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Quality Assurance Project Plan: Monitoring of Tributaries to the Yakima River Boundary Waters of the Yakama Nation

Publication number Date Published
22-03-112August 2022
VIEW NOW Quality Assurance Project Plan: Monitoring of Tributaries to the Yakima River Boundary Waters of the Yakama Nation (Number of pages: 42) (Publication Size: 1144KB)

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Author(s) Carroll, J. and C. Perra
Description Previous monitoring within the Yakima River boundary waters of the Yakama Nation Reservation (Union Gap to Mabton) has shown that the Yakima River can have high water temperature and low dissolved oxygen (DO) levels. These levels do not protect fish and other aquatic life that depend on cool, oxygenated water. Previous monitoring of tributaries on this reach of the Yakima River has also shown dangerous high water temperatures and low DO levels.

This project involves water quality monitoring of tributaries and discharges to the Yakima River. It outlines a Yakama Nation monitoring program to measure temperature, DO, and other parameters associated with algal growth in the water (primary productivity). This project will collect water quality data in support of USGS continuous water quality monitoring being conducted at several Yakima River locations during 2022.

The USBR, along with the Yakima Basin Integrated Plan and the Benton Conservation District, is sponsoring the USGS water quality monitoring gages in order to provide calibration data to develop a water quality model that simulates water temperature and DO, along with other parameters. The calibrated model will be used to assess different water management strategies to improve fish migration in the Yakima River corridor.

By conducting data collection in the tributaries to the Yakima River, the Yakama Nation monitoring will help provide a more complete data set that can be used to calibrate a water quality model for temperature and DO; both of these parameters are important to aquatic life throughout the Yakima River basin. The Washington State Department of Ecology will assist the Yakama Nation in collecting and processing water quality samples.

If possible, sampling will occur from June through November 2022, capturing critical periods during the early irrigation season, as well as some post-irrigation periods. Sampling will take place every two weeks at about 20 l
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Keywords QAPP, aquatic life, water temperature, Yakima River, fish, quality assurance project plan, dissolved oxygen, USGS, Yakama Nation Boundary Waters, USBR
WATERSHED Water Resource Inventory Area 37 Lower Yakima
DATA Environmental Information Management (EIM) #JICA0007


Quality Assurance Project Plan: Lower Yakima River Monitoring to Support Continuous Water Quality Gaging