Briefing on Groundwater Sustainability Plan Initiation

Transcription

1 Briefing on Groundwater Sustainability Plan Initiation Sonoma Valley Groundwater Sustainability Agency Advisory Committee Meeting April 10, 2018 sonomacountygroundwater.org

2 Presentation Overview 1. Groundwater Sustainability Plan Requirements 2. GSP Grant Application Work Plan 3. Proposed Schedule/Next Steps 4. Questions & Discussion sonomacountygroundwater.org

3 Groundwater Sustainability Plan Requirements DWR developed requirements and regulations 2016 Describe who you are and the basin s geology and hydrogeology Describe how you will define and measure sustainability Identify programs and projects that get you to sustainability Implementation information Ongoing development of Best Management Practices and Guidance Documents by DWR sonomacountygroundwater.org

4 Plan Area and Basin Setting Plan Area Largely organizational information Maps of cities and towns Land use Well density Existing groundwater management activities Existing general plans Basin Setting Largely technical section Geology At least 2 geologic cross-sections per basin Historical and current groundwater conditions and budgets Groundwater recharge Groundwater pumping Change in storage Estimate of Sustainable Yield Future groundwater budget Include effects of climate change Existing monitoring programs sonomacountygroundwater.org

5 Sonoma Valley Groundwater Studies Key Findings/Outcomes: Complex Geology Brackish groundwater in southern Sonoma Valley Increased pumping since early 1980s Areas of declining groundwater levels Development of Groundwater Flow Models USGS, 1960 DWR, 1982 USGS, 2006 SVGMP, 2014 sonomacountygroundwater.org

6 Sonoma Valley GMP Program Activities sonomacountygroundwater.org Groundwater-Level and Streamflow Monitoring Involvement of Community Stakeholders Monitoring Well Construction & Data Collection Groundwater Model Update and Initial Alternatives Analyses

7 New Requirements vs Existing Information: Plan Area and Basin Setting Example Groundwater Conditions sonomacountygroundwater.org Example of Required GSP Component* Information available from existing GMP or studies Additional GSP Requirements Groundwater Conditions Description of groundwater elevation trends over time, groundwater elevation hydrographs and contour maps, groundwater quality data. Annual and cumulative change in groundwater storage based on groundwater-level changes, description and map of known groundwater contamination sites and plumes, rates and map of land subsidence (as applicable) identification of interconnected surface waters and groundwater dependent ecosystems and estimates on timing and quantity of stream depletions. *Represents one of many required GSP components

8 Sustainable Management Criteria Avoid significant and unreasonable undesirable results for the following six sustainability indicators: Define basin-wide undesirable results for each applicable sustainability indicator (e.g., groundwater-levels will not fall below x% of well screens) Set measureable thresholds and measurable objectives for each sustainability indicator Iterative process that will require significant stakeholder and community input

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10 Project and Management Actions Evaluate and select projects and actions that will achieve sustainability in 20 years (e.g., recycled water, stormwater recharge, groundwater banking, demand management, etc.) Demonstrate sustainability will be maintained for 30 years thereafter Agree on how to fund these programs Backup or supplemental plans may be needed if preferred projects and programs are not adequate Projects & Programs Achieve Sustainability within 20 years Maintain Sustainability for next 30 years

11 Basin Advisory Panel Recommended Management Strategies sonomacountygroundwater.org CONSERVATI ON of Urban, Non- Urban, & Agriculture WATER REUSE use to offset groundwater pumping GROUNDWATER BANKING Russian River winter-time water to recharge groundwater basin STORMWATE R to recharge groundwater

12 GSP Work Plan Objectives Meet SGMA requirements - establish criteria and management actions to achieve and maintain sustainable groundwater. Build on strong technical foundation established through previous technical studies and voluntary groundwater management activities. Provide opportunity for significant public and community engagement and integrate the perspectives and address the needs of the many diverse users and uses of groundwater resources within the basin. Leverage local resources through continued regional coordination and information sharing.

13 Process for Sonoma Valley GSP Development Sustainable by 2042 ry ts to en a t u em t l Initiate Plan & Describe Basin Conditions Initial Notification Plan Area and Basin Setting Define Sustainability & How to Measure Evaluate & Scope Projects/Actions Sustainable Management Projects and Management Criteria Actions Monitoring Program Implementation Plan Adopt Plan for Implementation Complete Plan and Adopt Submit to DWR C E n em mu ag om ng ity ent Techni c Ac tiv al itie Work s S E

14 Process for Sonoma Valley GSP Development Sustainable by 2042 Statutory Elements Technical Work Activities Initiate Plan & Describe Basin Conditions Initial Notification Plan Area and Basin Setting Describe Plan Area Evaluate and Describe Basin Setting Hydrogeologic Conceptual Model Groundwater conditions Water budget Management areas Update Computer Model Complete development of Data Management System and Public Data Portal Define Sustainability & How to Measure Sustainable Management Criteria Monitoring Program Develop Sustainable Management Criteria Sustainability goal Undesirable results Minimum threshold Measurable objective Interim milestones Data analysis and modeling Assessment of data gaps and improvement of monitoring network Establish Monitoring Program with protocols to measure criteria Evaluate & Scope Projects/Actions Projects and Management Actions Implementation Plan Identify, Evaluate, and Select Proposed Projects and Management Actions Computer model simulations Feasibility analyses Screening & prioritization Uncertainty analyses Contingency planning Develop GSP Implementation Plan including: Funding plan Detailed schedule Reporting system Adopt Plan for Implementation Complete Plan and Adopt Submit to DWR Compile and Complete GSP Prepare Administrative and Jurisdictional information Executive Summary Address Community Input Present GSP to GSA Board for adoption Submit GSP to DWR Community Engagement

15 Process for Sonoma Valley GSP Development Sustainable by 2042 Statutory Elements Technical Work Activities Community Engagement Initiate Plan & Describe Basin Conditions Initial Notification Plan Area and Basin Setting Describe Plan Area Evaluate and Describe Basin Setting Hydrogeologic Conceptual Model Groundwater conditions Water budget Management areas Update Computer Model Complete development of Data Management System and Public Data Portal Submit Initial Notification to Prepare GSP to DWR Community Engagement Plan Fact Sheet on Basin Status Public workshop on Plan Area and Basin Setting Define Sustainability & How to Measure Sustainable Management Criteria Monitoring Program Develop Sustainable Management Criteria Sustainability goal Undesirable results Minimum threshold Measurable objective Interim milestones Data analysis and modeling Assessment of data gaps and improvement of monitoring network Establish Monitoring Program with protocols to measure criteria Fact Sheets/FAQs on Sustainable Management Criteria and Monitoring Public workshops at key milestones associated with technical work Evaluate & Scope Projects/Actions Projects and Management Actions Implementation Plan Identify, Evaluate, and Select Proposed Projects and Management Actions Computer model simulations Feasibility analyses Screening & prioritization Uncertainty analyses Contingency planning Develop GSP Implementation Plan including: Funding plan Detailed schedule Reporting system Fact Sheets/FAQs on Projects and Management Actions Public workshops at key milestones associated with technical work Ongoing Website & Updates and Media Outreach GSA Board & Advisory Committee Public Meetings Adopt Plan for Implementation Complete Plan and Adopt Submit to DWR Compile and Complete GSP Prepare Administrative and Jurisdictional information Executive Summary Address Community Input Present GSP to GSA Board for adoption Submit GSP to DWR Public Review GSP Draft Public Notice of GSP adoption Public Hearing to Adopt GSP Fact Sheets/FAQs on GSP

16 Key Data Needs and Challenges Improved water use estimates for rural groundwater users (rural domestic and agriculture), which comprise over an estimated 80% of the total groundwater use. Depth-dependent water level and water quality data to improve understanding of the hydrogeology and better define relationships between the shallow and deeper aquifer systems. Improved information is needed about well location, lithology and construction to better understand Basin hydrogeology and improve the groundwater model. Additional modeling of future projected conditions that simulate the impacts of climate change, land use changes, hydrology, and changes in demands.

17 Key Data Needs and Challenges More information to address potential depletion of interconnected surface water from groundwater pumping Identifying undesirable results as defined in SGMA and establishing quantifiable thresholds. Transitioning from a voluntary groundwater management plan to a new plan with regulatory authority will require extensive public outreach and community engagement.

18 Proposed Budget for GSP Development Prop 1 Grant Application Project Title: Task 1 Task 2 Task 3 Sonoma Valley Groundwater Sustainability Plan Project Project serves the need of a DAC?: Yes Cost Share Waiver request?: Yes Tasks Formation of GSA & Establishment of Governance Structure Requested Grant Amount (a) (b) (c) (d) Historical Cost Share: Non-State Fund Source Future Cost Share: GSA- Total Cost Share Funded Total Project Cost Public Outreach/Community Engagement $99,981 $ 107,983 $ 107,983 $ 207,964 GSP Development $900,019 $ 96,425 $ 96,425 $ 996,444 Phase I - Prepare and Submit Initial Notification of GSP Preparation $3,264 $ 3,264 Phase II - Define Plan Area and Basin Setting 96,425 $ 96,425 $ 192,850 Phase III - Develop Sustainable Management Criteria $318,120 $ 318,120 Phase IV - Design Sustainability Progress Monitoring Program $131,460 $ 131,460 Phase V - Identify and Evaluate Projects and Management Actions $213,850 $ 213,850 Phase VI - Develop GSP Implementation Program, Costs, Detailed Schedule and Reporting $97,360 $ 97,360 Task 4 Phase VII - Compile Complete GSP for Adoption by GSA $39,540 $ 39,540 Project Management & Grant Administration $ 35,680 $ 35,680 $ 35,680 Grand Total $ 1,000,000 $ 240,088 $ 240,088 $ 1,240,088

19 Grant Application Status Proposition 1 Grant Application submitted in December 2017 for GSP Development DWR issued Draft funding recommendations February 2018 to fully fund the requested $1 Million to the Sonoma Valley GSA for GSP development Public Comment Period closed February 28, 2018 Final Notification of $1 Million in funding to the SV GSA from DWR received on April 4, 2018

20 Next Steps April: Begin contracting with DWR for grant funding(?) Develop Detailed Schedule/Activities for initial draft GSP sections (Plan Area and Basin Setting, including Hydrogeologic Conceptual Model and Groundwater Conditions) Begin drafting initial GSP sections/materials May/June: Contracting with DWR for grant funding(?) Advisory Committee begin review of initial draft GSP materials and data

21 Next Steps (continued) May 2018 Primer on Groundwater Science Input on Plan Area Information Land Use and Well Density Maps Summary of local land use planning June - August 2018 Review of Hydrogeologic Conceptual Model (HCM) requirements Input on HCM and Groundwater Conditions materials, including Geologic cross sections Monitoring Networks Groundwater level contour maps and hydrographs Maps of interconnected surface water and groundwater-dependent ecosystems Groundwater quality information September October 2018 Hydrogeologic Conceptual Model and Groundwater Conditions Review of Water Budget components and discussion of uncertainty Input on Water Budget materials and assumptions Water demands Historical, baseline and projected water budget calculations/simulations November - December 2018 Water Budget Discussion Recommendations on Management Areas

22 Questions and Discussion