USGS Streamgage 09172500
San Miguel River near Placerville, CO
San Miguel River near Placerville, CO is USGS streamgage 09172500 in Colorado, monitoring river discharge in hydrologic subbasin 14030003. It drains a watershed of about 309 square miles. Discharge records at this site go back to 1909. Typical flow runs near 341.8 cfs in July and 187.8 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Colorado
- Drainage area
- 309 sq mi
- Gauge elevation
- 7,110 ft
- Subbasin (HUC-8)
- 14030003
- Coordinates
- 38.03071, -108.11029
- USGS site number
- 09172500
- Records begin
- 1909-09-05 (117 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 116 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 | 43.7 | 60.1 | 79.5 | |
| February | 46.6 | 61.3 | 80.8 | |
| March | 52.6 | 71.1 | 124.5 | |
| April | 92.2 | 187.8 | 417 | |
| May | 238.7 | 480.1 | 952.5 | |
| June | 329.4 | 723.3 | 1,254.3 | |
| July | 144.4 | 341.8 | 782 | |
| August | 90.7 | 179.1 | 350.7 | |
| September | 74.3 | 113.7 | 235.1 | |
| October | 66.1 | 97.1 | 172.9 | |
| November | 56.9 | 77.5 | 114.6 | |
| December | 47 | 62.5 | 88.5 |
All values in cubic feet per second (cfs).