USGS Streamgage 09165000
Dolores River below Rico, CO
Dolores River below Rico, CO is USGS streamgage 09165000 in Colorado, monitoring river discharge in hydrologic subbasin 14030002. It drains a watershed of about 106 square miles. Discharge records at this site go back to 1951. Typical flow runs near 93.2 cfs in July and 115.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Colorado
- Drainage area
- 106 sq mi
- Gauge elevation
- 8,444 ft
- Subbasin (HUC-8)
- 14030002
- Coordinates
- 37.63888, -108.06037
- USGS site number
- 09165000
- Records begin
- 1951-10-01 (75 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 75 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 | 9.5 | 16.4 | 28.2 | |
| February | 9.9 | 16.1 | 29.2 | |
| March | 14.2 | 26.5 | 64.4 | |
| April | 46.5 | 115.3 | 254.5 | |
| May | 175.8 | 399.5 | 785.5 | |
| June | 123.9 | 394.3 | 1,034.4 | |
| July | 39.1 | 93.2 | 378.8 | |
| August | 27.3 | 58.1 | 141.6 | |
| September | 22.4 | 40.1 | 117.7 | |
| October | 18.7 | 32.6 | 85.6 | |
| November | 13.7 | 23.2 | 49.8 | |
| December | 10.5 | 18.2 | 34.3 |
All values in cubic feet per second (cfs).