Rivers in South Dakota

Snake Creek near Ashton

Spink County, South DakotaNWS SNKS2USGS 06473700Aberdeen office

Below flood stage
2.24ftStage

Observed Wed, Sep 30, 4:45 PM CDT

Flood stage
11.50 ft
Record crest
20.74 ft1997

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood16.00 ft
Moderate flood13.00 ft
Minor flood11.50 ft
Action9.50 ft
  1. 21.00 ftThe Highway 281 bridge at the gauge and the bridge 2 miles west of Ashton are both overtopped
  2. 19.00 ftThe water reaches the bottom of the Highway 281 bridge at the gauge
  3. 18.00 ftThe water reaches the bottom of the bridge 2 miles west of Ashton
  4. 15.50 ftThe bridges 1 mile east and 1 mile northwest of the gauge are both overtopped
  5. 13.00 ftThe water reaches the bottom of the bridge 1 mile east of the gauge and the bridge 1 mile northwest of the gauge

Flood outlook

Chance of flooding, October to December

CategoryChance
Minor flooding11%
Moderate flooding10%
Major flooding7%

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued September 23, 2026.

Crest history

27 crests on NOAA’s list since 1956.

#DateStage
1April 1, 199720.74 ft
2March 20, 201019.79 ft
3March 24, 201117.45 ft
4April 10, 196917.21 ft
5April 22, 201916.25 ft
6March 31, 197816.20 ft
7March 19, 197213.97 ft
8March 20, 196613.69 ft
9March 30, 198912.87 ft
10April 9, 196012.87 ft
11March 31, 196212.87 ft
12March 16, 198611.95 ft
13March 23, 197910.98 ft
14March 9, 196710.15 ft
15March 16, 19779.04 ft
16May 12, 19648.26 ft
17May 24, 19658.04 ft
18March 21, 19857.66 ft
19March 29, 19587.60 ft
20April 20, 19707.57 ft
21April 25, 19687.55 ft
22March 21, 19617.22 ft
23June 28, 19577.12 ft
24June 29, 19565.57 ft
25March 15, 19715.50 ft

Most recent crests

  • April 22, 2019: 16.25 ft
  • March 24, 2011: 17.45 ft
  • March 20, 2010: 19.79 ft
  • April 1, 1997: 20.74 ft
  • March 30, 1989: 12.87 ft
  • April 3, 1987: 5.21 ft
  • March 16, 1986: 11.95 ft
  • March 21, 1985: 7.66 ft
  • March 23, 1979: 10.98 ft
  • March 31, 1978: 16.20 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Missouri Basin River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time. Gauge reading may be affected by ice.

Sources

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.