USGS Streamgage 09171100
Dolores River near Bedrock, CO
Dolores River near Bedrock, CO is USGS streamgage 09171100 in Colorado, monitoring river discharge in hydrologic subbasin 14030002. It drains a watershed of about 2,147 square miles. Discharge records at this site go back to 1970. Typical flow runs near 64.7 cfs in July and 156.4 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Colorado
- Drainage area
- 2,147 sq mi
- Gauge elevation
- 4,941 ft
- Subbasin (HUC-8)
- 14030002
- Coordinates
- 38.35692, -108.83345
- USGS site number
- 09171100
- Records begin
- 1970-09-06 (56 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 42 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 | 23.1 | 45.2 | 89.8 | |
| February | 30.8 | 53.9 | 127 | |
| March | 33.9 | 78.2 | 449.1 | |
| April | 29.2 | 156.4 | 1,741.4 | |
| May | 23.5 | 184.7 | 2,698.4 | |
| June | 7 | 107.9 | 1,388.8 | |
| July | 11.8 | 64.7 | 240.7 | |
| August | 17.2 | 66.5 | 180.4 | |
| September | 17.3 | 52.3 | 166.3 | |
| October | 21.4 | 49.8 | 131.9 | |
| November | 24.9 | 45.2 | 95.2 | |
| December | 22.6 | 41.6 | 88.5 |
All values in cubic feet per second (cfs).