RIVER GAUGE · GRACE COOLIDGE CREEK
Grace Coolidge Creek near Custer
Custer County, South Dakota
Water level6.55 ft
Flow0 cfs
Last readingSep 16, 2026, 5:00 PM UTC (last recorded)
Action8 ft66 cfs
Minor flood9.5 ft321 cfs
Moderate flood10 ft417 cfs
Major flood11 ft659 cfs
The past week
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What floods at each level
- 11 ft
Major Flood Stage. Extensive inundation of structures and roads possible due to flooding on Grace Coolidge Creek.
- 10 ft
Moderate Flood Stage. Some inundation of structures and roads along Grace Coolidge Creek.
- 9.5 ft
Minor Flood Stage. Minor flooding along Grace Coolidge Creek. Low lying roads in Custer State Park may become impassable.
- 8.5 ft
Grace Coolidge Creek begins to overflow roads in Custer State Park.
- 8 ft
Low land flooding along the creek begins.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Feb 8, 1979 | 12.76 ft | — |
| May 7, 1995 | 11.39 ft | 765 cfs |
| Jun 14, 1976 | 10.9 ft | 980 cfs |
Get an alert when Grace Coolidge Creek rises
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