East Nishnabotna River near Atlantic, IA
River level and flood forecast · Cass County
Normal4.3 ftas of Mon 3 PM
The river is 14.8 ft below flood stage (19 ft).
Flow: 508 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Thu, Oct 1, 8:54 PM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 24 ft |
| Moderate flood stage | 23 ft |
| Flood stage | 19 ft |
| Action stage | 15 ft |
| Record crest (July 2, 1958) | 27.49 ft |
What floods at each level
From the National Weather Service, highest first.
- 22.8 ftWater affects Lansing Rd on both sides of the river.
- 21 ftFlooding occurs in Atlantic. Widespread agricultural flooding occurs.
- 20.5 ftWater affects US 6.
- 19 ftWater affects agricultural land.
- 17 ftWater affects low-lying areas west of Atlantic.
Highest crests on record
- 27.49 ft — July 2, 1958
- 25.43 ft — March 1, 1965
- 23.16 ft — June 22, 1964
- 22.86 ft — June 12, 1966
- 22.81 ft — September 12, 1972
Recent crests: 5.57 ft (August 10, 2025) · 12.11 ft (May 21, 2024) · 10.52 ft (February 27, 2023) · 10.45 ft (June 15, 2022) · 5.17 ft (July 11, 2021)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (ATCI4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.