USGS Streamgage 10086500
Bear River below Upl Tailrace at Oneida, ID
Bear River below Upl Tailrace at Oneida, ID is USGS streamgage 10086500 in Idaho, monitoring river discharge in hydrologic subbasin 16010202. It drains a watershed of about 4,456 square miles. Discharge records at this site go back to 1922. Typical flow runs near 1,074 cfs in July and 821.5 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Idaho
- Drainage area
- 4,456 sq mi
- Gauge elevation
- 4,800 ft
- Subbasin (HUC-8)
- 16010202
- Coordinates
- 42.26658, -111.75192
- USGS site number
- 10086500
- Records begin
- 1922-05-08 (104 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 10 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 | 305.1 | 370.8 | 1,228.4 | |
| February | 324.2 | 444.4 | 1,470 | |
| March | 354.5 | 532.3 | 2,086.1 | |
| April | 383.6 | 821.5 | 1,916.3 | |
| May | 366.5 | 768.8 | 2,195.8 | |
| June | 429.9 | 786 | 1,285.3 | |
| July | 797.8 | 1,074 | 1,365.2 | |
| August | 621.9 | 1,025.7 | 1,267.1 | |
| September | 391.1 | 684.2 | 1,133.5 | |
| October | 277.4 | 387 | 1,193.8 | |
| November | 284.5 | 383.7 | 1,450.7 | |
| December | 295.7 | 388.4 | 1,224.1 |
All values in cubic feet per second (cfs).
Common questions
- When does Bear River below Upl Tailrace at Oneida, ID normally run highest?
- July, on the long-term record. The median daily flow that month is about 1,074 cfs, against 370.8 cfs in January, 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 below Upl Tailrace at Oneida, ID?
- It depends on the month. In January, half of days historically fall near 370.8 cfs, with the middle 80% of days between 305.1 and 1,228.4 cfs. The month-by-month table on this page gives the full range.
- How long has Bear River below Upl Tailrace at Oneida, ID been measured?
- Discharge records at USGS site 10086500 begin in 1922, about 104 years, covering roughly 3,652 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Bear River below Upl Tailrace at Oneida, ID?
- The gauge sits at 42.26658, -111.75192, in Idaho, in hydrologic subbasin 16010202, at an elevation of about 4,800 feet, draining roughly 4,456 square miles.
- Can I use Bear River below Upl Tailrace at Oneida, ID 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.