9420

• UCREFRP Catalog Number: 9420
• Author: Maddux, H. R., J. A. Mizzi, S. J. Werdon and L. A. Fitzpatrick.
• Title: Overview of the Proposed Critical Habitat for the Endangered and Threatened fishes of the Virgin River Basin.
• USFW Year: 1995.
• USFW - Doc Type: Salt Lake City.
• Copyright Material: NO

TABLE OF CONTENTS
TABLE OF CONTENTS ....................................... ii
LIST OF TABLES ...........................................iv
LIST OF FIGURES ........................................... v
PREFACE ................................................ 1
PARTI-GENERAL OVERVIEW ................................. 2
Background ........................................... 2
Woundfm ........................................ 2
Virgin River Chub ................................... 3
Virgin Spinedace ......... . ......................... . 3
Previous Federal Actions ................................... 4
PART II -PROPOSED CRITICAL HABITAT DESIGNATION ............... 6
Determination of Critical Habitat .............................. 6
General ......................................... 6
Water .......................................... 6
Physical Habitat .................................... 6
.Biological Environment ................................ 6
Primary Constituent Elements: Species specific definitions .......... 7
Woundfin .................................... 7
Virgin River Chub .............................. 7
Virgin Spinedace ............................... 7
Areas Proposed for Designation .............. ............... 7
Woundfm ........................................ S
Virgin River Chub ................................... 9
Virgin Spinedace .................................... 12
Virgin River Floodplain ............................... 15
PART III -BIOLOGICAL OVERVIEW .............................. 17
Background ........................................... 17
Habitats and Status of Listed Fishes ............................ 17
General ......................................... 17
Woundfm ........................................ 17
Life History .................................. 18
Virgin River chub ................................... 20
Life History .................................. 21
Virgin Spinedace .................................... 22
Life History .................................. 22
ii