2013 Scott River Salmon Studies Final Report

Document Details:

Title: 2013 Scott River Salmon Studies Final Report
Category: Technical Report
File: Knechtle-et-al_2014_0036_2013-Scott-River-river-salmon-studies-final-report.pdf
Updated Date: 09.01.2017
Author(s)/Source(s): Morgan Knechtle, Diana Chesney
Publication Date: 2014-Jul-24
Focal Topic: Salmon, Steelhead/Rainbow Trout
Location: Scott River
Watershed Code: 180102

The California Department of Fish and Wildlife's (Department), Klamath River Project (KRP) operated a video fish counting facility and conducted cooperative spawning ground surveys (carcass surveys) on the Scott River during the 2013 fall-run Chinook salmon (Oncorhynchus tshawytscha) and coho salmon ( Oncorhynchus kisutch) spawning season. The purpose of these surveys is to describe the run characteristics of adult Chinook salmon and coho salmon into the Scott River. Video fish counting operations began on September 30, 2013, and ended on February 8, 2014, due to high river flows.

The total number of Chinook salmon that entered the Scott River during the 2013 season is estimated to be 4,624 fish. Based on the proportion of male and female Chinook salmon sampled during the spawning ground surveys, the run was comprised of approximately 2,201 (47.6%) males and 2,423 (52.4%) females. Based on scale age analysis, adults comprised approximately 87.3% (4,036 fish) and grilse comprised 12.7% (588 fish) of the run. Males ranged in fork length (FL) from 39 cm to 103 cm and averaged 70.6 cm. Females ranged in FL from 42 cm to 93 cm and averaged 75.0 cm. KRP staff estimated that none of the Chinook salmon that returned were of hatchery origin.

Keyword Tags:
fall run chinook