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

4/23/2018 North Basin 1

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

4/23/2018 North Basin 2

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

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

• 700,000
• 600,000
• 500,000
• 400,000
• 300,000
• 200,000
• 100,000

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

Basin Production Percentage Accumulated Overdraft

OCWD Groundwater Basin Accumulated Overdraft and Basin Production Percentage

6/30/18 Projection ~ 287,000 af

Accumulated Overdraft Target

4/23/2018 North Basin 3

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

4/23/2018 North Basin 4

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

4/23/2018 North Basin 5

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