USGS Streamgage 06442900
Elm Creek near Gann Valley, SD
Elm Creek near Gann Valley, SD is USGS streamgage 06442900, monitoring river discharge in hydrologic subbasin 10140105. It drains a watershed of about 378 square miles. Discharge records at this site go back to 1987. Typical flow runs near 2.2 cfs in July and 12.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 378 sq mi
- Gauge elevation
- 1,590 ft
- Subbasin (HUC-8)
- 10140105
- Coordinates
- 44.07746, -99.1511
- USGS site number
- 06442900
- Records begin
- 1987-10-01 (39 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 39 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 0 | 0.3 | 4.7 | |
| February | 0 | 3.4 | 118.6 | |
| March | 0.5 | 11.7 | 493 | |
| April | 0.4 | 12.5 | 255.4 | |
| May | 0.3 | 10.4 | 179.8 | |
| June | 0 | 4.5 | 105.1 | |
| July | 0 | 2.2 | 30.5 | |
| August | 0 | 0.4 | 14.9 | |
| September | 0 | 0.1 | 6.7 | |
| October | 0 | 0.2 | 13.6 | |
| November | 0 | 0.4 | 15.4 | |
| December | 0 | 0.2 | 6.2 |
All values in cubic feet per second (cfs).