Rivers in South Dakota

James River near Yankton

Yankton County, South DakotaNWS YNNS2USGS 06478513Sioux Falls office

Below flood stage
3.72ftStage

Observed Thu, Sep 24, 9:00 PM CDT

Flood stage
12.00 ft
Record crest
27.84 ft2019

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood21.00 ft
Moderate flood16.00 ft
Minor flood12.00 ft
Action10.00 ft
  1. 28.00 ftWater reaches the bottom of the bridge on 309th St.
  2. 27.00 ftWater reaches the bottom of the railroad bridge near 309th St.
  3. 25.00 ftHwy 81 may be in danger of flooding. The bridge on 303rd St at the gauge will be overtopped
  4. 22.00 ft303rd St east of the gauge location begins to flood. Some levees protecting structures along the river may be in danger of being overtopped.
  5. 21.00 ftWater approaches Hwy 46 and may begin to overtop it.
  6. 18.50 ftSW Jim River Road near 305th Street begins flooding as does NE Jim River Rd near 300th St.
  7. 17.00 ftSW Jim River Road north of 303rd Street begins flooding.
  8. 16.00 ftSW Jim River Road near 301st St floods.
  9. 14.00 ftSignificant agricultural flooding with the floodplain roughly a mile wide in some areas.
  10. 12.00 ftAgricultural flooding begins off the left bank near the gauge.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding17%
Moderate flooding7%
Major floodingUnder 5%

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

Crest history

38 crests on NOAA’s list since 1982.

#DateStage
1September 14, 201927.84 ft
2June 23, 198424.34 ft
3April 9, 199722.94 ft
4March 20, 201022.75 ft
5March 28, 201122.24 ft
6June 25, 202422.17 ft
7April 14, 200121.95 ft
8May 30, 199521.46 ft
9July 8, 199321.15 ft
10April 18, 201920.30 ft
11March 29, 198719.98 ft
12April 22, 198619.71 ft
13April 1, 199416.87 ft
14March 20, 202016.18 ft
15March 31, 198513.25 ft
16May 30, 199913.20 ft
17February 27, 198312.61 ft
18June 9, 199612.50 ft
19May 5, 202311.65 ft
20June 2, 198211.40 ft
21April 20, 198910.72 ft
22June 22, 199110.70 ft
23May 14, 20129.67 ft
24May 5, 20169.20 ft
25June 20, 20228.60 ft

Most recent crests

  • August 8, 2025: 7.19 ft
  • June 25, 2024: 22.17 ft
  • May 5, 2023: 11.65 ft
  • June 20, 2022: 8.60 ft
  • March 27, 2021: 4.91 ft
  • March 20, 2020: 16.18 ft
  • September 14, 2019: 27.84 ft
  • April 18, 2019: 20.30 ft
  • June 13, 2017: 7.39 ft
  • May 5, 2016: 9.20 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 48 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 24 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.