Freeze Watch
2026-10-24T10:00:00-07:00

* WHAT...Sub-freezing temperatures of 25 to 30 possible. * WHERE...Lower Columbia Basin of Oregon and Washington, Foothills of the Northern Blue Mountains of Oregon, Yakima Valley, and Foothills of the Blue Mountains of Washington. * WHEN...From Friday evening through Saturday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Realtime Data

Washington

Yakima River

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Freeze Watch
Until 2026-10-22T23:15:00-07:00 • National Weather Service
* WHAT...Sub-freezing temperatures of 25 to 30 possible. * WHERE...Lower Columbia Basin of Oregon and Washington, Foothills of the Northern Blue Mountains of Oregon, Yakima Valley, and Foothills of the Blue Mountains of Washington. * WHEN...From Friday evening through Saturday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

YAKIMA RIVER ABOVE AHTANUM CREEK AT UNION GAP, WA

Realtime Data • Report • Conditions

1,280

Discharge (cfs)

40.2

Gauge Height (ft)

USGS 12500450

Streamflow discharge was last observed at 1,280 cfs, and a gauge height of 40.17 feet. With the % decrease since yesterday, the streamflow average over the past 10 days is 1,413 .

Weather today, Tomorrow,

The river is regulated by several dams, including the Cle Elum Dam and the Bumping Lake Dam. Seasonally, the river experiences high flows in the spring and early summer due to snowmelt, while low flows occur in the late summer and fall. Tributaries that contribute to the river include the Naches River and the Tieton River. Interesting facts about the hydrology of this area include that the river is a popular destination for fly fishing and supports a diverse range of fish species, including rainbow trout, bull trout, and Chinook salmon.

October 22, 2026

Elevation	938.0 ft
Last Updated
Gage height, ft	40.17 ft
Nitrate plus nitrite, water, in situ, mg/L as N	-13.11 mg/l as N
Streamflow, ft³/s	1280.0 ft3/s
Specific conductance, water, unfiltered, microsiemens per centimeter at 25°C	159.0 uS/cm @25C
Dissolved oxygen, water, unfiltered, mg/L	15.0 mg/l
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 ±2.5°, formazin nephelometric units (FNU)	44.3 FNU
Temperature, water, degC	5.0 deg C
Percent of Normal	71%
Year Over Year Average	1,825 cfs
24hr Flow Prediction	cfs
Maximum Recorded	30,300 cfs

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Yakima River Above Ahtanum Creek At Union Gap, Wa Realtime Data

YAKIMA RIVER ABOVE AHTANUM CREEK AT UNION GAP, WA

Realtime Data • Report • Conditions

1,280

Discharge (cfs)

40.2

Gauge Height (ft)

October 22, 2026

Seasonal Comparison

Oceanic Nino Index

SNOFLO®

Yakima River Above Ahtanum Creek At Union Gap, Wa Realtime Data

YAKIMA RIVER ABOVE AHTANUM CREEK AT UNION GAP, WA

Realtime Data • Report • Conditions

1,280

Discharge (cfs)

40.2

Gauge Height (ft)

October 22, 2026

Seasonal Comparison

Oceanic Nino Index

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