WSP05944

• File Number: 8276.300
• Description: Lower Gunnison Basin Unit - Colorado River Basin Salinity Control Project
• State: CO
• Basin: Colorado Mainstem
• Water Division: 4
• Date: 9/1/1981
• Title: Final Report of the Lower Gunnison Salinity Control Study
• Water Supply Pro - Doc Type: Publication

Plan Six - Irrigation Water Management and Onfarm Ditch
Lining - Mixed Level - 115,500 acres
Plan Seven - Irrigation Water Management and Onfarm Ditch
Lining - Mixed Level - 169,000 acres
Plan Eight - Irrigation Water Management and Onfarm Ditch
Lining - Maximum Level - 169,000 acres
Additional Alternatives
Public Participation

VI. Recommended Plan
Plan Description
Level of Federal Funding
Nondiscrimination
Mitigation Strategies

VII. Implementation Authorities
USDA Program Authorities
Recommendations for Implementation

Page

52

55

58

60
60

62
62
65
65
65

67
67
69

VIII. Appendix 73
Appendix No. 1 - Summary of Alternative Plans 73
Displayed in PrinCiples and Standards Format
Appendix No. 2 - Federal Permits 82
Appendix No.3 - Unit Values for Estimating the Effects of 83
Salinity Control Practices

Table I-I
Table 1-2
Figure II-I
Table II-I

Table II-2

Figure III-l
Figure III-2
Table III-l
Table III-2
Table III-3
Table III-4
Table IV-l

Table IV-2

Table IV-3

Table V-I

Table V-2

List of Tables and Figures

Summary of Salt Loading and Potential Reduction
Summary of Candidate Plans
Multi-Objective Planning Team
Sources of Onfarm Salt Loading and Practices for
Attaining Salt Load Reduction
Management and Structural Practices Considered
for Three Levels of Improvement
Gunnison River Drainage
Generalized Geologic Map
Wetlands Classified by Water Source
Wetlands Influenced by Onfarm Irrigation Management
Onfarm Irrigation Influenced Wetlands by Wetland Types
Present Irrigated Cropping System
Summary of Annual Salt Loading from Onfarm Irrigation
Sources
Summary of Annual Salt Loading from Off-farm Distribution
Systems
Water Budget for Onfarm Irrigation by Levels of
Improvement
Formulation of Alternative Plans for Onfarm Program
for Salinity Control
Summary of Candidate Plans

2
3
8
9

11

16
17
21
21
22
25
30

30

33

41

42

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