OCWD MWDOC Joint Planning Committee Meeting Orange County Water - PDF document

4/23/2018 OCWD MWDOC Joint Planning Committee Meeting Orange County Water District Update April 25, 2018 1 Untreated MWD Deliveries • 65,000 acre-feet in budget • 42,737 acre-feet of water purchased through March 2018 • Water not available in March • OCWD now taking 130 cfs (260 af/day) 2 North Basin 1

4/23/2018 Treated In-lieu Water Deliveries Under Cyclic Storage Agreement • Goal was to take deliver of 100,000 acre-feet • Deliveries suspended at end of January 2018 • ~73,000 acre-feet received • OCWD has paid for 60,000 acre-feet of water at 2018 $666/af rate • Remaining 13,000 acre-feet to be purchased with FY18-19 budget at the $695/af 2019 rate 3 OCWD Groundwater Basin Accumulated Overdraft and Basin Production Percentage 100% 0 90% -100,000 Basin Production Percentage Accumulated Overdraft Target 80% Accumulated Overdraft -200,000 70% 60% -300,000 50% -400,000 40% 30% -500,000 6/30/18 Projection 20% -600,000 ~ 287,000 af 10% 0% -700,000 Jun-56 Jun-57 Jun-58 Jun-59 Jun-60 Jun-61 Jun-62 Jun-63 Jun-64 Jun-65 Jun-66 Jun-67 Jun-68 Jun-69 Jun-70 Jun-71 Jun-72 Jun-73 Jun-74 Jun-75 Jun-76 Jun-77 Jun-78 Jun-79 Jun-80 Jun-81 Jun-82 Jun-83 Jun-84 Jun-85 Jun-86 Jun-87 Jun-88 Jun-89 Jun-90 Jun-91 Jun-92 Jun-93 Jun-94 Jun-95 Jun-96 Jun-97 Jun-98 Jun-99 Jun-00 Jun-01 Jun-02 Jun-03 Jun-04 Jun-05 Jun-06 Jun-07 Jun-08 Jun-09 Jun-10 Jun-11 Jun-12 Jun-13 Jun-14 Jun-15 Jun-16 Jun-17 Jun-18 North Basin 2

4/23/2018 FY 17-18 Groundwater Basin Water Balance Water Source Budgeted Figures Projections SAR Baseflow 62,500 65,000 SAR Stormflows 41,000 25,000 Incidental Recharge 52,000 30,000 GWR System 103,000 103,000 MWD Supplies 165,000 138,000 Other 2,000 2,000 Total Water Into Basin 425,500 363,000 Basin Pumping – 75% 303,000 321,000 Gain/Loss 122,000 42,000 Corp Website ‐ http://www.spl.usace.army.mil/Missions/CivilWorks/ReservoirRegulation.aspx North Basin 3

4/23/2018 OCWD FY2018-19 Rates • Replenishment Assessment increased from $445/af to $462/af • Basin Production Percentage increased from 75% to 77% 7 Basin Storage Discussions • Currently modeling different drought scenarios with Producers and OCWD Water Issues Committee • Estimating the basin drawdown during a drought period (increase to the accumulated overdraft) – How much storage is needed? • Determining if any basin storage space remains for sale to others? • Report back to OCWD Board in ~ June 8 North Basin 4

4/23/2018 Poseidon Resources Update • Potential OCWD Board update in early summer • Poseidon still working with RWQCB – Summer hearing likely • California Coastal Commission – Late 2018 or early 2019 9 North Basin 5