Bear River at Border, WY

Gauge details

State

Idaho

Drainage area

2,480 sq mi

Gauge elevation

6,057 ft

Subbasin (HUC-8)

16010102

Coordinates

42.21104, -111.0538

USGS site number

10039500

Records begin

1937-10-01 (89 years)

Rivermatics forecast

14-day flow outlook

14-day flow forecast

Based on observations through September 16 for Bear River at Border, 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.

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 89 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

All values in cubic feet per second (cfs).

Common questions

When does Bear River at Border, WY normally run highest?

June, on the long-term record. The median daily flow that month is about 851.1 cfs, against 127 cfs in September, 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 Border, WY?

It depends on the month. In January, half of days historically fall near 148.3 cfs, with the middle 80% of days between 97.8 and 270.2 cfs. The month-by-month table on this page gives the full range.

How long has Bear River at Border, WY been measured?

Discharge records at USGS site 10039500 begin in 1937, about 89 years, covering roughly 9,130 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 Border, 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 Border, WY?

The gauge sits at 42.21104, -111.0538, in Idaho, in hydrologic subbasin 16010102, at an elevation of about 6,057 feet, draining roughly 2,480 square miles.

Can I use Bear River at Border, 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 441 sq mi
• 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 this page
• 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

Other gauges in this subbasin

• Bear River below Pixley Dam, near Cokeville, WY
• Smiths Fork near Border, WY
• Bear River below Smiths Fork, near Cokeville, WY