USGS Streamgage 09328000
San Rafael River near Castle Dale, Utah
San Rafael River near Castle Dale, Utah is USGS streamgage 09328000 in Utah, monitoring river discharge in hydrologic subbasin 14060009. It drains a watershed of about 939 square miles. Discharge records at this site go back to 1947. Typical flow runs near 62.8 cfs in July and 43.9 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Utah
- Drainage area
- 939 sq mi
- Gauge elevation
- 5,312 ft
- Subbasin (HUC-8)
- 14060009
- Coordinates
- 39.13823, -110.89065
- USGS site number
- 09328000
- Records begin
- 1947-10-01 (79 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 39 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 | 19.5 | 32.4 | 68.7 | |
| February | 24.1 | 48.1 | 125.6 | |
| March | 25.5 | 52.8 | 173.2 | |
| April | 16 | 43.9 | 289.4 | |
| May | 21.7 | 139.4 | 899.4 | |
| June | 30.6 | 297.6 | 1,762.7 | |
| July | 6.3 | 62.8 | 431.5 | |
| August | 3.6 | 40.3 | 182.9 | |
| September | 4 | 34.7 | 139.9 | |
| October | 11.2 | 39.7 | 132.8 | |
| November | 18.2 | 46.1 | 95.9 | |
| December | 20.2 | 37.1 | 76.6 |
All values in cubic feet per second (cfs).