Rivermatics

USGS Streamgage 12508990

Yakima River at Mabton, WA

Yakima River at Mabton, WA is USGS streamgage 12508990 in Washington, monitoring river discharge in hydrologic subbasin 17030003. It sits on the Yakima River, alongside 3 other gauges Rivermatics tracks on the same river. It drains a watershed of about 5,359 square miles. Discharge records at this site go back to 1970. Typical flow runs near 1,422.6 cfs in July and 4,211 cfs in April, with the higher of the two arriving in April.

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Gauge details

State
Washington
Drainage area
5,359 sq mi
Gauge elevation
648 ft
Subbasin (HUC-8)
17030003
Coordinates
46.23121, -119.99945
USGS site number
12508990
Records begin
1970-10-01 (56 years)

14-day flow forecast

Based on observations through for Yakima River at Mabton, WA. 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
1,550 1,674 1,802
1,507 1,713 2,010
1,540 1,845 2,352
1,586 1,968 2,565
1,557 1,943 2,513
1,514 1,896 2,431
1,457 1,842 2,361
1,415 1,811 2,337
1,379 1,785 2,310
1,334 1,754 2,289
1,315 1,756 2,317
1,286 1,736 2,300
1,253 1,699 2,253
1,241 1,693 2,254

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 56 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 1,602.3 3,037.4 7,443.2
February 1,873.8 3,342.1 8,549.7
March 1,994.8 3,898.4 9,183.5
April 1,442.7 4,211 9,556.7
May 1,551 4,215.2 10,773.5
June 1,102.7 2,930.3 8,504
July 798.2 1,422.6 3,160.6
August 864.7 1,428.4 1,947.4
September 1,054.1 1,639.3 2,134.7
October 1,293.2 1,835.2 2,477.7
November 1,635.3 2,215.3 4,067.3
December 1,594.5 2,455.2 6,306.8

All values in cubic feet per second (cfs).

Common questions

When does Yakima River at Mabton, WA normally run highest?
May, on the long-term record. The median daily flow that month is about 4,215.2 cfs, against 1,422.6 cfs in July, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Yakima River at Mabton, WA?
It depends on the month. In January, half of days historically fall near 3,037.4 cfs, with the middle 80% of days between 1,602.3 and 7,443.2 cfs. The month-by-month table on this page gives the full range.
How long has Yakima River at Mabton, WA been measured?
Discharge records at USGS site 12508990 begin in 1970, about 56 years, covering roughly 8,709 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is Yakima River at Mabton, WA?
The gauge sits at 46.23121, -119.99945, in Washington, in hydrologic subbasin 17030003, at an elevation of about 648 feet, draining roughly 5,359 square miles.
Can I use Yakima River at Mabton, WA 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 Yakima River

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

Other gauges in this subbasin