Agenda 1. Roll Call, Agenda Overview and Introductions 2. Public - - PDF document

4/18/2019 1

Kaweah Sub-Basin (KSB) Management Team Committee Meeting

Exeter Museum 125 South B Street, Exeter CA 93221

March 20, 2019 9:00 am

Agenda

• 1. Roll Call, Agenda Overview and Introductions
• 2. Public Comment
• 3. Groundwater Sustainability Agency Updates and Progress
• 4. Coordination Agreement Status
• 5. Consultant Presentation
• 6. Other Business
• 7. Closed Session
• 8. Closed Session Item

9. Adjournment

4/18/2019 2

KSB Basin Setting Status

• KSB Managers and GSA TAC recently completed review of

December 1, 2019 Draft Basin Setting

• Approved Amended Task Order KSB-05.2018 – Basin Setting at

February Meeting

• GEI Team has incorporate KSB Managers comments

addressing these issues: 1. Decrease Kaweah River and CVP Water deliveries 2. Decrease Mountain Front Recharge in EKGSA and portions of GKGSA 3. Recalculate percolation or precipitation and applied water during period 1981-1999 using different methodology 4. Improve boundary flux estimates using numerical groundwater model 5. Document the specific yield method for calculating change in groundwater basin storage

Revised Water Budgets

Each of these three water budgets periods have been refined with the recent Basin Setting Update

• Historic Period – 1981 to 2017
• Current Period – 1997 to 2017
• Projected Future – 2017 to 2070

4/18/2019 3

Summary of Historical and Current Periods

Cumulative Change in During Current Period:

• 1,629,400 Acre-feet

QC Checks on Water Budget Accounting

Specific Yield Analysis Groundwater Modeling

Method Historic Period Modeling Period Water Budget (Inventory)

• 2,428,500
• 2,715,500

Specific Yield

• 3,127,300
• 2,948,600

Numerical Model

• 2,656,000

4/18/2019 4

Average Overdraft During Historical and Current Periods

Historical Average Overdraft: 65,600 AF/Y Current Average Overdraft: 77,591 AF/Y

Projected Water Budget

4/18/2019 5

Water Supply Accounting Framework Next Steps

• Water Budget Allocation by GSA to be completed in April
• Work Continuing on development of draft GSP Chapters
• Detailed GSP schedule to be developed for MKGSA to be

developed soon and will serve as tool for coordinating with public and other GSAs

– Duration of internal review of GSP Chapters – Comment period (both informal and the 90-day requisite period this fall)

• GW Model simulations