USGS Streamgage 09328500
San Rafael River near Green River, UT
San Rafael River near Green River, UT is USGS streamgage 09328500 in Utah, monitoring river discharge in hydrologic subbasin 14060009. It drains a watershed of about 1,628 square miles. Discharge records at this site go back to 1909. Typical flow runs near 47.7 cfs in July and 37.5 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Utah
- Drainage area
- 1,628 sq mi
- Gauge elevation
- 4,196 ft
- Subbasin (HUC-8)
- 14060009
- Coordinates
- 38.85831, -110.37015
- USGS site number
- 09328500
- Records begin
- 1909-09-02 (117 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 117 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 | 13.7 | 31.3 | 65.3 | |
| February | 19.2 | 45.7 | 124.5 | |
| March | 21.9 | 51.7 | 176.6 | |
| April | 9.9 | 37.5 | 247.2 | |
| May | 6.8 | 102.4 | 666.8 | |
| June | 4.5 | 236.8 | 1,296.4 | |
| July | 0.4 | 47.7 | 387.6 | |
| August | 0.3 | 31 | 185.6 | |
| September | 0.2 | 27.3 | 147.5 | |
| October | 6 | 42 | 144.2 | |
| November | 15.1 | 41.4 | 102.2 | |
| December | 13.1 | 32.7 | 75.4 |
All values in cubic feet per second (cfs).