USGS Streamgage 09328910
San Rafael River at Mouth near Green River, UT
San Rafael River at Mouth near Green River, UT is USGS streamgage 09328910 in Utah, monitoring river discharge in hydrologic subbasin 14060009. It drains a watershed of about 3,123 square miles. Discharge records at this site go back to 2015. Typical flow runs near 14.1 cfs in July and 29.1 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Utah
- Drainage area
- 3,123 sq mi
- Gauge elevation
- 4,017 ft
- Subbasin (HUC-8)
- 14060009
- Coordinates
- 38.75776, -110.14353
- USGS site number
- 09328910
- Records begin
- 2015-07-16 (11 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 11 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 | 7 | 15.3 | 38.6 | |
| February | 10.4 | 24.7 | 71.9 | |
| March | 11.8 | 26.2 | 121 | |
| April | 3.8 | 29.1 | 196.7 | |
| May | 2.2 | 57.3 | 419.9 | |
| June | 0 | 58.1 | 818.3 | |
| July | 0 | 14.1 | 318.9 | |
| August | 0.1 | 11.9 | 133.9 | |
| September | 0 | 7.7 | 147 | |
| October | 0.4 | 15 | 243 | |
| November | 1.4 | 21.8 | 42.2 | |
| December | 3 | 15.3 | 45.9 |
All values in cubic feet per second (cfs).