RIVER GAUGE · WEST FORK LITTLE SIOUX RIVER
West Fork Little Sioux River near Lake Park
Dickinson County, Iowa
Water level1390.87 ft
Flow—
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action1395 ft
Minor flood1396 ft
Moderate flood1398 ft
Major flood1404 ft
The past week
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What floods at each level
- 1413.5 ft
The Highway 9 bridge is overtopped.
- 1411 ft
Water reaches the bottom of the Highway 9 bridge.
- 1408.5 ft
The bridge on 140th St is overtopped.
- 1406.5 ft
Water reaches the bottom of the bridge on 140th St.
- 1404 ft
The bridge on 160th Avenue south of Highway 9 is overtopped.
- 1402 ft
Water reaches the bottom of the bridge on 160th Ave
- 1400 ft
160th Avenue begins to flood south of Highway 9.
- 1398 ft
Significant amounts of crop and pasture land are flooded north of Highway 9, and 125th Street just east of the river northeast of Lake Park begins flooding.
- 1396 ft
Crop and pasture land begins to flood between Lake Park and Montgomery.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Jun 21, 2024 | 1400.01 ft | — |
| Jun 23, 2018 | 1399.4 ft | — |
| Mar 15, 2019 | 1398.79 ft | — |
Get an alert when West Fork Little Sioux River rises
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