Coho Life Cycle Monitoring in Palouse and Larson Creeks

Identification Information

Citation

Originator: Coos Watershed Association

Publish Date: March 17, 2010

Online Link: www.cooswatershed.org

BPA Project #:

Contact Information

Agency: Watershed Councils

Name: Jon Souder

Job Position: Executive Director

Telephone: 541.888.5922

E-Mail Address: jsouder@cooswatershed.org

Description

Abstract: The Coho Life Cycle Monitoring project in Palouse and Larson Creeks is a continuation of a long-term monitoring study initiated in 2004 to examne coho salmon survival, production and habitat use in tide gated coastal lowland streams. Tide gates are tidal flood control structures designed to open and close with each tidal cycle to limit tidal influence on upstream agricultural areas. The basic function of tide gates creates a partial barrier to fish passage. Coastal lowland streams are critical for the sustainability of Oregon Coastal coho, but it is unclear how tide gates may affect coho movement, habitat use and survival. Displaced fishers were employed by the Coos Watershed Association with funding from OWEB Grant 208-2098 during fall 2008 through fall 2009 to assist with implementation of the Life Cycle Monitoring project and related sampling efforts in the lowland coastal subbasins.

Purpose: The objective of the Life Cycle Monitoring project is to estimate the size of juvenile and adult coho salmon populations in the Palouse and Larson subbasins and to assess marine and freshwater survival rates. The Life Cycle Monitoring project in each stream basin consists of adult coho spawner monitoring in the late fall and winter, and juvenile coho smolt and fry sampling in the later winter and string.

Time Period of Content: Fall, 2008 through fall, 2009

Geographic Extent: Larson, Palouse and Willanch sub-basins in the Coos watershed.

Status: Final

Use Constraints: None

Format: Adobe Acrobat .pdf file

Data Quality Information

Lineage-Source: Final report consistent with OWEB guidelines

Data Information

No data information was supplied.

Entity and Attribute Information

Attributes Description: Final grant report

Is a physical copy maintained for reference at Headquarters? Unknown