USGS Streamgage 10011500
Bear River near Utah-Wyoming State Line
Bear River near Utah-Wyoming State Line is USGS streamgage 10011500 in Utah, monitoring river discharge in hydrologic subbasin 16010101. It drains a watershed of about 172 square miles. Discharge records at this site go back to 1942. Typical flow runs near 206.5 cfs in July and 96.3 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Utah
- Drainage area
- 172 sq mi
- Gauge elevation
- 7,961 ft
- Subbasin (HUC-8)
- 16010101
- Coordinates
- 40.96521, -110.85354
- USGS site number
- 10011500
- Records begin
- 1942-07-01 (84 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 84 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 | 29.8 | 40.3 | 55.1 | |
| February | 29.6 | 39.7 | 50.3 | |
| March | 30.3 | 41.9 | 62.5 | |
| April | 45.8 | 96.3 | 217.3 | |
| May | 243 | 540 | 1,086.8 | |
| June | 290.7 | 727.9 | 1,524.7 | |
| July | 98 | 206.5 | 577.2 | |
| August | 46.3 | 80.7 | 160.8 | |
| September | 33.9 | 63.1 | 133.8 | |
| October | 34.5 | 56 | 106.9 | |
| November | 35.6 | 50.9 | 79.6 | |
| December | 31.1 | 43.2 | 60.8 |
All values in cubic feet per second (cfs).
Common questions
- When does Bear River near Utah-Wyoming State Line normally run highest?
- June, on the long-term record. The median daily flow that month is about 727.9 cfs, against 39.7 cfs in February, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Bear River near Utah-Wyoming State Line?
- It depends on the month. In January, half of days historically fall near 40.3 cfs, with the middle 80% of days between 29.8 and 55.1 cfs. The month-by-month table on this page gives the full range.
- How long has Bear River near Utah-Wyoming State Line been measured?
- Discharge records at USGS site 10011500 begin in 1942, about 84 years, covering roughly 9,126 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Bear River near Utah-Wyoming State Line?
- The gauge sits at 40.96521, -110.85354, in Utah, in hydrologic subbasin 16010101, at an elevation of about 7,961 feet, draining roughly 172 square miles.
- Can I use Bear River near Utah-Wyoming State Line 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.