9658

• UCREFRP Catalog Number: 9658
• Author: Schmidt, J. C. and K. L. Orchard.
• Title: Report A - Geomorphic Analysis In Support of a Channel-Maintenance Flow Recommendation for the White River Near Watson, Utah Draft Report.
• USFW Year: 2002.
• USFW - Doc Type: Logan, UT.
• Copyright Material: NO

TABLE OF CONTENTS

LIST OF TABLES ..................................... ........ ................................................................ v

LIST OF FIGURES........... ................................. .............................................................. vi

LIST OF KEY WORDS ................................................................................................. vii

EXECUTIVE SUMMA1l Y ............................................................................................ viii

INTRODUCTION. ........................................... ................................................................... 1

Background - The Objectives of Habitat and Channel Maintenance ..................... 1

Background - Channel and Habitat Maintenance in Relation to the Geomorphic

Concepts of Effective and Bankfull Discharge ...................................................... 2
Background - Geomorphic Research about the White River and Its Relationship

To the Requirements of Endangered Fish .............................................................. 3

Overview of the White River and Description of the Study Site. ..........................6

METHODS ...................... .................. ................................ ................................................ 9

Flood Frequency Analysis....................................... ............................................... 9

Topographic Mapping ............ ............................... ..'............................................. 10

Identifying Bankfull Discharge and the Active Floodplain ................................. 11

Cross Sections ...................................................................................................... 12

Calculating Effective Discharge From Sediment Records ................................... 13

Analysis of Discharge Records to Determine Threshold Discharges .................. 14

Determination of Dso Particle Sizes ..................................................................... 16
Calculation of Average Boundary and Critical Shear Stresses ............................ 16

RESULTS ........................................................................................................................ 18

III