South Dakota River Levels & Streamflow
As of Oct 1, 2026, South Dakota rivers are running at 50% of normal across 93 USGS gauges — the highest is 455 cfs on the Big Sioux R At North Cliff Ave At Sioux Falls Sd. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in South Dakota.
South Dakota river map
See South Dakota’s rivers on a live map
Every gauge, river and reservoir, one tap each:
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South Dakota river conditions today
Where rivers are running versus normal, what’s spiking and what’s coming — refreshed daily from USGS and NOAA.
Streamflow levels across South Dakota are currently 50% of normal, with the Big Sioux R At North Cliff Ave At Sioux Falls Sd reporting the highest discharge in the state at 455 cfs and a gauge stage of 5.87 ft.
Meanwhile, the Big Sioux R At North Cliff Ave At Sioux Falls Sd is seeing a spike today — up 39% 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 South Dakota's named rivers.
How South Dakota’s rivers compare to normal
Every gauge placed by its own percent of normal, and three years of the statewide trend.
Where every gauge actually sits
One dot per South Dakota 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.
South Dakota streamflow, three water years
Statewide percent of normal, every day since Sep 2023. The dotted line is normal.
799 daily readings from 87 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 250%: 100 readings above that — including the 469% peak in Dec 2025 — 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.
South Dakota flow report
| Streamgage | Streamflow | Gage height | Water temp | Air temp | Elevation | Watershed |
|---|---|---|---|---|---|---|
|
Big Sioux R At North Cliff Ave At Sioux Falls Sd, Sd
14 hours ago · USGS 06482020 |
380 cfs | 5.67 ft | · | 57°F | 1,303 ft | Lower Big Sioux |
|
Grand R At Little Eagle Sd, Sd
15 hours ago · USGS 06357800 |
308 cfs | 3.81 ft | · | 48°F | 1,640 ft | Grand |
|
James River Nr Yankton Sd, Sd
14 hours ago · USGS 06478513 |
284 cfs | 3.73 ft | · | 63°F | 1,164 ft | Lower James |
|
Big Sioux R Near Dell Rapids Sd, Sd
14 hours ago · USGS 06481000 |
231 cfs | 3.79 ft | · | 56°F | 1,464 ft | Lower Big Sioux |
|
James R Near Scotland Sd, Sd
14 hours ago · USGS 06478500 |
218 cfs | 4.54 ft | · | 59°F | 1,187 ft | Lower James |
|
White R Near Oacoma Sd, Sd
14 hours ago · USGS 06452000 |
205 cfs | 8.22 ft | · | 59°F | 1,394 ft | Lower White |
|
James R At Huron Sd, Sd
14 hours ago · USGS 06476000 |
162 cfs | 9.22 ft | · | 54°F | 1,233 ft | Middle James |
|
Big Sioux River Near Brookings Sd, Sd
13 hours ago · USGS 06480000 |
159 cfs | 2.67 ft | · | 54°F | 1,562 ft | Lower Big Sioux |
|
James R Near Forestburg Sd, Sd
14 hours ago · USGS 06477000 |
155 cfs | 4.87 ft | · | 60°F | 1,214 ft | Lower James |
|
Inlet Canal Above Belle Fourche Reservoir Sd, Sd
15 hours ago · USGS 06434505 |
130 cfs | 4.86 ft | · | 50°F | 2,985 ft | Lower Belle Fourche |
|
Redwater River Above Belle Fourche Sd, Sd
14 hours ago · USGS 06433000 |
124 cfs | 3.04 ft | · | 50°F | 3,018 ft | Redwater |
|
James River At Nd-Sd State Line, Sd
14 hours ago · USGS 06470878 |
115 cfs | 87.76 ft | 32°F | 56°F | 1,290 ft | Upper James |
|
Big Sioux R At Sioux Falls Sd, Sd
14 hours ago · USGS 06482000 |
110 cfs | 1.68 ft | · | 62°F | 1,395 ft | Lower Big Sioux |
|
James R At Ashton Sd, Sd
13 hours ago · USGS 06473000 |
109 cfs | 3.77 ft | · | 57°F | 1,271 ft | Middle James |
|
Moreau R Near Whitehorse Sd, Sd
15 hours ago · USGS 06360500 |
106 cfs | 2.72 ft | · | 50°F | 1,670 ft | Lower Moreau |
|
Big Sioux River Near Bruce, Sd
13 hours ago · USGS 06479770 |
106 cfs | 3.50 ft | · | 53°F | 1,630 ft | Upper Big Sioux |
|
Little White R Near Rosebud Sd, Sd
14 hours ago · USGS 06449500 |
100 cfs | 4.12 ft | · | 53°F | 2,305 ft | Little White |
|
Little White R Below White River Sd, Sd
14 hours ago · USGS 06450500 |
97 cfs | 1.95 ft | · | 54°F | 1,927 ft | Little White |
|
Cheyenne R Near Plainview Sd, Sd
15 hours ago · USGS 06438500 |
87 cfs | 8.29 ft | 60°F | 52°F | 1,865 ft | Lower Cheyenne |
|
Bad R Near Fort Pierre Sd, Sd
15 hours ago · USGS 06441500 |
83 cfs | 1.30 ft | · | 53°F | 1,437 ft | Bad |
|
Little White R Near Vetal Sd, Sd
15 hours ago · USGS 06449100 |
82 cfs | 3.46 ft | 42°F | 55°F | 2,789 ft | Little White |
|
James R Near Redfield Sd, Sd
13 hours ago · USGS 06475000 |
80 cfs | 3.50 ft | · | 56°F | 1,264 ft | Middle James |
|
James R Near Stratford Sd, Sd
13 hours ago · USGS 06472000 |
67 cfs | 5.98 ft | · | 56°F | 1,276 ft | Upper James |
|
White River Near White River, Sd
14 hours ago · USGS 06447450 |
66 cfs | 3.65 ft | · | 53°F | 1,775 ft | Middle White |
|
Cheyenne R Near Buffalo Gap Sd, Sd
15 hours ago · USGS 06402600 |
63 cfs | 2.27 ft | · | 52°F | 2,820 ft | Middle Cheyenne-Spring |
|
Cheyenne River Near Wasta, Sd
15 hours ago · USGS 06423500 |
63 cfs | · | · | 52°F | 2,269 ft | Middle Cheyenne-Elk |
|
Keya Paha R At Wewela Sd, Sd
14 hours ago · USGS 06464500 |
54 cfs | 2.26 ft | · | 55°F | 2,053 ft | Keya Paha |
|
Cheyenne River At Redshirt, Sd
14 hours ago · USGS 06403700 |
53 cfs | 9.49 ft | 65°F | 52°F | 2,670 ft | Middle Cheyenne-Spring |
|
Belle Fourche R Near Sturgis Sd, Sd
15 hours ago · USGS 06437000 |
47 cfs | 2.56 ft | · | 52°F | 2,546 ft | Lower Belle Fourche |
|
White R Near Kadoka Sd, Sd
14 hours ago · USGS 06447000 |
44 cfs | 4.08 ft | · | 52°F | 2,131 ft | Middle White |
|
Rapid Cr Near Farmingdale Sd, Sd
15 hours ago · USGS 06421500 |
39 cfs | 5.65 ft | · | 52°F | 2,711 ft | Rapid |
|
Spearfish Cr At Spearfish Sd, Sd
15 hours ago · USGS 06431500 |
38 cfs | 4.82 ft | · | 48°F | 3,669 ft | Redwater |
|
Belle Fourche River Near Elm Springs, Sd
15 hours ago · USGS 06438000 |
34 cfs | 3.89 ft | · | 53°F | 2,180 ft | Lower Belle Fourche |
|
Vermillion River Nr Vermillion Sd, Sd
14 hours ago · USGS 06479010 |
33 cfs | 1.82 ft | · | 64°F | 1,137 ft | Vermillion |
|
White R Near Interior Sd, Sd
15 hours ago · USGS 06446500 |
33 cfs | 3.68 ft | · | 52°F | 2,300 ft | Middle White |
|
Skunk Cr At Sioux Falls Sd, Sd
14 hours ago · USGS 06481500 |
32 cfs | 2.69 ft | · | 57°F | 1,411 ft | Lower Big Sioux |
|
Redwater Cr At Wy-Sd State Line, Sd
15 hours ago · USGS 06430500 |
31 cfs | 2.93 ft | · | 47°F | 3,424 ft | Redwater |
|
Big Sioux R Near Castlewood Sd, Sd
13 hours ago · USGS 06479525 |
31 cfs | 4.81 ft | · | 52°F | 1,682 ft | Upper Big Sioux |
|
Rapid Cr Below Pactola Dam Sd, Sd
15 hours ago · USGS 06411500 |
30 cfs | 7.39 ft | · | 43°F | 4,420 ft | Rapid |
|
Rapid Cr At Rapid City Sd, Sd
15 hours ago · USGS 06414000 |
30 cfs | 3.34 ft | · | 52°F | 3,246 ft | Rapid |
|
Beaver Cr Near Buffalo Gap Sd, Sd
14 hours ago · USGS 06402500 |
27 cfs | 5.28 ft | · | 53°F | 3,161 ft | Middle Cheyenne-Spring |
|
Fall R At Hot Springs Sd, Sd
15 hours ago · USGS 06402000 |
26 cfs | · | · | 53°F | 3,430 ft | Middle Cheyenne-Spring |
|
Spearfish Creek Near Lead, Sd
15 hours ago · USGS 06430770 |
26 cfs | 7.54 ft | · | 40°F | 5,312 ft | Redwater |
|
Keya Paha R Near Keyapaha Sd, Sd
14 hours ago · USGS 06464100 |
26 cfs | 4.51 ft | · | 57°F | 2,220 ft | Keya Paha |
|
Rapid Cr Above Canyon Lake Near Rapid City Sd, Sd
15 hours ago · USGS 06412500 |
22 cfs | 1.84 ft | 35°F | 50°F | 3,416 ft | Rapid |
|
Rapid Cr Above Pactola Res At Silver City, Sd
15 hours ago · USGS 06410500 |
22 cfs | 4.57 ft | · | 42°F | 4,628 ft | Rapid |
|
White R Nr Ne-Sd State Line, Sd
14 hours ago · USGS 06445685 |
22 cfs | 3.92 ft | · | 52°F | 3,041 ft | Upper White |
|
Split Rock Cr At Corson Sd, Sd
14 hours ago · USGS 06482610 |
20 cfs | 2.01 ft | · | 61°F | 1,307 ft | Lower Big Sioux |
|
Belle Fourche R At Wy-Sd State Line, Sd
15 hours ago · USGS 06428500 |
18 cfs | 3.49 ft | · | 49°F | 3,103 ft | Lower Belle Fourche |
|
White R Near Oglala Sd, Sd
15 hours ago · USGS 06446000 |
17 cfs | 6.74 ft | · | 52°F | 2,880 ft | Upper White |
|
Lake Cr Below Refuge Near Tuthill Sd, Sd
15 hours ago · USGS 06449000 |
17 cfs | 3.02 ft | · | 53°F | 2,991 ft | Little White |
|
South Fork Grand R Near Cash Sd, Sd
15 hours ago · USGS 06356500 |
14 cfs | · | · | 47°F | 2,425 ft | South Fork Grand |
|
Moreau R Near Faith Sd, Sd
15 hours ago · USGS 06359500 |
13 cfs | · | · | 48°F | 2,248 ft | Lower Moreau |
|
Cheyenne R At Edgemont Sd, Sd
15 hours ago · USGS 06395000 |
12 cfs | 1.45 ft | · | 52°F | 3,422 ft | Angostura Reservoir |
|
Little Spearfish Creek Near Lead, Sd
15 hours ago · USGS 06430850 |
12 cfs | 4.76 ft | · | 43°F | 5,053 ft | Redwater |
|
Belle Fourche R Near Fruitdale Sd, Sd
15 hours ago · USGS 06436000 |
12 cfs | 1.67 ft | · | 50°F | 2,940 ft | Lower Belle Fourche |
|
Whetstone River Near Big Stone City, Sd
14 hours ago · USGS 05291000 |
10 cfs | 1.38 ft | · | 52°F | 1,017 ft | Upper Minnesota |
|
Castle Cr Below Deerfield Dam Sd, Sd
15 hours ago · USGS 06410000 |
10 cfs | 3.50 ft | · | 42°F | 5,795 ft | Rapid |
|
Little White R Near Martin Sd, Sd
15 hours ago · USGS 06447500 |
9 cfs | · | · | 52°F | 3,069 ft | Little White |
|
James R At Columbia Sd, Sd
14 hours ago · USGS 06471000 |
9 cfs | 4.25 ft | · | 56°F | 1,287 ft | Upper James |
|
Little Minnesota River Near Peever, Sd
14 hours ago · USGS 05290000 |
9 cfs | 9.89 ft | · | 51°F | 1,015 ft | Upper Minnesota |
|
Cleghorn Springs At Rapid City, Sd
15 hours ago · USGS 06412810 |
9 cfs | 2.64 ft | · | 50°F | 3,371 ft | Rapid |
|
Flandreau Cr Above Flandreau Sd, Sd
13 hours ago · USGS 06480650 |
8 cfs | 4.48 ft | · | 54°F | 1,571 ft | Lower Big Sioux |
|
Castle Cr Above Deerfield Res Near Hill City Sd, Sd
15 hours ago · USGS 06409000 |
8 cfs | 2.76 ft | · | 42°F | 5,929 ft | Rapid |
|
Elm R At Westport Sd, Sd
14 hours ago · USGS 06471500 |
7 cfs | 4.14 ft | · | 56°F | 1,323 ft | Elm |
|
East Fork Vermillion River Near Parker, Sd
14 hours ago · USGS 06478600 |
6 cfs | 5.10 ft | · | 62°F | 1,328 ft | Vermillion |
|
Bear In The Lodge Cr Near Wanblee Sd, Sd
15 hours ago · USGS 06446700 |
6 cfs | 1.54 ft | · | 52°F | 2,526 ft | Middle White |
|
Rhoads Fork Near Rochford Sd, Sd
15 hours ago · USGS 06408700 |
4 cfs | 3.72 ft | · | 42°F | 5,981 ft | Rapid |
|
Boxelder Cr Near Nemo Sd, Sd
14 hours ago · USGS 06422500 |
4 cfs | 1.20 ft | · | 43°F | 4,334 ft | Middle Cheyenne-Elk |
|
Whitewood Cr Above Whitewood, Sd
14 hours ago · USGS 06436180 |
3 cfs | · | · | 49°F | 3,681 ft | Lower Belle Fourche |
|
Big Sioux R Near Watertown Sd, Sd
14 hours ago · USGS 06479438 |
3 cfs | 3.96 ft | · | 56°F | 1,742 ft | Upper Big Sioux |
|
Battle Cr At Hermosa Sd, Sd
15 hours ago · USGS 06406000 |
3 cfs | 2.55 ft | · | 51°F | 3,284 ft | Middle Cheyenne-Spring |
|
Firesteel Cr Near Mount Vernon Sd, Sd
14 hours ago · USGS 06477500 |
2 cfs | 2.41 ft | · | 60°F | 1,304 ft | Lower James |
|
Bois De Sioux River Near White Rock, Sd
14 hours ago · USGS 05050000 |
2 cfs | 3.46 ft | · | 48°F | 968 ft | Bois De Sioux |
|
Little Missouri R At Camp Crook Sd, Sd
15 hours ago · USGS 06334500 |
2 cfs | 1.69 ft | · | 47°F | 3,102 ft | Upper Little Missouri |
|
French Cr Above Fairburn Sd, Sd
15 hours ago · USGS 06403300 |
2 cfs | · | · | 51°F | 3,825 ft | Middle Cheyenne-Spring |
|
Skunk Cr Nr Chester Sd, Sd
14 hours ago · USGS 06481480 |
1 cfs | · | · | 55°F | 1,563 ft | Lower Big Sioux |
|
Big Sioux R At Watertown Sd, Sd
14 hours ago · USGS 06479500 |
1 cfs | 3.27 ft | · | 52°F | 1,717 ft | Upper Big Sioux |
|
Bear Butte Creek Near Deadwood, Sd
14 hours ago · USGS 06437020 |
1 cfs | 3.65 ft | · | 45°F | 4,753 ft | Lower Belle Fourche |
|
Whitewood Creek Near Whitewood Sd, Sd
15 hours ago · USGS 06436190 |
1 cfs | 5.41 ft | · | 51°F | 3,173 ft | Lower Belle Fourche |
|
Big Sioux River Nr Florence Sd, Sd
14 hours ago · USGS 06479215 |
1 cfs | 3.00 ft | · | 56°F | 1,787 ft | Upper Big Sioux |
|
Platte Creek Near Platte, Sd
14 hours ago · USGS 06452320 |
1 cfs | 1.55 ft | · | 61°F | 1,373 ft | Fort Randall Reservoir |
|
Battle Cr Near Keystone Sd, Sd
15 hours ago · USGS 06404000 |
1 cfs | 3.31 ft | · | 50°F | 3,815 ft | Middle Cheyenne-Spring |
|
Grace Coolidge Cr Nr Game Lodge Nr Custer Sd, Sd
15 hours ago · USGS 06404998 |
1 cfs | 6.63 ft | · | 50°F | 4,125 ft | Middle Cheyenne-Spring |
|
Foot Creek Near Aberdeen, Sd
13 hours ago · USGS 06471800 |
0 cfs | 4.09 ft | · | 56°F | 1,329 ft | Upper James |
|
Elk Cr Near Elm Springs Sd, Sd
15 hours ago · USGS 06425500 |
0 cfs | 3.48 ft | · | 52°F | 2,322 ft | Middle Cheyenne-Elk |
|
North Fork Grand R Near White Butte Sd, Sd
14 hours ago · USGS 06355500 |
0 cfs | · | · | 47°F | 2,318 ft | North Fork Grand |
|
Hat Cr Near Edgemont Sd, Sd
15 hours ago · USGS 06400000 |
0 cfs | 6.60 ft | · | 53°F | 3,301 ft | Hat |
|
Battle Cr Below Hermosa Sd, Sd
15 hours ago · USGS 06406500 |
0 cfs | 1.85 ft | · | 52°F | 2,810 ft | Middle Cheyenne-Spring |
|
Spring Cr Near Keystone Sd, Sd
15 hours ago · USGS 06407500 |
0 cfs | 3.32 ft | · | 49°F | 3,898 ft | Middle Cheyenne-Spring |
|
Whitewood Cr Above Vale Sd, Sd
15 hours ago · USGS 06436198 |
0 cfs | · | · | 51°F | 2,857 ft | Lower Belle Fourche |
|
Murray Ditch Ab Headgate At Wy-Sd State Line, Sd
15 hours ago · USGS 06429997 |
0 cfs | · | · | 47°F | 3,457 ft | Redwater |
|
South Fork Bad R Near Cottonwood Sd, Sd
15 hours ago · USGS 06440200 |
0 cfs | 3.40 ft | · | 51°F | 2,253 ft | Bad |
About South Dakota streamflow
What are river levels like in South Dakota right now?
As of October 1, 2026, South Dakota rivers are running at 50% of normal across 93 USGS streamgauges, and the Big Sioux R At North Cliff Ave At Sioux Falls Sd is reporting the highest discharge at 455 cfs. The full sortable gauge table is below.
Which South Dakota river is running highest right now?
As of October 1, 2026, the highest discharge in South Dakota is 455 cfs on the Big Sioux R At North Cliff Ave At Sioux Falls Sd. See the sortable gauge table for the full statewide ranking.
Are South Dakota rivers high or low right now?
Compare the statewide percent-of-normal on this page: above 100% means South Dakota 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 South Dakota 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 South Dakota 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 South Dakota 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.