USGS Streamgage 09413500
Virgin River near St. George, UT
Virgin River near St. George, UT is USGS streamgage 09413500 in Utah, monitoring river discharge in hydrologic subbasin 15010010. It drains a watershed of about 4,123 square miles. Discharge records at this site go back to 1950. Typical flow runs near 36.5 cfs in July and 151.8 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Utah
- Drainage area
- 4,123 sq mi
- Gauge elevation
- 2,402 ft
- Subbasin (HUC-8)
- 15010010
- Coordinates
- 37.01442, -113.68052
- USGS site number
- 09413500
- Records begin
- 1950-10-01 (76 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 76 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 | 80.5 | 132.5 | 286.9 | |
| February | 74.2 | 134.4 | 338.6 | |
| March | 59.5 | 144.4 | 619.4 | |
| April | 39 | 151.8 | 1,011.9 | |
| May | 23.4 | 104.8 | 1,144.2 | |
| June | 0.2 | 34 | 381.5 | |
| July | 6.4 | 36.5 | 189.4 | |
| August | 9.5 | 51.6 | 253.6 | |
| September | 4.1 | 57.9 | 216.4 | |
| October | 28.7 | 81 | 197.7 | |
| November | 68.8 | 105.3 | 228.5 | |
| December | 77.6 | 121.6 | 231.6 |
All values in cubic feet per second (cfs).
Common questions
- When does Virgin River near St. George, UT normally run highest?
- April, on the long-term record. The median daily flow that month is about 151.8 cfs, against 34 cfs in June, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Virgin River near St. George, UT?
- It depends on the month. In January, half of days historically fall near 132.5 cfs, with the middle 80% of days between 80.5 and 286.9 cfs. The month-by-month table on this page gives the full range.
- How long has Virgin River near St. George, UT been measured?
- Discharge records at USGS site 09413500 begin in 1950, about 76 years, covering roughly 9,125 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Virgin River near St. George, UT?
- The gauge sits at 37.01442, -113.68052, in Utah, in hydrologic subbasin 15010010, at an elevation of about 2,402 feet, draining roughly 4,123 square miles.
- Can I use Virgin River near St. George, UT data for flood or safety decisions?
- No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.