Let’s Go Fishing Guide Service - Clear Lake, IA
South Fork Iowa River near Let’s Go Fishing Guide Service - Clear Lake, IA
About this river
South Fork Iowa River is a 16.3 mile river near Let’s Go Fishing Guide Service - Clear Lake, IA in Iowa. Streamflow is measured at the USGS gauge South Fork Iowa River NE of New Providence, IA (site 05451210). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1996 to 2026
South Fork Iowa River typically runs highest in May, at a median 258 cfs, and lowest in September, at 12 cfs. The highest flow on record for any single day is 6,410 cfs, in 2014.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 26 | 7.7 to 64 | |
| February | 41 | 13 to 90 | |
| March | 135 | 60 to 298 | |
| April | 175 | 79 to 320 | |
| May | 258 | 149 to 473 | |
| June | 251 | 124 to 449 | |
| July | 96 | 54 to 204 | |
| August | 20 | 11 to 62 | |
| September | 12 | 4.5 to 51 | |
| October | 24 | 4.1 to 109 | |
| November | 36 | 8.5 to 118 | |
| December | 31 | 7.3 to 92 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 31 years of record. Statistics published by the US Geological Survey for South Fork Iowa River NE of New Providence, IA (site 05451210). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
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