RIVER GAUGE · SOUTH FORK WHETSTONE RIVER
South Fork Whetstone River near Milbank
Grant County, South Dakota
Water level1104.25 ft
Flow0 cfs
Last readingSep 16, 2026, 4:15 PM UTC (last recorded)
Action1110 ft
Minor flood1113 ft
Moderate flood1115 ft
Major flood1117 ft
The past week
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What floods at each level
- 1117 ft
479th Avenue begins to flood.
- 1115 ft
148th Street begins to flood, water reaches the bottom of the bridge on 479th Avenue, and there is major agricultural flooding.
- 1113 ft
Water reaches the bottom of the bridge on 148th Street.
- 1110 ft
The lower banks overtop with minor agricultural flooding.
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