 68°F | 889 ft | Upper Wapsipinicon |
|
Des Moines River Near Pella, Ia
20 hours ago · USGS 05488110 |
2,630 cfs | 85.08 ft | 78°F | 71°F | 689 ft | Lower Des Moines |
|
Maquoketa River Near Maquoketa, Ia
20 hours ago · USGS 05418500 |
2,440 cfs | 13.33 ft | · | 68°F | 646 ft | Maquoketa |
|
Iowa River Near Lone Tree, Ia
20 hours ago · USGS 05455700 |
2,400 cfs | 6.72 ft | · | 71°F | 601 ft | Lower Iowa |
|
Wapsipinicon River Near De Witt, Ia
20 hours ago · USGS 05422000 |
2,390 cfs | 8.15 ft | · | 70°F | 646 ft | Lower Wapsipinicon |
|
Cedar River At Janesville, Ia
21 hours ago · USGS 05458500 |
2,310 cfs | 3.05 ft | · | 70°F | 859 ft | Upper Cedar |
|
Shell Rock River At Shell Rock, Ia
21 hours ago · USGS 05462000 |
2,130 cfs | 9.22 ft | · | 69°F | 882 ft | Shell Rock |
|
Skunk River At Augusta, Ia
21 hours ago · USGS 05474000 |
1,960 cfs | 3.47 ft | · | 72°F | 553 ft | Skunk |
|
Cedar River At Waverly, Ia
20 hours ago · USGS 05458300 |
1,760 cfs | 5.09 ft | 74°F | 69°F | 895 ft | Upper Cedar |
|
Des Moines River Blw Raccoon Riv At Des Moines, Ia
20 hours ago · USGS 05485500 |
1,530 cfs | 9.72 ft | · | 72°F | 779 ft | Lake Red Rock |
|
Iowa River At Iowa City, Ia
20 hours ago · USGS 05454500 |
1,420 cfs | 10.95 ft | · | 71°F | 643 ft | Lower Iowa |
|
Iowa River Below Coralville Dam Nr Coralville, Ia
20 hours ago · USGS 05453520 |
1,410 cfs | 50.22 ft | · | 70°F | 669 ft | Middle Iowa |
|
Iowa River At Marengo, Ia
20 hours ago · USGS 05453100 |
1,230 cfs | 7.66 ft | · | 69°F | 729 ft | Middle Iowa |
|
Iowa River Near Belle Plaine, Ia
20 hours ago · USGS 05452500 |
1,130 cfs | 7.40 ft | · | 68°F | 748 ft | Middle Iowa |
|
Des Moines River At 2nd Avenue, Ia
20 hours ago · USGS 05482000 |
1,010 cfs | 15.23 ft | 32°F | 72°F | 808 ft | Middle Des Moines |
|
Turkey River At Garber, Ia
20 hours ago · USGS 05412500 |
982 cfs | 7.32 ft | 73°F | 70°F | 646 ft | Turkey |
|
Cedar River At Charles City, Ia
20 hours ago · USGS 05457700 |
966 cfs | 3.46 ft | · | 69°F | 977 ft | Upper Cedar |
|
Nishnabotna River Above Hamburg, Ia
20 hours ago · USGS 06810000 |
962 cfs | 8.98 ft | · | 75°F | 904 ft | Nishnabotna |
|
South Skunk River Near Oskaloosa, Ia
20 hours ago · USGS 05471500 |
935 cfs | 10.15 ft | · | 71°F | 692 ft | South Skunk |
|
Des Moines River Near Stratford, Ia
20 hours ago · USGS 05481300 |
810 cfs | 5.65 ft | · | 68°F | 902 ft | Middle Des Moines |
|
Chariton River Near Rathbun, Ia
20 hours ago · USGS 06903900 |
796 cfs | 5.99 ft | · | 73°F | 855 ft | Upper Chariton |
|
Des Moines River Near Saylorville, Ia
20 hours ago · USGS 05481650 |
763 cfs | 2.69 ft | · | 71°F | 819 ft | Middle Des Moines |
|
Chariton River Near Moulton, Ia
21 hours ago · USGS 06904010 |
702 cfs | 22.50 ft | · | 75°F | 847 ft | Upper Chariton |
|
Upper Iowa River Near Dorchester, Ia
20 hours ago · USGS 05388250 |
619 cfs | 7.47 ft | · | 68°F | 668 ft | Upper Iowa |
|
Turkey River Above French Hollow Cr At Elkader, Ia
21 hours ago · USGS 05412020 |
557 cfs | 5.84 ft | · | 69°F | 726 ft | Turkey |
|
Big Sioux River At Akron, Ia
20 hours ago · USGS 06485500 |
502 cfs | 4.93 ft | · | 72°F | 1,151 ft | Lower Big Sioux |
|
West Nishnabotna River At Randolph, Ia
20 hours ago · USGS 06808500 |
500 cfs | 8.32 ft | 80°F | 73°F | 956 ft | West Nishnabotna |
|
West Fork Cedar River At Finchford, Ia
21 hours ago · USGS 05458900 |
484 cfs | 7.37 ft | · | 70°F | 859 ft | West Fork Cedar |
|
Raccoon River At 63rd Street At Des Moines, Ia
20 hours ago · USGS 05484650 |
465 cfs | 20.31 ft | · | 71°F | 797 ft | North Raccoon |
|
Little Sioux River Near Turin, Ia
20 hours ago · USGS 06607500 |
455 cfs | 6.95 ft | · | 70°F | 1,029 ft | Little Sioux |
|
South Skunk River At Colfax, Ia
21 hours ago · USGS 05471050 |
446 cfs | 8.38 ft | · | 71°F | 793 ft | South Skunk |
|
Raccoon River At Fleur Drive, Ia
21 hours ago · USGS 05484900 |
443 cfs | 1.25 ft | · | 72°F | 797 ft | North Raccoon |
|
Des Moines River At Fort Dodge, Ia
21 hours ago · USGS 05480500 |
439 cfs | 3.94 ft | · | 67°F | 974 ft | Middle Des Moines |
|
Volga River At Littleport, Ia
21 hours ago · USGS 05412400 |
427 cfs | 5.61 ft | · | 70°F | 694 ft | Turkey |
|
Raccoon River Near West Des Moines, Ia
21 hours ago · USGS 05484600 |
421 cfs | 26.44 ft | · | 71°F | 844 ft | North Raccoon |
|
North Fork Maquoketa River Near Fulton, Ia
20 hours ago · USGS 05418400 |
411 cfs | 3.43 ft | 39°F | 68°F | 689 ft | Maquoketa |
|
Raccoon River At Van Meter, Ia
20 hours ago · USGS 05484500 |
408 cfs | 2.67 ft | 32°F | 73°F | 862 ft | North Raccoon |
|
Upper Iowa River At Decorah, Ia
21 hours ago · USGS 05387500 |
398 cfs | 2.15 ft | · | 68°F | 854 ft | Upper Iowa |
|
Iowa River At Marshalltown, Ia
20 hours ago · USGS 05451500 |
385 cfs | 10.19 ft | · | 68°F | 853 ft | Middle Iowa |
|
Maquoketa River At Manchester, Ia
20 hours ago · USGS 05416900 |
375 cfs | 5.08 ft | · | 70°F | 920 ft | Maquoketa |
|
Upper Iowa River At Bluffton, Ia
21 hours ago · USGS 05387440 |
330 cfs | 3.71 ft | · | 68°F | 970 ft | Upper Iowa |
|
Turkey River Near Eldorado, Ia
21 hours ago · USGS 05411850 |
325 cfs | 5.66 ft | · | 68°F | 897 ft | Turkey |
|
Winnebago River At Mason City, Ia
20 hours ago · USGS 05459500 |
291 cfs | 5.57 ft | · | 67°F | 1,101 ft | Winnebago |
|
Wapsipinicon River Near Tripoli, Ia
21 hours ago · USGS 05420680 |
281 cfs | 8.70 ft | · | 69°F | 1,019 ft | Upper Wapsipinicon |
|
Thompson River At Davis City, Ia
20 hours ago · USGS 06898000 |
253 cfs | 1.64 ft | · | 72°F | 910 ft | Thompson |
|
Des Moines River At Humboldt, Ia
20 hours ago · USGS 05476750 |
240 cfs | 3.35 ft | · | 70°F | 1,066 ft | Upper Des Moines |
|
Black Hawk Creek At Hudson, Ia
21 hours ago · USGS 05463500 |
226 cfs | 6.68 ft | · | 68°F | 897 ft | Middle Cedar |
|
South Skunk River Below Squaw Creek Near Ames, Ia
20 hours ago · USGS 05471000 |
223 cfs | 10.68 ft | · | 69°F | 872 ft | South Skunk |
|
Little Sioux River At Correctionville, Ia
20 hours ago · USGS 06606600 |
218 cfs | 4.70 ft | · | 68°F | 1,106 ft | Little Sioux |
|
Wolf Creek Near Dysart, Ia
20 hours ago · USGS 05464220 |
213 cfs | 3.08 ft | · | 68°F | 835 ft | Middle Cedar |
|
East Nishnabotna River At Red Oak, Ia
20 hours ago · USGS 06809500 |
211 cfs | 5.90 ft | · | 73°F | 1,013 ft | East Nishnabotna |
|
North Skunk River Near Sigourney, Ia
20 hours ago · USGS 05472500 |
180 cfs | 4.47 ft | · | 71°F | 664 ft | North Skunk |
|
Nodaway River At Clarinda, Ia
20 hours ago · USGS 06817000 |
174 cfs | 10.83 ft | · | 74°F | 966 ft | West Nodaway |
|
Little Cedar River Near Ionia, Ia
21 hours ago · USGS 05458000 |
169 cfs | 4.03 ft | · | 69°F | 1,000 ft | Upper Cedar |
|
Boyer River At Logan, Ia
20 hours ago · USGS 06609500 |
159 cfs | 3.59 ft | · | 71°F | 1,014 ft | Boyer |
|
South Raccoon River At Redfield, Ia
21 hours ago · USGS 05484000 |
147 cfs | 2.42 ft | 32°F | 73°F | 917 ft | South Raccoon |
|
Cedar Creek Near Oakland Mills, Ia
20 hours ago · USGS 05473400 |
145 cfs | 3.55 ft | · | 71°F | 590 ft | Skunk |
|
East Fork Des Moines River At Dakota City, Ia
20 hours ago · USGS 05479000 |
140 cfs | 7.87 ft | · | 70°F | 1,043 ft | East Fork Des Moines |
|
Floyd River At James, Ia
20 hours ago · USGS 06600500 |
137 cfs | 8.18 ft | · | 68°F | 1,117 ft | Floyd |
|
Beaver Creek At New Hartford, Ia
20 hours ago · USGS 05463000 |
131 cfs | 2.17 ft | · | 67°F | 890 ft | Middle Cedar |
|
Salt Creek Near Elberon, Ia
20 hours ago · USGS 05452000 |
131 cfs | 6.46 ft | · | 68°F | 802 ft | Middle Iowa |
|
Middle River Near Indianola, Ia
20 hours ago · USGS 05486490 |
131 cfs | 7.57 ft | · | 71°F | 794 ft | Lake Red Rock |
|
North River Near Norwalk, Ia
20 hours ago · USGS 05486000 |
126 cfs | 6.40 ft | · | 71°F | 811 ft | Lake Red Rock |
|
West Nishnabotna River At Hancock, Ia
20 hours ago · USGS 06807410 |
122 cfs | 1.99 ft | · | 71°F | 1,089 ft | West Nishnabotna |
|
Indian Creek Near Mingo, Ia
20 hours ago · USGS 05471200 |
120 cfs | 3.74 ft | · | 70°F | 827 ft | South Skunk |
|
Squaw Creek At Ames, Ia
20 hours ago · USGS 05470500 |
120 cfs | 1.87 ft | · | 69°F | 907 ft | South Skunk |
|
Little Sioux River At Linn Grove, Ia
20 hours ago · USGS 06605850 |
118 cfs | 4.84 ft | · | 66°F | 1,249 ft | Little Sioux |
|
South Skunk River Near Ames, Ia
20 hours ago · USGS 05470000 |
116 cfs | 3.36 ft | · | 72°F | 928 ft | South Skunk |
|
English River At Kalona, Ia
20 hours ago · USGS 05455500 |
116 cfs | 4.17 ft | · | 71°F | 655 ft | Lower Iowa |
|
Yellow River At Ion, Ia
21 hours ago · USGS 05389000 |
113 cfs | 5.71 ft | · | 66°F | 681 ft | Coon-Yellow |
|
Maple River At Mapleton, Ia
20 hours ago · USGS 06607200 |
107 cfs | 4.40 ft | · | 69°F | 1,114 ft | Maple |
|
North Raccoon River Near Jefferson, Ia
20 hours ago · USGS 05482500 |
97 cfs | 4.83 ft | 37°F | 71°F | 978 ft | North Raccoon |
|
Rock River Near Rock Valley, Ia
20 hours ago · USGS 06483500 |
86 cfs | 4.26 ft | · | 70°F | 1,238 ft | Rock |
|
Monona-Harrison Ditch Near Turin, Ia
20 hours ago · USGS 06602400 |
83 cfs | 4.67 ft | · | 70°F | 1,021 ft | Monona-Harrison Ditch |
|
Turkey River At Spillville, Ia
20 hours ago · USGS 05411600 |
83 cfs | 2.27 ft | · | 68°F | 1,067 ft | Turkey |
|
South River Near Ackworth, Ia
20 hours ago · USGS 05487470 |
73 cfs | 5.38 ft | · | 72°F | 805 ft | Lake Red Rock |
|
Old Mans Creek Near Iowa City, Ia
20 hours ago · USGS 05455100 |
70 cfs | 2.04 ft | 46°F | 71°F | 654 ft | Lower Iowa |
|
Boone River Near Webster City, Ia
20 hours ago · USGS 05481000 |
65 cfs | 1.89 ft | 35°F | 68°F | 1,028 ft | Boone |
|
Middle Raccoon River At Panora, Ia
20 hours ago · USGS 05483600 |
64 cfs | 4.18 ft | 35°F | 72°F | 997 ft | South Raccoon |
|
Iowa River Near Rowan, Ia
20 hours ago · USGS 05449500 |
64 cfs | 3.74 ft | · | 69°F | 1,187 ft | Upper Iowa |
|
East Nishnabotna River Near Atlantic, Ia
20 hours ago · USGS 06809210 |
64 cfs | 2.39 ft | · | 70°F | 1,109 ft | East Nishnabotna |
|
Soldier River At Pisgah, Ia
20 hours ago · USGS 06608500 |
63 cfs | 2.61 ft | · | 70°F | 1,047 ft | Blackbird-Soldier |
|
Fourmile Creek At Des Moines, Ia
20 hours ago · USGS 05485640 |
62 cfs | 4.04 ft | · | 71°F | 813 ft | Lake Red Rock |
|
White Breast Creek Near Dallas, Ia
20 hours ago · USGS 05487980 |
61 cfs | 6.45 ft | · | 72°F | 773 ft | Lake Red Rock |
|
Timber Creek Near Marshalltown, Ia
20 hours ago · USGS 05451700 |
54 cfs | 2.58 ft | · | 68°F | 862 ft | Middle Iowa |
|
Big Bear Creek At Ladora, Ia
20 hours ago · USGS 05453000 |
50 cfs | 10.97 ft | · | 69°F | 771 ft | Middle Iowa |
|
Middle Raccoon River Near Bayard, Ia
20 hours ago · USGS 05483450 |
41 cfs | 8.85 ft | · | 72°F | 1,054 ft | South Raccoon |
|
South Fork Iowa River Ne Of New Providence, Ia
21 hours ago · USGS 05451210 |
39 cfs | 2.45 ft | · | 70°F | 963 ft | Upper Iowa |
|
Chariton River Near Chariton, Ia
21 hours ago · USGS 06903400 |
37 cfs | 5.50 ft | · | 72°F | 968 ft | Upper Chariton |
|
North Raccoon River Near Sac City, Ia
20 hours ago · USGS 05482300 |
33 cfs | 6.63 ft | 75°F | 67°F | 1,179 ft | North Raccoon |
|
Beaver Creek Near Grimes, Ia
20 hours ago · USGS 05481950 |
32 cfs | 3.15 ft | · | 70°F | 829 ft | Middle Des Moines |
|
Ocheyedan River Near Spencer, Ia
20 hours ago · USGS 06605000 |
31 cfs | 1.82 ft | · | 65°F | 1,317 ft | Little Sioux |
|
Cedar Creek Near Bussey, Ia
20 hours ago · USGS 05489000 |
31 cfs | 4.67 ft | · | 72°F | 696 ft | Lower Des Moines |
|
South Fork Chariton River Near Promise City, Ia
20 hours ago · USGS 06903700 |
28 cfs | 3.32 ft | · | 75°F | 922 ft | Upper Chariton |
|
Fourmile Creek Near Ankeny, Ia
20 hours ago · USGS 05485605 |
27 cfs | 2.39 ft | · | 73°F | 911 ft | Lake Red Rock |
|
Walnut Creek At Des Moines, Ia
21 hours ago · USGS 05484800 |
24 cfs | 3.56 ft | · | 72°F | 808 ft | North Raccoon |
|
Bloody Run Creek Near Marquette, Ia
20 hours ago · USGS 05389400 |
21 cfs | 4.18 ft | · | 69°F | 634 ft | Coon-Yellow |
|
Floyd River At Alton, Ia
20 hours ago · USGS 06600100 |
18 cfs | 5.24 ft | · | 66°F | 1,289 ft | Floyd |
|
Rock River Below Tom Creek At Rock Rapids, Ia
20 hours ago · USGS 06483290 |
16 cfs | 6.53 ft | · | 70°F | 1,316 ft | Rock |
|
Clear Creek Near Coralville, Ia
20 hours ago · USGS 05454300 |
15 cfs | · | · | 70°F | 660 ft | Lower Iowa |
|
Walnut Creek Near Hartwick, Ia
20 hours ago · USGS 05452200 |
13 cfs | · | · | 68°F | 806 ft | Middle Iowa |
|
Big Creek Near Mt. Pleasant, Ia
21 hours ago · USGS 05473450 |
11 cfs | 3.32 ft | · | 71°F | 672 ft | Skunk |
|
Richland Creek Near Haven, Ia
20 hours ago · USGS 05451900 |
10 cfs | 10.36 ft | · | 68°F | 817 ft | Middle Iowa |
|
Clear Creek Near Oxford, Ia
21 hours ago · USGS 05454220 |
10 cfs | 1.67 ft | · | 70°F | 722 ft | Lower Iowa |
|
East Fork 102 River At Bedford, Ia
21 hours ago · USGS 06819185 |
8 cfs | 10.79 ft | · | 72°F | 1,084 ft | One Hundred And Two |
|
English Creek Near Knoxville, Ia
20 hours ago · USGS 05488200 |
6 cfs | 8.17 ft | · | 72°F | 749 ft | Lower Des Moines |
|
Rapid Creek Near Iowa City, Ia
20 hours ago · USGS 05454000 |
5 cfs | 3.85 ft | · | 70°F | 688 ft | Lower Iowa |
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Flow report FAQ
About Iowa streamflow
What are river levels like in Iowa right now?
As of August 10, 2026, Iowa rivers are running at 136% of normal across 117 USGS streamgauges, and the Mississippi River At Clinton is reporting the highest discharge at 38,700 cfs. The full sortable gauge table is below.
Which Iowa river is running highest right now?
As of August 10, 2026, the highest discharge in Iowa is 38,700 cfs on the Mississippi River At Clinton. See the sortable gauge table for the full statewide ranking.
Are Iowa rivers high or low right now?
Compare the statewide percent-of-normal on this page: above 100% means Iowa 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 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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