RIVER GAUGE · NORTH FORK WHETSTONE RIVER
North Fork Whetstone River near Milbank
Grant County, South Dakota
Water level1049.72 ft
Flow0 cfs
Last readingSep 16, 2026, 5:15 PM UTC (last recorded)
Action1054 ft
Minor flood1056 ft
Moderate flood1060 ft
Major flood1062 ft
The past week
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What floods at each level
- 1064 ft
The bridges are overtopped on 145th Street and 480th Avenue.
- 1063 ft
The intersection of 145th Street and 480th Avenue begins to flood, and 144th Street begins to flood.
- 1062 ft
Water reaches the top of the bridge on 144th Street.
- 1060 ft
Water reaches the bottom of the bridges on 145th Street and 480th Avenue.
- 1056 ft
Significant agricultural flooding begins.
- 1054 ft
The low water crossing on 479th Avenue begins to flood.
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