USGS Streamgage 10020100
Bear River above Reservoir, near Woodruff, UT
Bear River above Reservoir, near Woodruff, UT is USGS streamgage 10020100 in Wyoming, monitoring river discharge in hydrologic subbasin 16010101. It drains a watershed of about 755 square miles. Discharge records at this site go back to 1961. Typical flow runs near 52.9 cfs in July and 245.3 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Wyoming
- Drainage area
- 755 sq mi
- Gauge elevation
- 6,465 ft
- Subbasin (HUC-8)
- 16010101
- Coordinates
- 41.43439, -111.01769
- USGS site number
- 10020100
- Records begin
- 1961-10-01 (65 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 65 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 | 17.8 | 54.5 | 101.9 | |
| February | 23.6 | 59.4 | 114.5 | |
| March | 38.6 | 106.7 | 295.9 | |
| April | 81.5 | 245.3 | 614.3 | |
| May | 214.1 | 638.4 | 1,458.2 | |
| June | 101.5 | 580.5 | 1,679 | |
| July | 7.7 | 52.9 | 529.5 | |
| August | 2.4 | 22.3 | 128.5 | |
| September | 2.8 | 25.5 | 105.8 | |
| October | 3.8 | 30.9 | 153.7 | |
| November | 6.6 | 39.4 | 139.6 | |
| December | 14.8 | 51.7 | 115.4 |
All values in cubic feet per second (cfs).
Common questions
- When does Bear River above Reservoir, near Woodruff, UT normally run highest?
- May, on the long-term record. The median daily flow that month is about 638.4 cfs, against 22.3 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 Bear River above Reservoir, near Woodruff, UT?
- It depends on the month. In January, half of days historically fall near 54.5 cfs, with the middle 80% of days between 17.8 and 101.9 cfs. The month-by-month table on this page gives the full range.
- How long has Bear River above Reservoir, near Woodruff, UT been measured?
- Discharge records at USGS site 10020100 begin in 1961, about 65 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 above Reservoir, near Woodruff, UT?
- The gauge sits at 41.43439, -111.01769, in Wyoming, in hydrologic subbasin 16010101, at an elevation of about 6,465 feet, draining roughly 755 square miles.
- Can I use Bear River above Reservoir, near Woodruff, 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.