7256

• UCREFRP Catalog Number: 7256
• Author: Radant, R. D., et al.
• Title: Colorado Squawfish Investigations - White River, Utah.
• USFW Year: 1983.
• USFW - Doc Type: Salt Lake City, Utah.
• Copyright Material: NO

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INTRODUCTION

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This final report complies with provisions of a Memorandum of

Understanding between the State of Utah (acting through the Utah Board of

Water Resources), the U. S. Fish and Wildlife Service (FWS), and the

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U. S. Bureau of Land Management (ELM) to perform studies on the Colorado

s~uawfish (Ptychocheilus lucius) in the White River during 1982.

Four separate but interrelated objectives were established for the

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study. These objectives were to: (1) implant radio transmitters in

adult Colorado s~uawfish and follow their movements until 30 November;

(2) systematically sample all river habitats with electrofishing e~uip-

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ment, trammel nets and seines above and below the proposed dam site,

focusing on capturing all sizes of Colorado s~uawfish; (3) intensively

sample for larval and young-of-the-year (YOY) Colorado s~uawfish with

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seines and small hand nets; and (4) conduct detailed physical measure-

ments (PHABSIM) of a suspected spawning site using standard IFG4

techni~ues.

This report presents and discusses data collected for each of the

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above objectives between 10 May and 30 November 1982. Information
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presented will be used to help fulfill conservation measures for the

Colorado s~uawfish as cited in the White River Dam Project 1982

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Biological Opinion.

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