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USGS 12500450 YAKIMA RIVER ABOVE AHTANUM CREEK AT UNION GAP, WA

PROVISIONAL DATA SUBJECT TO REVISION

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Additional Data and Information.-- Latest shifted rating.

Flood Stage.--The National Weather Service has not established a Flood Stage for this station.

Funding for this site is provided by the cooperators / programs below:

Station Notes
ice
This station is affected by ice during extreme cold weather periods. A description of the types of ice affecting rivers can be download here.
This station managed by the Mid-Columbia Field Office (Kennewick).

Available Parameters Available Period
  
2022-03-01  2023-10-31
1987-10-01  2025-10-21
2007-10-01  2025-10-28
2022-03-01  2023-10-31
2022-03-01  2023-10-31
2022-03-25  2023-10-31
2022-03-01  2025-10-28







 (7)
 
  -- or --

 

 
Summary of all available data for this site
Instantaneous-data availability statement

Temperature, water, degrees Celsius
 
-- Data temporarily unavailable for the time period specified --

Discharge, cubic feet per second
Most recent instantaneous value: Rat 10-21-2025   19:45 PDT
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Oct 28 based on 59 water years of record more
Most Recent
Instantaneous
Value Oct 28		 Min
(1988)		 25th
percen-
tile		 Median Mean 75th
percen-
tile		 Max
(2017)
-- unavailable -- 758 1220 1570 1620 1950 3400

Gage height, feet
Most recent instantaneous value: 40.05 10-28-2025   18:30 PDT
Graph of Gage height, feet

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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius
 
-- Data temporarily unavailable for the time period specified --

Dissolved oxygen, water, unfiltered, milligrams per liter
 
-- Data temporarily unavailable for the time period specified --

Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)
 
-- Data temporarily unavailable for the time period specified --

Nitrate plus nitrite, water, in situ, milligrams per liter as nitrogen
 
-- Data temporarily unavailable for the time period specified --