USGS Streamgage 06478600
East Fork Vermillion River near Parker, SD
East Fork Vermillion River near Parker, SD is USGS streamgage 06478600, monitoring river discharge in hydrologic subbasin 10170102. It drains a watershed of about 924 square miles. Discharge records at this site go back to 1995. Typical flow runs near 31.8 cfs in July and 87 cfs in April, with the higher of the two arriving in April.
Gauge details
- Drainage area
- 924 sq mi
- Gauge elevation
- 1,334 ft
- Subbasin (HUC-8)
- 10170102
- Coordinates
- 43.44528, -97.10944
- USGS site number
- 06478600
- Records begin
- 1995-10-01 (31 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 31 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 | 3.1 | 13.6 | 56.7 | |
| February | 3.3 | 15.8 | 138.6 | |
| March | 11.2 | 55.9 | 689.9 | |
| April | 19.1 | 87 | 857.8 | |
| May | 21.7 | 88 | 697.6 | |
| June | 12 | 64.7 | 640.3 | |
| July | 8.8 | 31.8 | 378.5 | |
| August | 6.6 | 19.8 | 207.1 | |
| September | 4.8 | 13.6 | 198.1 | |
| October | 4.9 | 17.5 | 228.9 | |
| November | 5 | 16.4 | 207.1 | |
| December | 3.9 | 16.6 | 92.2 |
All values in cubic feet per second (cfs).