C150307 Final Supplimental Impact Statement

• Contract/PO #: C150307
• Contractor Name: Animas La Plata
• Contract Type: Loan
• Loan Projects - Doc Type: Report

List of Tables
Page No.
1-1 Provisions of the Colorado Ute Indian Water Rights Settlement Act 1-6
1-2 Administration Proposal Water Allocations for the Structural Components of the
ALP Project 1-8
1-3 List of ALP Project Alternatives 1-11
' 2-1 Summary of Future Uses of M&I Water by the Navajo Nation,ALPWCD,and SJWC . . . 1-2
2-1 Summary of Future Uses of M&I Water by the Navajo Nation,ALPWCD,and SJWC . . . 2-2
2-2 Summary of Future Uses of ALP Project Water by Colorado Ute Tribes and Other
II
Project Beneficiaries 2-9
iii_; 2-3 Potential Water Sources to Meet Use Requirements 2-14
:"; 2-4 Summary of Structural Alternatives to Ridges Basin Dam and Reservoir 2-17
Il D'
I' - 2-20
, 2-5 Summary of Alternatives
I'f 2-6 Alternative 1 Structural Component Allocation of ALP Project Water for
'L t
,II'
I ,'i, M&I Purposes 2-26
II e
2-7 Basin-Wide Firm(Dry Year)Depletion Factors 2_28
III
2-8 Lands Potentially Available for Purchase 2-29
III 2-9 Summary of Estimated Irrigated Acreage to be Acquired for Water Rights Acquisition
,i , Program to Satisfy 13,000 afy Depletion Non-Structural Component 2-30
II.', 2-10 Alternative 1 Impacts to Environmental Resource Areas 2-33
2-11 Alternative 1 Evaluation of Capability of Alternative to Meet the Purpose and Need 2-34
II' 2-12 Alternative 1 Summary of Results of the Technical and Economic Factors 2-34
2-13 Alternative 2 Impacts to Environmental Resource Areas
2-35
i 2-14 Alternative 2 Evaluation of Capability of Alternative to Meet the Purpose and Need 2-36
2-15 Alternative 2 Summary of Results of the Technical and Economic Factors 2-36
', 2-16 Alternative 3 Impacts to Environmental Resource Areas 2-37
2-17 Alternative 3 Evaluation of Capability of Alternative to Meet the Purpose and Need 2-38
i ';` 2-18 Alternative 3 Summary of Results of the Technical and Economic Factors 2-38
, r
2-I9 Alternative 4 Impacts to Environmental Resource Areas 2-39
2-20 Alternative 4 Evaluation of Capability of Alternative to Meet the Purpose and Need 2-40
2-21 Alternative 4 Summary of Results of the Technical and Economic Factors 2-40
•
2-22 Alternative 5 Allocation of ALP Project Water 2-41
2-23 Alternative 5 Impacts to Environmental Resource Areas 2-42
2-24 Alternative 5 Evaluation of Capability of Alternative to Meet the Purpose and Need 2-43
2-25 Alternative 5 Summary of Results of the Technical and Economic Factors 2-43
1 2-26 Allowable Depletions Specified Under the 1986 Settlement Agreement 2-44
2-27 Water Use Scenario 2 Projected M&I Depletions by River Basins 2-47
2-28 Alternative 6-Non Structural Summary of Appraisal-Level Estimate of Irrigated
Acreage to be Required and Required Storage for Water Rights Acquisition Program 2-48
2-29 Estimate of Firm or Assured Water Supply for M&I Uses 2-54
,# 2-30 Appraisal-Level Cost Estimate Irrigation Systems Improvement 2-57
2-31 Alternative 6 Impacts to Significant Environmental Resource Areas 2-60
2-32 Alternative 6 Evaluation of Capability of Alternative to Meet the Purpose and Need 2-62
2-33 Alternative 6 Results of the Evaluation of the Technical and Economic Factors 2-63
2-34 Alternative 7 Impacts to Environmental Resource Areas 2-64
' 2-35 Alternative 7 Evaluation of Capability of Alternative to Meet the Purpose and Need 2-65
2-36 Alternative 7 Summary of Results of the Technical and Economic Factors 2-65
g' 2-37 Alternative 8 Impacts to Environmental Resource Areas 2-66
2-38 Alternative 8 Evaluation of Capability of Alternative to Meet the Purpose and Need 2-67
. 2-39 Alternative 8 Summary of Results of the Technical and Economic Facto 2-68
2-40 Summary of Revenue Stream from Opportunity Costs 2-71
i
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