USGS Streamgage 09174600
San Miguel River at Brooks Bridge near Nucla, CO
San Miguel River at Brooks Bridge near Nucla, CO is USGS streamgage 09174600 in Colorado, monitoring river discharge in hydrologic subbasin 14030003. It drains a watershed of about 743 square miles. Discharge records at this site go back to 1995. Typical flow runs near 174.3 cfs in July and 376.6 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Colorado
- Drainage area
- 743 sq mi
- Gauge elevation
- 5,581 ft
- Subbasin (HUC-8)
- 14030003
- Coordinates
- 38.24417, -108.50139
- USGS site number
- 09174600
- Records begin
- 1995-03-31 (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 | 37 | 62.9 | 98.5 | |
| February | 47.4 | 76.9 | 102.5 | |
| March | 40 | 101.8 | 397.7 | |
| April | 103.6 | 376.6 | 1,088.4 | |
| May | 161.3 | 541.1 | 1,305.2 | |
| June | 147.7 | 545.7 | 1,269.8 | |
| July | 7.8 | 174.3 | 594.9 | |
| August | 4.5 | 62.8 | 292.9 | |
| September | 4.2 | 22.5 | 197.6 | |
| October | 33.5 | 89.8 | 196 | |
| November | 44.5 | 78.1 | 120.9 | |
| December | 31.8 | 66.6 | 102.6 |
All values in cubic feet per second (cfs).