Fall River Wild Trout Program

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Fall River Wild Trout Program

Home | Key Initiatives | Protect the Best | Fall River Wild Trout Program

Project Goal:

Protect CA’s largest spring-fed river, over 30 miles of wild and native trout habitat, and one million acre-feet per year of cold, clean volcanic source water that provides habitat for native fish and wildlife, water for hydropower and agriculture, and reserve storage and recharge for Shasta Reservoir.


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Project Stages

Implementation

Estimated Completion Date:
Ongoing

Project Funders

Fall River Conservancy

Fish Affected:

Project Description

Since 2013, team members from CalTrout, UC Davis Center for Watershed Sciences, and Fall River Conservancy have collected and tagged thousands of Rainbow Trout with Passive Integrated Transponder tags. These tags allow researchers to identify fish at fixed antenna that are established at strategic locations throughout the drainage as well as when they are captured. This study provides a window into the behavior of individual fish and a scientific foundation for prioritizing actions to develop science based conservation measures for the fishes of the Fall River. Tagging occurs twice a year—once in November and again in April.

A parallel genetic study of Rainbow Trout revealed different sub-populations co-existing in the Fall River. These sub-populations co-exist in the mainstem for most of their lives and then segregate into different areas to spawn with little evidence for gene flow between the two sub-populations. This program illustrates how CalTrout leverages partnerships, technology, and innovative science to improve fisheries management.

Project Partners:

Fall River Conservancy
US Fish & Wildlife Service
CA Department of Fish & Wildlife
UC Davis Center for Watershed Sciences
NFWF

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