CAGRD Plan of Ope r ation Wate r Supply Plan August 21, 2014 1
Statutory Requirement for Water Supply Plan A.R.S. § 45-576.02.C.2 (c) - CAGRD Water Supply Plan: A description of the water resources that CAGRD plans to use for replenishment during the 20 years following submission of the Plan; and the water resources potentially available to the CAGRD for replenishment during the subsequent 80 years. A.R.S. § 45-576.03.N.1 – ADWR Review of Plan: The Director shall determine whether CAGRD has identified sufficient water supplies to meet it replenishment obligations for current members during the 20 years following submission of the Plan; and has identified additional water supplies potentially available to meet the replenishment obligation for the 100 years following submission of the Plan for current members and potential members. 2
Policies Governing Water Supply Program No condemnation authority. • Negotiate directly with on-river irrigation districts. • Fiduciary duty to CAGRD members requires negotiating fair and reasonable prices for • supplies. Consider potential 3 rd party impacts associated with any proposed water • acquisition/transfer. Timing of new supply acquisitions matched to obligations. • Balance of approximately 50% short-term/50% long-term. • Supply diversity. • Not a water provider, therefore can utilize supplies that might be less attractive to • municipal providers. 3
Obligation by Current Versus Potential Members (acre-feet) 90,000 ◄ Actual Projected ► 80,000 24,100 Potential Members 70,000 Current Members 60,000 50,000 40,000 62,800 30,000 20,000 10,000 0 4
Supplies Planned for Use: 2015-2034 Current CAGRD Portfolio Supply Class Annual Volume Year Available Term (AF/YR, 100 years) CAP M&I 7,996 2011 Permanent CAP Tribal (WMAT) 2,500 2016 100 year lease CAP NIA 18,185 2016 Permanent Long-term Credits 5,452 2014-2114 100 year Effluent 2,400 2017 100 year lease Total 36,533 5
Summary of Water Supplies CAGRD Plans to Use, 2015 – 2034 and Supplies Potentially Available for Use, 2035 – 2114 Supplies CAGRD Plans to Use – Next 20 Supplies Potentially Available to Years CAGRD – Subsequent 80 Years Total Current Supply Low (AF/yr, 100 High (AF/yr, 100 Low (AF/yr, 100 High (AF/yr, 100 Supply Category Supply Location (AF/yr, 100 yrs) yrs) yrs) yrs) yrs) Long-Term Storage Phoenix AMA, Pinal AMA, Tucson AMA, Credits Harquahala INA 88,900 11,000 22,000 11,000 22,000 Effluent Phoenix AMA, Pinal AMA, Tucson AMA 407,600 59,600 119,200 76,100 152,300 Central Arizona All Contracts, Subcontracts, and Project Unallocated Supplies 1,415,000 279,700 559,300 207,700 415,500 Arizona Entitlements Excluding CAP Colorado River 1,143,700 109,800 219,700 109,800 219,700 Supplies Imported Groundwater Harquahala, Butler, McMullen Valleys 269,000 0 0 119,600 239,100 Arizona Desalination Yuma-area, Phoenix AMA 40,000 0 0 14,000 40,000 Total 3,364,200 460,100 920,200 538,200 1,088,600 6
Long-Term Storage Credits • Total Current Supply: 88,900 AF/YR – Total existing Phoenix, Pinal, Tucson, Harquahala LTSCs • Plan to Use (20 Yrs): 11,000 – 22,000 AF/YR – LTSCs not owned by CAWCD, CAGRD, AWBA and not pledged to a DAWS; low estimate assumes 50% success rate • Potentially Available (80 Yrs): 11,000 – 22,000 AF/YR 7
Effluent • Total Current Supply: 407,600 AF/YR – Total Phoenix, Pinal and Tucson AMA current annual production • Plan to Use (20 Yrs): 59,600 – 119,200 AF/YR – All currently discharged/unused effluent; low estimate assumes 50 % success rate • Potentially Available (80 Yrs): 76,100 – 152,300 AF/YR – All currently discharged/unused effluent, escalated over the next 20 years based on the State’s population growth projections. – Low estimate assumes 50% success rate 8
Central Arizona Project • Total Current Supply: 1,415,000 AF/YR – All CAP subcontract and unallocated volumes • Plan to Use (20 Yrs): 279,000 – 559,300 AF/YR – All subcontract water not ordered plus all short-term tribal lease water plus all tribal water delivered to recharge facilities; Low estimate assumes 50% success rate • Potentially Available (80 Yrs): 207,000 – 415,500 AF/YR – 20 year volume reduced for assumed increased on- reservation use. Tribal allocations reduced by 50%. 9
Colorado River • Total Current Supply: 1,143,700 AF/YR • Plan to Use (20 Yrs): 109,800 – 219,700 AF/YR – 20% of average annual on-river agricultural consumptive use; Low estimate assumes 50% success rate • Potentially Available (80 Yrs): 109,800 – 219,700 AF/YR 10
Imported Groundwater • Total Current Supply: 269,000 AF/YR • Plan to Use (20 Yrs): 0 AF/YR • Potentially Available (80 Yrs): 119,600 – 239,100 AF/YR – 36 KAF McMullen Valley – 65 KAF Butler Valley – 138 KAF Harquahala Valley – Low estimate assumes 50% success rate 11
Arizona Desalination • Total Current Supply: 0 AF/YR • Plan to Use (20 Yrs): 0 AF/YR • Potentially Available (80 Yrs): 14,000 – 40,000 AF/YR 12
SUMMARY Projected 2034 obligation: 86,900 AF/YR Existing portfolio 36,500 AF/YR will be used to meet obligation Additional new supplies needed: 50,400 AF/YR New supply acquisitions per CAGRD Acquisition Program Strategy Water Supply Inventory describes supply types and range of potentially available supplies for 20 and 80 year period 20 year supply – Credits, Effluent, CAP Water, Colorado River Water 80 year supply – includes all supplies in 20 year plus lower priority supplies: Imported Groundwater, Arizona Desalination CAGRD demand represent small fraction of available supply 13
Que stions? 14
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