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Draft Dolores Project Drought Contingency Plan

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Draft Dolores Project Drought Contingency Plan DOLORES PROJECT DOLORES DROUGHT WATER CONSERVANCY CONTINGENCY DISTRICT PLAN A plan to reduce the impacts of drought for users of the Dolores Project by implementing mitigation and response actions to decreases theses impacts 0 Table of Contents TABLES AND FIGURES .............................................................................................................. 3 APPENDICES ................................................................................................................................ 4 ABBREVIATIONS AND DEFINITIONS ..................................................................................... 5 EXECUTIVE SUMMARY ............................................................................................................ 6 DISTRICT BOARD RESOLUTION TO ADOPT PLAN ............................................................. 9 ACKNOWLEDGEMENTS .......................................................................................................... 10 1 Introduction ........................................................................................................................... 11 1.1 Purpose of the Drought Contingency Plan ..................................................................... 11 1.2 Planning Area ................................................................................................................. 11 1.3 History of Dolores Project.............................................................................................. 18 1.4 Dolores Project Drought Background ............................................................................ 24 2 Stakeholder and Public Involvement .................................................................................... 30 2.1 Planning Task Force ....................................................................................................... 30 2.2 Task Force Involvement ................................................................................................. 30 2.3 Stakeholder Identification .............................................................................................. 30 2.4 Stakeholder Involvement and Comments ...................................................................... 30 2.5 Public Involvement and Comments ............................................................................... 30 3 Drought Monitoring .............................................................................................................. 31 3.1 Methodology for Monitoring, Accounting, and Determining Drought ......................... 31 3.2 Description of Past Dolores Project Droughts ............................................................... 33 3.3 Current Drought Monitoring and Potential Future Improvements................................. 34 4 Vulnerability Assessment ..................................................................................................... 36 4.1 Impact of Past Dolores Project Droughts on Water Users ............................................. 36 4.2 Summary of Past and Future Risk of Economic Losses ................................................ 43 4.3 Summary of Past and Future Risk of Social and Environmental Losses ....................... 43 4.4 Assessment of Climate Change on Future Risk ............................................................. 44 5 Mitigation Actions Prior to a Drought .................................................................................. 46 5.1 Structural Mitigation Actions ......................................................................................... 46 5.2 Non-Structural Mitigation Actions................................................................................. 71 1 6 Response Actions to a Drought............................................................................................. 79 6.1 Active Communication Structure ................................................................................... 79 6.2 Improve Water Supply Projections and Timing ............................................................. 79 6.3 Use of DWCD Water Portfolio for Other Project Uses During a Drought .................... 83 6.4 Narraguinnep Reservoir Re-Operations ......................................................................... 83 6.5 Increase MVIC Early Direct Flow Diversions in Years of Managed Spills .................. 84 7 Operation and Administrative Framework ........................................................................... 85 7.1 Roles ............................................................................................................................... 85 7.2 Responsibilities & Procedures ....................................................................................... 85 8 Plan Update Process .............................................................................................................. 87 8.1 Plan Evaluation Process ................................................................................................. 87 8.2 Measuring the Effectiveness of the Plan ........................................................................ 87 8.3 Timing of Updates to the Plan........................................................................................ 88 9 Summary of Drought Plan Actions and Recommendations ................................................. 89 9.1 Mitigation Actions.......................................................................................................... 89 9.2 Response Actions ........................................................................................................... 92 2 TABLES AND FIGURES Table 1. FRE Drought Water Supply and Income ........................................................................ 37 Table 2. Full Service Irrigation Drought Water Supply and Income* .......................................... 38 Table 3. Full Service Irrigation Crop Census Summary ............................................................... 39 Table 4. Dolores County Drought Crop Yield Per Acre ............................................................... 40 Table 5. Montezuma County Drought Crop Yield Per Acre ........................................................ 40 Table 6. Total MVIC Project and Non-Project Water Supply* .................................................... 41 Table 7. Downstream Fishery Water Supply ................................................................................ 42 Table 8. Installation Cost Estimate ............................................................................................... 47 Table 9. Connection of Irrigated Lands to Rock Ford Cost Estimate ........................................... 49 Table 10. Lower Arickaree Canal Cost Estimate .......................................................................... 54 Table 11. Piping of Existing Goodland Canal Cost Estimate ....................................................... 57 Table 12. Piping of Goodland Canal Tail Waters to THC Cost Estimate .................................... 58 Table 13. Moonlight Canal Cost Estimate .................................................................................... 61 Table 14. Recommended Structural Mitigation Actions .............................................................. 90 Table 15. Recommended Non-Structural Mitigation Actions ...................................................... 91 Table 16. Recommended Response Actions ................................................................................. 92 Figure 1. Location Map................................................................................................................. 14 Figure 2. Yearly Streamflow of the Dolores River at the Town of Dolores (1896-2016) ........... 15 Figure 3. Precipitation at Great Cut ............................................................................................. 16 Figure 4. HI Four Snow Pack on May 1st .................................................................................... 17 Figure 5. McPhee Maximum Active Capacities ........................................................................... 26 Figure 6. Total McPhee Reservoir Inflow .................................................................................... 27 Figure 7. McPhee Ending Active Capacity and Yearly Spill ....................................................... 28 Figure 8. Percentage of Full Allocation Available ....................................................................... 29 Figure 9. General Location of Valves ........................................................................................... 48 Figure 10. General Location of Pipeline Improvements ............................................................... 50 Figure 11. Lower Arickaree General Location of Pipeline Improvements .................................. 55 Figure 12. Goodland General Location of Pipeline Improvements .............................................. 59 Figure 13. Moonlight General Location of Pipeline Improvements ............................................. 62 Figure 14. Location Map of Reservoir and Project....................................................................... 67 Figure 15. Totten Reservoir and Potential Inflows ....................................................................... 69 Figure 16. City of Cortez Annual Municipal Use ......................................................................... 74 Figure 17. November
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