WSPP287

• File Number: 8240.200.49.J
• Description: Colorado River Threatened-Endangered - RIPRAP - Price-Stubb Fish Passage - Environmental Studies
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 12/1/2004
• Author: DOI-BOR
• Title: Final Environmental Assessment and Finding of No Significant Impact - RE- Providing Endangered Fish Passage at the Price-Stubb Diversion Dam on the Colorado River - 12-01-04
• Water Supply Pro - Doc Type: Report/Study

001053

Table of Contents

CHAPTER I-INTRODUCTION. .................... .................... ..................... ...... ............. .... 1
Need for and Purpose of Action....... ........... ....... ....................... ..................... ..... ........ .... 1

Background Information... ... ......... ..... .......... ....... .......... ......... ........ ..... ... ........... ..... .... ..... 3

Scope.. .... ........ ..... ... .... .... .... .... ... ..... ..... .......... ................. ... ............. ..... ...... ........ ..... ......... 4

Water Resources .... ..... ........... ..... ....... ... ............. ... .......... ... ... ... ............ ...... ... ......... ..... 4

Recreation Resources.................................................................................................. 5

Public Safety............................................................................................................... 5

Land and Facility Resources ... ..... ......... .......... ........ ...... ..... ...... .......... ...... .......... .... ..... 5

Unique Geographic Features........ ....... ....... ........ .................... .............. ...... ..... ........ .... 5

Fish and Wildlife Resources....... .......... ........... ....... ...... ......... ............... ...................... 5

Cultural Resource........... .... .... ............ ................. .... ....... .... ................ ....... .... .............. 6

Social and Economic Resources ..... .................... ...... .... ................ ...... ..... ... ...... .......... 6

CHAPTER 2-AL TERNA TIVES ............. ............. .............. .......... .......... ............. ....... ..... 7

Preferred Alternative..... .... ... ........ ....... ... ... .... .... .......... ... .... .... ... ............. ....... .... ..... ....... 22

No Action... ....................... ...................... .... ........... ...... ........ ........... ............... ..... ............ 7

Conventional Fish Ladder........... ...................... ............................. .... ............. ...... .... ...... 7

Design... ...... ... ...... ....... ........ ... .... ................... ...... .... .... .... ... ... ... ....... ... ........ ..... ... .... ..... 8

Construction.............................................................................................................. 10

Operation, Maintenance and Replacement Measures ............................................... 10
Water Supply for Fish Ladder.......... .............. ....... ...... ........... .......... .......... ............... 11
Downstream Rock Fish Passage.. ....... ......... ..... ..................... .... ............... ......... ....... .... 11

Design.. .... ................... ............. ...... ................... ................. ........ ............... .... .... ........ 11

Construction.............................................................................................................. 12

Operation, Maintenance and Replacement Measures............................................... 15
Water Supply for Fish Passage .................................................................................15
Downstream Rock Fish Passage ................................................................................... 15
With Whitewater Recreation Features .......................................................................... 15

Design....................................................................................................................... 16

Construction ....... ........ ............ ................... ..... ......... ......... .................... ...... ..... ..... ..... 16

Operation, Maintenance and Replacement Measures............................................... 18
Water Supply for Fish Passage.................... ......... ........... ... ............. ...... ........ ........... 19

Dam Removal....... ..... ................ ............ ... ......... ..... ................ ....... ..... ... ........ ..... ... ....... 19

Design ..... .............. ................. ................... ..... ....................... .............. ....... ... ...... ...... 19

Construction.............................................................................................................. 21

Operation and Maintenance .............................. ........................................ ......... ....... 22

Water Supply.. ........................... ........................................................ ........ ......... ...... 22

Environmental Commitments...... ...... ............ ........ .......... ........... ............... ...... .......... ... 23

CHAPTER 3-AFFECTED ENVIRONMENT AND ENVIRONMENTAL

CONSEQUENCES........................ ................................................ ........... ........................ 25

General........ ............................................. ..................... ................. .............. ................. 25

Water Resources................................................................ ......... .................................. 26

Ute Water Conservancy District Pump Plant Intake................................................. 26

Water Rights ................ .......... ............ ................... ..................... ................ ..... ... ........... 27

Clifton Water District-Downstream Water Quality................................................... 29

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