Greater Kaweah GSA Combined RCC & SC Meeting - - PDF document

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Greater Kaweah GSA Combined RCC & SC Meeting

Monday, June 24, 2019

www.GreaterKaweahGSA.org

ITEM 2: MINUTES

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ITEM 3: Summary of Kaweah Coordination

• Subbasin Basin Setting Components Report

– Nearing completion of incorporating clean up comments

• Numerical Model

– GSI completed Base Run Scenarios – GSI completed initial run of scenarios with Projects and Management Actions

• Draft Coordination Agreement discussions are ongoing.
• Completion of SkyTEM study

ITEM 3: Summary of Kaweah Coordination

• DMS funds from GSP grant to be reallocated to Basin contract
• Recent Management Team Committee meeting agenda included:

– Groundwater Quality suggested approach by GEI, and CV-SALTS presentation by Richard Meyerhoff (GEI) – Preliminary modeling results – DMS update and walk-through – Prop 68 funding discussion

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Kaweah Groundwater DMS

Objective: Develop a coordinated data storage, analysis, visualization, and reporting tool for groundwater-related information within the entire Kaweah Sub-Basin Key Features: 1) Store and display information from previous, ongoing, and future groundwater studies and monitoring programs 2) Protect against the loss of invaluable data 3) Facilitate direct production of tables, charts, maps, and graphs

External Data

(DWR, USGS, SWRCB, CDEC) Well Information GW Level Water Quality GW Pumping Water Supply Surface Water Geology Soil Land use

GDC Database

Data Input/Storage Graphic user Interface

GSP Reporting Water Budget Analysis GW Model Supporting Outreach Data Sharing/Exchange Data Exporting Mapping Hydrograph

System Overview

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What Will the DMS Do Near Term?

 Populated with key data required by SGMA  Chart GW levels  Chart GW pumping  Well searches – well location, construction, depth, production capacity, etc….  Data downloads  Limited charting of water quality  Support reporting to DWR  Support GSP Development  Integrate data through DWR SGMA Data Viewer

Consumptive use table ET table Inventory of all facilities DMS Data Model – Identify and Agree on Initial Data Sets to be Uploaded

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DMS During the SGMA Implementation Period

(As Funds Become Available)

Illustrate water budget components Be used as water allocation tool Auto generate geologic cross-sections Illustrate 3-dimentional information

– Basin storage and storage change calculations – Hydrogeologic conceptual model – Water quality imagery (i.e. shape and size of plumes)

Annual Reporting Tool Expansion in type and volume of data

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DMS Water Level Hydrograph

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Sustainability Goal and Undesirable Results

• 1. Provide Education and Information

– Groundwater Basin Conditions – Funding Opportunities – Remediation/Treatment Technologies

• 2. Active GSA Coordination with Water Quality Agencies and Coalitions

– Participate in meetings (salinity prioritization & optimization study, management zones) as a contributor of information, but also seeking information – Exchange/Share GW quality data and information between GSAs and other GWQ leads. – Request information to better inform 5-year GSP updates, include data in DMS as it becomes publicly available

• 3. Identify, Pursue, Administer Grants in Partnership with Water Quality Agencies

Options for GSA Participation in Water Quality Improvement Programs

Sustainability Goal and Undesirable Results

Suggested Additional Language – Self Help Enterprises “In order to avoid an undesirable condition, the GSA will collaborate, as needed, with the appropriate entities already currently regulating activities that may have an effect on groundwater quality. Project and management actions will be implemented, as needed and in partnership with these other entities, in order to decelerate and arrest the degradation of groundwater quality and protect sources of drinking water of further deterioration.”

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SMCs for Water Quality SMCs for Subsidence

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Initial GW Model Runs

2) Future No Project Scenario: Base Case

– Assumes current water budget conditions exist in the future modified only by DWR provided climate data sets and forecasts of supply and demand. Distribution of groundwater pumping is consistent with current water budget period – GW model forecasts future groundwater levels for comparison against minimum thresholds

Initial GW Model Runs

3) Future Management Actions Only: Pumping Reductions

– Assumes current water budget conditions exist in the future modified only by DWR provided climate data sets and forecasts of supply and demand and pumping conforms to water allocations in water accounting framework – GW model forecasts future groundwater levels for setting groundwater level measurable objective and interim milestones

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Initial GW Model Runs

4) Future Management Actions Only: Pumping Reductions + Projects

– Assumes current water budget conditions exist in the future modified only by DWR provided climate data sets and forecasts of supply and demand, pumping conforms to water allocations in water accounting framework, and projects area implemented on planned schedule. – GW model forecasts future groundwater levels for setting groundwater level optimal measurable objective and interim milestones

 Focused on modeling projects that are currently under construction or that are eminent  Conceptual projects will be described in the GSP but will not be taken credit for initially

• 3. Projects and Management Actions

Greater Kaweah:

Possible Projects and/or Management Actions Alternatives Targets as a Percentage of Average Annual Sustainable Yield Deficit (overdraft + half of basin subsurface inflow)

Alt. 2020-25 2026-30 2031-35 2036-40 Total 1 0% 20% 35% 45% 100% 2 5% 25% 30% 40% 100% 3 5% 20% 35% 40% 100% 4 10% 20% 30% 40% 100% 5 10% 30% 30% 30% 100% 6 25% 25% 25% 25% 100%

Alternatives Apportionment of Average Annual Net Increase in Supply Minus Subsurface Inflow & Reduction in Demand in Average Annual Acre-Feet

Alt. 2020-25 2026-30 2031-35 2036-40 Total 1 1 14,985 26,224 33,716 2 2 3,746 18,731 22,478 29,970 3 3 3,746 14,985 26,224 29,970 4 4 7,493 14,985 22,478 29,970 5 5 7,493 22,478 22,478 22,478 6 6 18,731 18,731 18,731 18,731 Goal Optimal

• GKGSA’s Target (1997-2017 Water Budget Apportioned to WAF) = 42,675 acre-feet/year
• Annual Native Yield of the Basin and GKGSA = 363,784 acre-feet or 0.82 acre-feet/acre/year
• GKGSA’s share of net subsurface inflow from adjacent subbasins = 32,250 acre-feet/year

Average Annual Project & MA Targets and Goal/Optimal Goal Differences for Interim Periods (acre-feet)

2020-25 2026-30 2031-35 2036-40 Targets 24,975 33,577 70,769 83,615 Goal Diff 21,229 14,846 25,814 8,690 Opt Diff 17,482 11,099 25,814 8,690

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• 3. Projects and Management Actions

Greater Kaweah:

Annual Project & MA Targets For Input To The Model (Acre-Feet)

Water Year Projects Specific MAs Undefined MAs Annual Total Running Total 2020 9,400 9,400 9,400 2021 9,700 4,500 750 14,950 24,350 2022 9,700 4,000 1,000 14,700 39,050 2023 69,400 8,000 1,250 78,650 117,700 2024 10,200 4,000 1,500 15,700 133,400 2025 10,200 4,500 1,750 16,450 149,850 2026 10,200 4,000 3,857 18,057 167,907 2027 83,000 8,000 3,857 94,857 262,764 2028 10,300 4,000 3,857 18,157 280,921 2029 10,300 4,500 3,857 18,657 299,578 2030 10,300 4,000 3,857 18,157 317,735 2031 94,100 8,000 19,149 121,249 438,984 2032 10,500 4,000 19,149 33,649 472,633 2033 10,500 4,500 19,149 34,149 506,782 2034 10,500 4,000 19,149 33,649 540,431 2035 104,000 8,000 19,149 131,149 671,580 2036 10,600 4,000 48,715 63,315 734,895 2037 10,600 4,500 48,715 63,815 798,710 2038 10,600 4,000 48,715 63,315 862,025 2039 107,600 8,000 48,715 164,315 1,026,340 2040 10,600 4,000 48,715 63,315 1,089,655

MT Preliminary Projects & Management Actions Model Run Results

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MT Preliminary Projects & Management Actions Model Run Results MT Preliminary Projects & Management Actions Model Run Results

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GSP Development

• Basin Setting Chapter

– GKGSA Basin Setting Chapter to be completed with Basin Setting Components Report. The TAC has provided comments on the report, which are being reviewed and addressed.

• Monitoring Network Chapter

– Chapter has been revised to reflect comments and provided to TAC to verify addressing of comments. Discussions with other GSAs on coordinated Monitoring Network improvements to finalize Representative Monitoring Sites selection.

• Sustainability Goal and Undesirable Results Chapter

– In draft, to be completed with incorporation of GSAs’ feedback and approval of Undesirable Results definitions and adoption of Sustainability Goal for the Subbasin.

• Sustainable Management Criteria Chapter

– Draft chapter to be revised with Minimum Thresholds and Measurable Objectives, based on TAC, RCC, and SC recommendations.

• Projects and Management Actions Chapter

– Draft chapter under internal review, includes projects and management actions discussed so far, at

• committees. Project / MA forms being finalized to inform chapter development.

GSP Development Milestones

GSP Section/Sub Section Completion Date Revised Completion Date Percent Complete

1. Introduction Draft in for Review 95% 2. Basin Setting Friday, March 29, 2019 Friday, June 14, 2019 80% 3. Sustainability Goal & Undesirable Results Friday, April 19, 2019 Friday, June 21, 2019 75% 4. Monitoring Networks Friday, April 12, 2019 Tuesday, June 18, 2019 80% 5. Minimum Thresholds, Measurable Objectives, & Interim Milestones Friday, April 26, 2019 80% 6. Water Supply Accounting Friday, April 19, 2019 65% 7. Projects, Management Actions and Adaptive Management Friday, April 26, 2019 Tuesday, June 21, 2019 60% 8. GSP Reporting Friday, April 26, 2019 75%

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SMC Thresholds and Objectives – Iterative Process Developed by Stakeholders Informed by technical information including groundwater modeling Basin Setting/Water Budget Refinements Projects and Management Actions

SUBBASIN ACTIVITIES

Groundwater Model Refinement SMC Goal and SI Assessment Complete Basin Setting Chapter Groundwater Model Simulations

GSA Deliverable

Define Management Areas Develop Thresholds and Objectives for MAs Water Level Projections Draft Monitoring Network Chapter Complete Monitoring Network Chapter Complete SMC Chapter

Jan Feb Mar Apr May Jun

Water Supply Accounting Framework Draft Water Supply Accounting Chapter

Draft GSP Development Schedule GSP Public Review Draft

• Goal is to have Board approval of Public Review Draft GSP at a special

meeting in late July (Mid-Kaweah mid-July, East Kaweah late-July)

• 90-day notice of public hearing (late October)
• Schedule allows 2 months to address comments (comments will be

addressed as they come in) followed by one month to adopt and submit the GSP to DWR

• DWR is required to establish its own GSP public comment period of no less

than 60 days for an adopted plan

• A GSP that is determined to be incomplete after the deadline may be

revised and resubmitted to DWR within 180 days from the date DWR issues the assessment

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ITEM 5: GKGSA MEETINGS REPORT ITEM 6: COMMUNICATION AND ENGAGEMENT