Central Valley Chinook Adult Escapement Monitoring Plan

The goal of this project was to develop a comprehensive monitoring plan for Central Valley Chinook salmon escapement, which provides fishery managers the data necessary to assess Chinook population status and trends. This information is necessary as part of an overall strategy to ensure Chinook conservation and is critical to moving forward on numerous management and recovery efforts.

About
Data Access
Status and Source
Additional Resources

Introduction

Monitoring spring-run Chinook Salmon in Deer Creek
Photo by Terri Moore, CDFW

Providing a sound basis for implementing protective measures and assessing recovery of listed stocks;

Assisting in the evaluation of restoration projects, such as those implemented and funded through the Central Valley Project Improvement Act, the Anadromous Fish Restoration Program, and California Bay-Delta Authority;

Fulfilling regulatory needs to assess and quantify population impacts from authorized activities such as water diversions, fisheries, and hatchery programs;

Evaluating the contribution of hatchery fish to Central Valley Chinook populations;

Providing life history information helpful to improve the management of Chinook in the Central Valley.

Existing Program Review

The first phase of the project was to review and critique all existing Chinook escapement monitoring programs in the Central Valley. The program review identified sampling protocols, projected strengths and weaknesses, and provided recommendations for additional monitoring projects.

Existing Program Summary for Central Valley Salmon and Steelhead Monitoring Programs (0.8 MB PDF).

Comprehensive Monitoring Plan

The comprehensive monitoring plan includes a spatially and temporally balanced sampling protocol that when implemented will allow for statistically defensible estimates of population status. The plan incorporates an adaptive management strategy, and recommends a standardized database structure, as well as standardized reporting techniques.

Central Valley Chinook Salmon In-River Escapement Monitoring Plan (2.1MB pdf)

Map Viewer
The Chinook Comprehensive Monitoring effort is one of the data sources incorporated into the Chinook Abundance (Trends) dataset. Therefore data collected as part of the Chinook Comprehensive Monitoring effort are available through the geographic layers listed below.

Note: currency of Chinook Comprehensive Monitoring data available through the Chinook Abundance (Trends) dataset will depend on the date the Chinook Abundance (Trends) dataset was last updated and may not yet include the most recent data.

Layer names:
Chinook Abundance - Point Features
Chinook Abundance - Linear Features

When using the map viewer, you will be prompted to either login with your state username and password, or use the public BIOS viewer. All CalFish layers are public layers and do not require a special log-in or state credentials.

CalFish Tabular Data
Yes - data is available through the CalFish database query.

Data Categories:
Adult Return - Estimates of Spawning Population
Adult Return - Redd Counts
Adult Return - Spawner Counts
Dam/Weir Counts (Adult or Juvenile)

The CalFish database query gives you access to detailed tabular data where query results can be narrowed by including criteria such as county or stream. Abundance data is parsed into major category in the CalFish database query. Note: to recreate the records in the abundance point or line features you will need to combine the results from a combination of abundance data categories (ie. the Chinook Abundance - Linear Features geographic layer includes results from the Adult Return-Redd Counts, Adult Return-Spawner Counts, and Harvest-Freshwater/Estuary data categories).

CalFish Data Downloads
The Chinook Comprehensive Monitoring effort is one of the data sources incorporated into the Chinook Abundance (Trends) dataset.

Note: currency of Chinook Comprehensive Monitoring data available through the Chinook Abundance (Trends) dataset will depend on the date the Abundance and Trends dataset was last updated and may not yet include the most recent data.

Download Name: Chinook Abundance (Trends)

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File Size: 2.5 MB

Publication date: July 2011

The CalFish Abundance Database accommodates the information collected using dissimilar methods to be compiled into a single standardized database. Some examples include: in-stream salmon carcass counts, salmon redd counts, live fish counted passing dams or weirs, and fish observed during summer snorkeling surveys. Chinook Abundance (Trends) is a product of the CalFish sponsored Anadromous Abundance and Trends Program. Please visit the Anadromous Fish Abundance and Trends Page for more information.