RIVER GAUGE · SOUTH BRANCH RALSTON CREEK
South Branch Ralston Creek at Iowa City
Johnson County, Iowa
Water level1.89 ft
Flow7 cfs
Last readingSep 16, 2026, 4:45 PM UTC (last recorded)
Action6 ft
Minor flood7 ft
The past week
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What floods at each level
- 8 ft
Water is at the bottom of the Muscatine Avenue bridge.
- 7.5 ft
Water affects the northwest approach to the Muscatine Avenue bridge.
- 6 ft
Water is at the bottom of the 1st Avenue bridge.
- 4.5 ft
Water is at the bottom of the F Street bridge.
- 4 ft
Water is at the bottom of the Sixth Street bridge.
- 3.5 ft
Water affects the north approach to the Sixth Street bridge.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| Jul 13, 1962 | 10.5 ft | — |
| Oct 5, 2018 | 9.64 ft | — |
| May 3, 2012 | 9.48 ft | — |
Get an alert when South Branch Ralston Creek rises
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