Shane Cowan Guide Service
Shane Cowan Guide Service is a fishing guide service based in Pierre, South Dakota.
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Typical flow by month
1929 to 2026
The water at Shane Cowan Guide Service typically runs highest in March, at a median 54 cfs, and lowest in January, at 0.0 cfs. The highest flow on record for any single day is 27,200 cfs, in 1942.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 0.0 | 0.0 to 0.8 | |
| February | 1.0 | 0.0 to 19 | |
| March | 54 | 4.3 to 271 | |
| April | 39 | 3.7 to 222 | |
| May | 30 | 2.7 to 155 | |
| June | 39 | 3.8 to 196 | |
| July | 6.1 | 0.1 to 39 | |
| August | 0.5 | 0.0 to 9.6 | |
| September | 0.0 | 0.0 to 1.8 | |
| October | 0.0 | 0.0 to 1.2 | |
| November | 0.0 | 0.0 to 1.4 | |
| December | 0.0 | 0.0 to 1.3 |
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 97 years of record. Statistics published by the US Geological Survey for Bad River near Fort Pierre, SD (site 06441500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Current conditions
High today
62°F
Wind
14 kt
Gusts 28 kt
Rain chance
2%
Week ahead
Forecast from Open-Meteo global models (NOAA & ECMWF). See full conditions →
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