Rivers in Iowa

East Nishnabotna River near Atlantic

Cass County, IowaNWS ATCI4USGS 06809210Des Moines office

Below flood stage
5.24ftStage

Observed Sat, Sep 26, 4:00 PM CDT

Flood stage
19.00 ft
Record crest
27.49 ft1958

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood24.00 ft
Moderate flood23.00 ft
Minor flood19.00 ft
Action15.00 ft
  1. 22.80 ftWater affects Lansing Rd on both sides of the river.
  2. 21.00 ftFlooding occurs in Atlantic. Widespread agricultural flooding occurs.
  3. 20.50 ftWater affects US 6.
  4. 19.00 ftWater affects agricultural land.
  5. 17.00 ftWater affects low-lying areas west of Atlantic.

Flood outlook

Chance of flooding, September to November

CategoryChance
Minor flooding10%
Moderate floodingUnder 5%
Major floodingUnder 5%

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

Crest history

70 crests on NOAA’s list since 1958.

#DateStage
1July 2, 195827.49 ft
2March 1, 196525.43 ft
3June 22, 196423.16 ft
4June 12, 196622.86 ft
5September 12, 197222.81 ft
6March 17, 196922.65 ft
7June 15, 199822.36 ft
8March 2, 197021.00 ft
9May 6, 200720.05 ft
10June 12, 196719.37 ft
11May 29, 196219.34 ft
12March 14, 201919.03 ft
13June 12, 200818.74 ft
14March 4, 196318.58 ft
15March 18, 197918.42 ft
16June 14, 199118.39 ft
17February 22, 196118.08 ft
18September 8, 198917.95 ft
19February 19, 197117.35 ft
20August 30, 199317.34 ft
21May 23, 200417.10 ft
22June 27, 201016.99 ft
23March 11, 196316.50 ft
24June 15, 198016.50 ft
25December 14, 201515.93 ft

Most recent crests

  • August 10, 2025: 5.57 ft
  • May 21, 2024: 12.11 ft
  • February 27, 2023: 10.52 ft
  • June 15, 2022: 10.45 ft
  • July 11, 2021: 5.17 ft
  • October 11, 2019: 10.29 ft
  • March 14, 2019: 19.03 ft
  • June 11, 2018: 9.77 ft
  • August 21, 2017: 12.39 ft
  • December 14, 2015: 15.93 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.

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.