USGS Streamgage 10016900
Bear River at Evanston, WY
Bear River at Evanston, WY is USGS streamgage 10016900 in Wyoming, monitoring river discharge in hydrologic subbasin 16010101. It sits on the Bear River, alongside 16 other gauges Rivermatics tracks on the same river. It drains a watershed of about 441 square miles. Discharge records at this site go back to 1984. Typical flow runs near 91.5 cfs in July and 252.2 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.
View live conditions & forecast →
Gauge details
- State
- Wyoming
- Drainage area
- 441 sq mi
- Gauge elevation
- 6,730 ft
- Subbasin (HUC-8)
- 16010101
- Coordinates
- 41.26986, -110.96369
- USGS site number
- 10016900
- Records begin
- 1984-05-14 (42 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Bear River at Evanston, WY. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 34.7 | 38.6 | 44.5 | ||
| 34 | 40.2 | 50.8 | ||
| 34.3 | 41.9 | 55.6 | ||
| 35.7 | 44.7 | 60.8 | ||
| 33.6 | 42.6 | 57.9 | ||
| 32 | 40.6 | 54.3 | ||
| 30.6 | 38.9 | 51.3 | ||
| 29.6 | 37.9 | 50 | ||
| 27.6 | 35.7 | 46.9 | ||
| 26.2 | 34.3 | 44.7 | ||
| 25.5 | 33.9 | 45.5 | ||
| 26.2 | 35.7 | 50.2 | ||
| 26.2 | 36.8 | 52.1 | ||
| 24.6 | 35.1 | 49.5 |
All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 42 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 | 20 | 37.2 | 65.6 | |
| February | 23.3 | 42.1 | 70.2 | |
| March | 41.2 | 87.8 | 270.6 | |
| April | 117.2 | 252.2 | 519.1 | |
| May | 302.8 | 688.4 | 1,402.4 | |
| June | 151.6 | 573.7 | 1,576 | |
| July | 38.1 | 91.5 | 412.7 | |
| August | 19.1 | 55.5 | 131.4 | |
| September | 15.1 | 45.6 | 113.4 | |
| October | 18.6 | 46.3 | 124.7 | |
| November | 16.5 | 42.1 | 95.7 | |
| December | 17.2 | 36.1 | 70.1 |
All values in cubic feet per second (cfs).
Common questions
- When does Bear River at Evanston, WY normally run highest?
- May, on the long-term record. The median daily flow that month is about 688.4 cfs, against 36.1 cfs in December, 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 at Evanston, WY?
- It depends on the month. In January, half of days historically fall near 37.2 cfs, with the middle 80% of days between 20 and 65.6 cfs. The month-by-month table on this page gives the full range.
- How long has Bear River at Evanston, WY been measured?
- Discharge records at USGS site 10016900 begin in 1984, about 42 years, covering roughly 8,975 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Bear River at Evanston, WY?
- Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
- Where is Bear River at Evanston, WY?
- The gauge sits at 41.26986, -110.96369, in Wyoming, in hydrologic subbasin 16010101, at an elevation of about 6,730 feet, draining roughly 441 square miles.
- Can I use Bear River at Evanston, WY 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.
Upstream and downstream on the Bear River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Bear River in full.
- Bear River near Utah-Wyoming State Line 172 sq mi
- Bear River at Evanston, WY this page
- Bear River above Reservoir, near Woodruff, UT 755 sq mi
- Bear River below Reservoir, near Woodruff, UT 784 sq mi
- Bear River below Pixley Dam, near Cokeville, WY 2,032 sq mi
- Bear River below Smiths Fork, near Cokeville, WY 2,447 sq mi
- Bear River at Border, WY 2,480 sq mi
- Bear River at Pescadero, ID 3,705 sq mi
- Bear River at Soda Springs, ID 3,970 sq mi
- Bear River at Alexander, ID 4,093 sq mi
- Bear River below Grace Dam, near Grace, ID 4,110 sq mi
- Bear River below Upl Tailrace at Oneida, ID 4,456 sq mi
- Bear River at Idaho-Utah State Line 4,884 sq mi
- Bear River near Smithfield, UT 5,193 sq mi
- Bear River near Collinston, UT 6,271 sq mi
- Bear River near Corinne, UT 7,029 sq mi
- Bear River below O-Line Canal near Brigham City, UT