This project, managed by the Washington Department of Fish and Wildlife (WDFW), seeks to develop and implement a process that augments data from existing monitoring and evaluation (M&E) programs to identify factors limiting desired performance (e.g., productivity, abundance) and inform recovery actions directed at salmon and steelhead populations in the Upper Columbia River basin (UCR).

From 2010 – 2020, project work focused on estimating escapement for steelhead populations in the UCR. In 2020 and beyond, steelhead abundance estimation will be managed by Chelan, Douglas, and Grant County Public Utility Districts (PUDs). As the lead project proponent, WDFW has requested to focus on populations of spring Chinook Salmon within the UCR Evolutionary Significant Unit, listed as endangered under the Endangered Species Act. A significant knowledge gap exists regarding adult spring Chinook Salmon run escapement into major spawning areas (MaSA), and their subsequent survival during the summer holding period. There is also a critical gap in quantifying run escapement into the Wenatchee, Entiat, Methow, and Okanogan sub-basins.

Due to the imperiled status of spring Chinook Salmon in the UCR and the importance of this life stage for recovery (i.e., potential spawners), WDFW will collect spring Chinook Salmon data with the overarching goal of quantifying run escapement at multiple spatial scales in the UCR. Specific objectives include (1) accurately and precisely quantify run escapement and composition at the ESU, population, and MaSA scales, (2) develop estimates of pre-spawn mortality and survival for spring Chinook Salmon at population and MaSA spatial scales, (3) evaluate patterns of movement, distribution, and habitat utilization that may be associated with patterns in survival and mortality, and (4) develop a predictive model for pre-spawn mortality that can be used for conservation and incorporated into habitat restoration design and prioritization.

This contract covers WDFW’s management and oversight of the following field activities:
1.    PIT tagging and scale collection of adult spring Chinook Salmon at Priest Rapids Dam.
2.    Operation and maintenance of PIT tag arrays in the Wenatchee and Methow River basins (Colville Confederated Tribes maintains PIT
       arrays in the Okanogan under CR-363464, Biomark maintains PIT arrays installed under the past ISEMP contract, currently under 2018-
       002-00).
3.    Estimate escapement and prespawn mortality for spring Chinook Salmon.
4.    Operation of a juvenile smolt trap within the Entiat River to estimate spring Chinook and steelhead outmigrant abundance, PIT tag
       captured juveniles in support of ongoing survival studies (Comparative Survival Study), estimate Entiat River spring Chinook productivity
       and smolt-to-adult return rates.

The contract also provides for project management, administration, coordination, data analysis, and status and final reporting. The final report deliverable for 2010-034-00 is provided under this contract.