Rivermatics

USGS Streamgage 13206305

Boise River South Channel at Eagle, ID

Boise River South Channel at Eagle, ID is USGS streamgage 13206305 in Idaho, monitoring river discharge in hydrologic subbasin 17050114. It drains a watershed of about 2,778 square miles. Discharge records at this site go back to 1999. Typical flow runs near 656.9 cfs in July and 523.6 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State
Idaho
Drainage area
2,778 sq mi
Subbasin (HUC-8)
17050114
Coordinates
43.67528, -116.35361
USGS site number
13206305
Records begin
1999-11-01 (27 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Boise River South Channel at Eagle, ID. 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.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
390 404 416
381 403 419
375 403 422
359 401 423
354 401 427
343 398 429
327 395 431
324 394 435
325 394 440
321 391 442
307 386 441
302 384 442
303 384 446
295 380 446

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

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 104.4 207.2 284.5
February 117.8 220.6 457.4
March 114.8 231.6 1,622.5
April 282.9 523.6 2,755
May 439.9 757.2 3,090
June 480 790.6 2,161.7
July 506.4 656.9 988.5
August 438 534.9 766
September 323.5 418.5 501.4
October 181.9 257.8 334.7
November 121.6 204.8 238.2
December 107.1 201.6 241.3

All values in cubic feet per second (cfs).

Common questions

When does Boise River South Channel at Eagle, ID normally run highest?
June, on the long-term record. The median daily flow that month is about 790.6 cfs, against 201.6 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 Boise River South Channel at Eagle, ID?
It depends on the month. In January, half of days historically fall near 207.2 cfs, with the middle 80% of days between 104.4 and 284.5 cfs. The month-by-month table on this page gives the full range.
How long has Boise River South Channel at Eagle, ID been measured?
Discharge records at USGS site 13206305 begin in 1999, about 27 years, covering roughly 9,201 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Boise River South Channel at Eagle, ID?
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 Boise River South Channel at Eagle, ID?
The gauge sits at 43.67528, -116.35361, in Idaho, in hydrologic subbasin 17050114, draining roughly 2,778 square miles.
Can I use Boise River South Channel at Eagle, 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.

Other gauges in this subbasin