USGS Streamgage 10155000
Provo River near Hailstone, UT
Provo River near Hailstone, UT is USGS streamgage 10155000 in Utah, monitoring river discharge in hydrologic subbasin 16020203. It drains a watershed of about 230 square miles. Discharge records at this site go back to 1949. Typical flow runs near 157 cfs in July and 283.2 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Utah
- Drainage area
- 230 sq mi
- Gauge elevation
- 6,283 ft
- Subbasin (HUC-8)
- 16020203
- Coordinates
- 40.60511, -111.31453
- USGS site number
- 10155000
- Records begin
- 1949-10-01 (77 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 77 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 | 59.8 | 79.6 | 120.5 | |
| February | 62.5 | 82.4 | 119.2 | |
| March | 73.2 | 107.4 | 185.7 | |
| April | 138.8 | 283.2 | 564.7 | |
| May | 451.9 | 984.9 | 1,922.9 | |
| June | 210.9 | 847.4 | 1,855.3 | |
| July | 32.3 | 157 | 493 | |
| August | 28.9 | 65.6 | 166 | |
| September | 32.8 | 65.7 | 128 | |
| October | 47.2 | 81.6 | 142.5 | |
| November | 62.9 | 89.9 | 139.6 | |
| December | 61.4 | 83.6 | 125 |
All values in cubic feet per second (cfs).
Common questions
- When does Provo River near Hailstone, UT normally run highest?
- May, on the long-term record. The median daily flow that month is about 984.9 cfs, against 65.6 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Provo River near Hailstone, UT?
- It depends on the month. In January, half of days historically fall near 79.6 cfs, with the middle 80% of days between 59.8 and 120.5 cfs. The month-by-month table on this page gives the full range.
- How long has Provo River near Hailstone, UT been measured?
- Discharge records at USGS site 10155000 begin in 1949, about 77 years, covering roughly 9,094 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Provo River near Hailstone, UT?
- The gauge sits at 40.60511, -111.31453, in Utah, in hydrologic subbasin 16020203, at an elevation of about 6,283 feet, draining roughly 230 square miles.
- Can I use Provo River near Hailstone, 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.