USGS Streamgage 09346400
San Juan River near Carracas, CO
San Juan River near Carracas, CO is USGS streamgage 09346400 in Colorado, monitoring river discharge in hydrologic subbasin 14080101. It drains a watershed of about 1,250 square miles. Discharge records at this site go back to 1961. Typical flow runs near 338.2 cfs in July and 797.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Colorado
- Drainage area
- 1,250 sq mi
- Gauge elevation
- 6,092 ft
- Subbasin (HUC-8)
- 14080101
- Coordinates
- 37.01362, -107.31228
- USGS site number
- 09346400
- Records begin
- 1961-11-01 (65 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 56 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 | 86.6 | 137.3 | 249.6 | |
| February | 96.8 | 158.7 | 318.3 | |
| March | 157.8 | 420.2 | 1,095.1 | |
| April | 361.9 | 797.3 | 1,804.7 | |
| May | 684.6 | 1,431 | 2,816.1 | |
| June | 287.6 | 1,253.9 | 3,089 | |
| July | 100.7 | 338.2 | 1,178.1 | |
| August | 62.6 | 227.6 | 549.3 | |
| September | 65.9 | 184.9 | 554.5 | |
| October | 97.9 | 193 | 583.9 | |
| November | 103.9 | 174.4 | 352.6 | |
| December | 87.7 | 141.5 | 286.6 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- 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
- San Juan River at Bloomfield, NM
- San Juan River at Bolack Ranch Brdg near Farmington, NM