Rivermatics

USGS Streamgage 10296500

W Walker River near Coleville, CA

W Walker River near Coleville, CA is USGS streamgage 10296500 in California, monitoring river discharge in hydrologic subbasin 16050302. It sits on the W Walker River, alongside 3 other gauges Rivermatics tracks on the same river. It drains a watershed of about 250 square miles. Discharge records at this site go back to 1902. Typical flow runs near 332.1 cfs in July and 285.5 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
California
Drainage area
250 sq mi
Gauge elevation
5,520 ft
Subbasin (HUC-8)
16050302
Coordinates
38.51324, -119.44989
USGS site number
10296500
Records begin
1902-10-01 (124 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for W Walker River near Coleville, CA. 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
34.1 36.2 38
33 35.6 37.8
32.4 35.2 37.8
31.9 34.9 37.7
31.6 34.8 38.1
31.3 34.6 37.9
30.7 34.2 37.6
30.2 33.8 37.4
29.8 33.6 37.3
29.5 33.5 37.5
29.2 33.3 37.6
29 33.5 38.3
28.8 33.3 38.1
28.3 33 38.1

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 124 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 32.4 57.8 120.1
February 39.8 69.6 127.9
March 57.2 108.5 225.6
April 142.2 285.5 544.2
May 334.3 708 1,408
June 265.2 873.3 1,866
July 85.1 332.1 1,156.3
August 40 110.1 355.1
September 27.2 64.1 153.3
October 28 57 114.6
November 31.6 60.2 117.4
December 30.9 56.5 109.9

All values in cubic feet per second (cfs).

Common questions

When does W Walker River near Coleville, CA normally run highest?
June, on the long-term record. The median daily flow that month is about 873.3 cfs, against 56.5 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 W Walker River near Coleville, CA?
It depends on the month. In January, half of days historically fall near 57.8 cfs, with the middle 80% of days between 32.4 and 120.1 cfs. The month-by-month table on this page gives the full range.
How long has W Walker River near Coleville, CA been measured?
Discharge records at USGS site 10296500 begin in 1902, about 124 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 W Walker River near Coleville, CA?
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 W Walker River near Coleville, CA?
The gauge sits at 38.51324, -119.44989, in California, in hydrologic subbasin 16050302, at an elevation of about 5,520 feet, draining roughly 250 square miles.
Can I use W Walker River near Coleville, CA 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 W Walker River

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

Other gauges in this subbasin