Rivermatics

USGS Streamgage 13206000

Boise River at Glenwood Bridge near Boise, ID

Boise River at Glenwood Bridge near Boise, ID is USGS streamgage 13206000 in Idaho, monitoring river discharge in hydrologic subbasin 17050114. It sits on the Boise River, alongside 4 other gauges Rivermatics tracks on the same river. It drains a watershed of about 2,773 square miles. Discharge records at this site go back to 1938. Typical flow runs near 1,052.5 cfs in July and 991.5 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
2,773 sq mi
Subbasin (HUC-8)
17050114
Coordinates
43.66056, -116.27917
USGS site number
13206000
Records begin
1938-03-23 (88 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Boise River at Glenwood Bridge near Boise, 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
582 612 629
561 609 633
539 607 640
502 603 644
486 599 649
469 594 654
447 588 658
432 583 663
429 581 668
424 576 671
409 570 672
386 560 672
384 558 674
380 552 673

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 44 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 161.7 265.5 1,135.7
February 163.2 272 3,077.6
March 170.1 285.9 6,368.1
April 457.9 991.5 6,648.7
May 697.2 1,406.9 6,735.8
June 720.2 1,292 5,111.3
July 742.7 1,052.5 1,988.4
August 626.6 793.7 1,259.7
September 376.3 596.4 836.8
October 199.6 337.4 508.6
November 170 257.2 300
December 169.8 261.1 977.4

All values in cubic feet per second (cfs).

Common questions

When does Boise River at Glenwood Bridge near Boise, ID normally run highest?
May, on the long-term record. The median daily flow that month is about 1,406.9 cfs, against 257.2 cfs in November, 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 at Glenwood Bridge near Boise, ID?
It depends on the month. In January, half of days historically fall near 265.5 cfs, with the middle 80% of days between 161.7 and 1,135.7 cfs. The month-by-month table on this page gives the full range.
How long has Boise River at Glenwood Bridge near Boise, ID been measured?
Discharge records at USGS site 13206000 begin in 1938, about 88 years, covering roughly 9,200 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 at Glenwood Bridge near Boise, 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 at Glenwood Bridge near Boise, ID?
The gauge sits at 43.66056, -116.27917, in Idaho, in hydrologic subbasin 17050114, draining roughly 2,773 square miles.
Can I use Boise River at Glenwood Bridge near Boise, 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.

Upstream and downstream on the Boise River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Boise River in full.

Other gauges in this subbasin