Rivermatics

USGS Streamgage 13269000

Snake River at Weiser, ID

Snake River at Weiser, ID is USGS streamgage 13269000 in Idaho, monitoring river discharge in hydrologic subbasin 17050201. It sits on the Snake River, alongside 30 other gauges Rivermatics tracks on the same river. It drains a watershed of about 69,200 square miles. Discharge records at this site go back to 1910. Typical flow runs near 10,180.3 cfs in July and 22,996.7 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, alongside daily high and low water-temperature forecasts.

View live conditions & forecast →

Gauge details

State
Idaho
Drainage area
69,200 sq mi
Subbasin (HUC-8)
17050201
Coordinates
44.24556, -116.98083
USGS site number
13269000
Records begin
1910-03-03 (116 years)
Rivermatics forecast
14-day flow outlook + water temperature

14-day flow forecast

Based on observations through for Snake River at Weiser, 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
8,829 9,135 9,451
8,607 9,111 9,581
8,391 9,053 9,716
8,214 8,991 9,806
8,089 8,965 9,920
8,011 8,969 10,034
7,956 8,980 10,120
7,903 9,007 10,262
7,835 9,020 10,384
7,771 9,030 10,480
7,705 9,026 10,548
7,646 9,016 10,592
7,603 9,023 10,651
7,563 9,027 10,704

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 116 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 10,145.5 13,848.4 22,690.3
February 10,417.2 15,248.3 27,510.3
March 11,396.8 17,696.8 37,180.6
April 10,940 22,996.7 47,436.7
May 11,677.4 23,503.2 48,467.7
June 8,948.3 20,350 45,363.3
July 7,150.6 10,180.3 19,406.5
August 7,087.4 9,579.7 12,287.1
September 8,077.3 11,109.7 14,913.3
October 9,881 12,871 18,145.2
November 10,350 13,513.3 18,856.7
December 10,109 13,693.5 20,574.2

All values in cubic feet per second (cfs).

Common questions

When does Snake River at Weiser, ID normally run highest?
May, on the long-term record. The median daily flow that month is about 23,503.2 cfs, against 9,579.7 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Snake River at Weiser, ID?
It depends on the month. In January, half of days historically fall near 13,848.4 cfs, with the middle 80% of days between 10,145.5 and 22,690.3 cfs. The month-by-month table on this page gives the full range.
How long has Snake River at Weiser, ID been measured?
Discharge records at USGS site 13269000 begin in 1910, about 116 years, covering roughly 9,199 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Snake River at Weiser, 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. A companion model forecasts each day's water-temperature high and low. 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 Snake River at Weiser, ID?
The gauge sits at 44.24556, -116.98083, in Idaho, in hydrologic subbasin 17050201, draining roughly 69,200 square miles.
Can I use Snake River at Weiser, 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 Snake River

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

Other gauges in this region