USGS Streamgage 09342500
San Juan River at Pagosa Springs, CO
San Juan River at Pagosa Springs, CO is USGS streamgage 09342500 in Colorado, monitoring river discharge in hydrologic subbasin 14080101. It drains a watershed of about 281 square miles. Discharge records at this site go back to 1911. Typical flow runs near 215.9 cfs in July and 490.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Colorado
- Drainage area
- 281 sq mi
- Gauge elevation
- 7,056 ft
- Subbasin (HUC-8)
- 14080101
- Coordinates
- 37.26553, -107.011
- USGS site number
- 09342500
- Records begin
- 1911-07-02 (115 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 91 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 | 36.7 | 53.5 | 85.4 | |
| February | 40.7 | 58.5 | 99.9 | |
| March | 62.7 | 118.3 | 350.8 | |
| April | 205.3 | 490.2 | 1,060.8 | |
| May | 518.5 | 1,151 | 2,176.5 | |
| June | 295.6 | 1,051 | 2,440 | |
| July | 64.3 | 215.9 | 905.9 | |
| August | 41.9 | 122.4 | 356.4 | |
| September | 33.9 | 88.2 | 332.7 | |
| October | 42.2 | 89.7 | 309.2 | |
| November | 42.6 | 76 | 168.4 | |
| December | 37.4 | 57.8 | 107.2 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- San Juan River near Co Rd 119 at Pagosa Springs, CO
- San Juan River near Carracas, CO
- Los Pinos River above Vallecito Reservoir near Bayfield, CO
- Vallecito Creek near Bayfield, CO
- Los Pinos River near Ignacio, CO
- Los Pinos River at La Boca, CO
- San Juan River near Archuleta, NM
- Citizens Ditch at Bloomfield, NM