WSP12486

• File Number: 8221.109
• Description: Colorado River Basin Projects - Long Hollow
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 5/1/2004
• Author: Wright Water Engineers
• Title: Long Hollow Dam and Reservoir - Phase I Summary Report - Preliminary Drafts - ‎(no final)‎ 05-01-04 through 06-01-04
• Water Supply Pro - Doc Type: Report/Study

ODIG98

TABLE OF CONTENTS

Paae

1.0 INTRODUCTION..........................................,..........,...............,.........,............... .............. 1

1.1 Study Objective and Scope................................................................................... .............. 1

1 .2 Project Location.................................................................................................... ...............2

1.3 Project Purpose ................................................................................................................... 2

1.4 Project Need........................................................................................................................2

1 .5 Water Rights........................................................................................................................ 4

2.0 REVIEW OF EXISTING DATA ..... ................. .......................... ................ ................. .......4

3.0 TOPOG RAPHY ........................................................................................... .................... 5

4.0 GEOLOGIC RECONNAISSANCE ................................ .............,................. ................. ~

5.0 G ROUNDW A TER HYDROLOGY. ................. .........................,........ ........ ........................ 6

6.0 INSTITUTIONAL ISSU ES ..............................,.......... ................".............",.................. P

6.1 National Environmental Policy Act (NEPA)........................................................................~
6.2 Threatened and Endangered Species (T&E) ......................................................................8
6.2.1 Federally Listed Species Considered and Evaluated ..........................................8

6.2.2 Sensitive Species............................................................................................... ~8
6.2.3 Summary of Conclusions of T&E Species Evaluation .........................................9
6.2.4 San Juan River Basin Recovery Implementation Plan (RIP) ...............................9

6.3 Wetlands ......................................................................................................................... 109

6.3.1 Direct Impacts .................................................................................................. 1 09
6.3.2 Preliminary Mitigation Plan......................................... .................................. ..11 W

6.4 Cultural Resources............................................................................................................ 11

6.5 Indian Trust Assets........................................................................................................ 12#
6.5 Findings of Institutional Investigations .................................................. ......................... 1~

7 .0 WATER QUALITY..... ............... .................................. ........................ ....................... 13n

8.0 INSTITUTIONAL CONSTRAINTS .............. .........................,.................. ................... 14-1-3

8.1 Water Allocation and Reservoir Operations .................................................................. 1~

8.2 Payment Issues............................................................................................................. 1644-
8.3 Local Consultations....................................................................................................... 16.t.a

8.4 Rights-of-Way................................................................................................................ 17.fa

8.5 Permitting...................................................................................................................... 174-6
8.6 Reconnaissance Level Opinion of Cost and Financing .................................................18-ffl

9.0 SUMMARY OF FEASIBILITY STUDY FINDINGS..................................................... 1 M+