Cal Water SGMA Outreach Meeting November 14, 2018
Welcome
Event Format • Open house style • 30 minute introductory presentation • Opportunity to ask questions, learn more, and provide input! 3
About SGMA
What is SGMA? The Sustainable Groundwater Management Act , or SGMA, is new statewide legislation that establishes a path for the sustainable management of groundwater for the first time in California’s history. 5
What Does SGMA Require? • Groundwater Sustainability Agencies (GSAs) must be formed. GSAs must prepare and submit Groundwater Sustainability Plans (GSPs) by • January 2020, for critically overdrafted basins • January 2022, for remaining high and medium priority basins • GSPs must include measurable objectives and milestones in increments of five years to achieve sustainability within 20 years of GSP adoption • GSP development must be open and transparent 6
Where is the Eastern San Joaquin Subbasin Boundary? ESJ Subbasin boundaries: • North – Dry Creek • West – San Joaquin River • South – Stanislaus River • East – Sierra Nevada Bedrock Outcrop 1,207 square miles 7
Eastern San Joaquin is Classified as a High Priority Critically Overdrafted Basin This means an accelerated GSP submittal deadline Eastern San of January 31, Joaquin Subbasin 2020 8
GSP Development Approaches 1 Basin, 1 GSA, 1 Plan • One GSA assumes responsibilities and authorities for the entire basin • New or existing agency 1 Basin, Multiple GSAs, 1 Plan ESJ • Several GSAs in same basin Subbasin • Requires significant coordination among GSAs • Still evaluated based on basin-level implementation of GSP 1 Basin, Multiple GSAs, Multiple Plans • Flexibility in terms of responsibilities and authorities • Requires a single coordination agreement among all GSAs for the entire basin • Still evaluated based on basin-level implementation of GSP (could get messy) 9
GSP Development Tasks Technical Topics Hydrologic Model Historical Water Budget Hydrogeologic Current Baseline Analysis Projected Water Budget Data Management System Policy Topics Undesirable Results Minimum Thresholds Sustainability Goals Measurable Interim Objectives Milestones Water Monitoring Accounting Network Implementation Topics Economics & Projects & Management Actions Funding Draft GSP & Implement. Plan May 2019 Jun 2019 Jul 2019 Jan 2020 Dec 2018 Jan 2019 Mar 2019 Apr 2019 Jun 2018 Jul 2018 Aug 2018 Sep 2018 Oct 2018 Nov 2018 Feb 2019
SGMA Requires Accounting of All Water Uses and Sources • SGMA requires an accounting of all groundwater and surface water entering and leaving a basin • Through SGMA, GSAs are required to bring the basin into balance, halting groundwater overdraft 11
SGMA Requires Six Sustainability Indicators to be Addressed Chronic Degraded water Reduction of lowering of quality groundwater groundwater storage levels Depletions of Seawater interconnected Land subsidence intrusion surface waters 12
ESJ Subbasin: 17 GSAs, One GSP 17 GSAs are working collaboratively to develop a single GSP The GSAs formed the Eastern San Joaquin Groundwater Authority (GWA) to jointly develop and implement the Eastern San Joaquin GSP 13
Overview of Current Basin Conditions
Current Basin Conditions What is the current status of Subbasin across each of the 6 sustainability indicators under SGMA? Chronic Degraded water Reduction of lowering of quality groundwater groundwater storage levels Depletions of Seawater interconnected Land subsidence intrusion surface waters 15
1) Groundwater Elevations 4 th Quarter 2017 Groundwater Elevation (ft.) Groundwater elevations have declined in recent decades due to increased pumping activity. Currently, a “cone of depression” exists in the central portion of the Subbasin, where elevations are at their lowest. 16
2) Groundwater Storage The Eastern San Joaquin Subbasin has large amounts of fresh groundwater stored in its aquifers – over 50 million acre-feet, or enough to theoretically sustain the basin for centuries. However, as groundwater elevations decline, it will become increasingly difficult and expensive to reach this water. 17
3) Water Quality Maximum Total Dissolved Solids (TDS) 2008-2018 (mg/L) Salinity contamination of freshwater wells is a concern in some areas of the Subbasin. These areas are primarily located in the western half of the Subbasin. 18
4) Seawater Intrusion Direct seawater intrusion does not occur in the Subbasin. Salinity will be addressed via the water quality sustainability indicator. 19
5) Land Subsidence Corcoran Clay Thickness (ft.) Subsidence potential exists in a small portion of the Subbasin where there is pumping from below the Corcoran Clay layer. Groundwater elevations in this area are typically high compared to the rest of the basin, and land subsidence is not likely. 20
6) Depletion of Interconnected Surface Waters Streams identified as losing streams will be managed to protect against significant and unreasonable stream depletion. Losing Stream Gaining Stream 21
Projects & Management Actions
Projects & Management Actions How will we reduce reliance on groundwater pumping, increase recharge, and bring the basin into balance by 2040? • 31 potential projects have been proposed to date • These projects include a range of groundwater recharge, surface water transfers, conservation and more! 23
Projects Received – Part 1 of 3 Project # Project Description Submitting GSA Category 1 Farmington Dam Repurpose Project SEWD Recharge 2 Lake Grupe In-Lieu Recharge SEWD Recharge 3 Raw Water Reliability and Recharge SEWD Recharge 4 SW Implementation Expansion SEWD SW Supply 5 SW Facility Expansion & Delivery Pipeline City of Lodi SW Supply 6 White Slough WPCF Expansion City of Lodi Recycling 7 Recycled Water Transfer to Agriculture City of Manteca Recycling/Transfers 8 Demand Management Measures City of Manteca Conservation 9 Water Transfers to SEWD and CSJWCD SSJ GSA Transfers 10 Increase Nick DeGroot SW Deliveries SSJ GSA SW Supply 11 City of Escalon Wastewater Reuse SSJ GSA Recycling 24
Projects Received – Part 2 of 3 Project # Project Description Submitting GSA Category 12 South San Joaquin Stormwater Reuse SSJ GSA Stormwater 13 Pressurization of SSJID Facilities SSJ GSA Conservation 14 BNSC Intermodal Facility Recharge Pond CSJWCD Recharge 15 CSJWCD Capital Improvement Program CSJWCD SW Supply 16 Recycled Water Program Expansion City of Lathrop Recycling 17 LAS-3 Percolation Basin City of Lathrop Recharge 18 Conjunctive Use of GW and SW City of Lathrop SW Supply 19 City of Lathrop UWMP Water Conservation City of Lathrop Conservation 20 NPDES Phase 2 MS4 Compliance Program City of Lathrop Stormwater 21 Water Meter Improvements City of Lathrop Conservation 22 City of Ripon Surface Water Supply SSJ GSA SW Supply 25
Projects Received – Part 3 of 3 Project # Project Description Submitting GSA Category 23 Cal Fed GW Recharge Project NSJWCD Recharge 24 Mokelumne River Loss Study NSJWCD Accounting 25 North System Modernization NSJWCD SW Supply 26 PDA Banking NSJWCD SW Supply 27 South System Modernization NSJWCD SW Supply 28 Tracy Lakes GW Recharge NSJWCD Recharge 29 Winery Recycled Water NSJWCD Recycling/Recharge 30 Advanced Metering Infrastructure City of Stockton Accounting 31 Mobilizing Recharge Opportunities San Joaquin County Recharge 26
Ways to Get Involved
GWA Website: esjgroundwater.org 28
Sign Up to Receive Updates and Announcements 29
Attend Meetings Attend GWA Board Meetings 2 nd Wednesdays, 11 AM Robert J. Cabral Center, Assembly Room 1 Attend GWA Advisory Committee Meetings 2 nd Wednesdays, 9 AM Robert J. Cabral Center, Assembly Room 1 Attend GW Sustainability Workgroup Meetings Approximately monthly (see website for updates) Participate in Informational Meetings Approximately quarterly (see website for updates) 30
Quarterly Informational Meetings • Quarterly informational meetings are held in locations throughout the Subbasin • The next informational meeting will occur in the January timeframe. Details will be posted to the website and Facebook page 31
Watch for Information from Your Local GSA Flyers: Available in English and Spanish Press Releases: For organizations to include in their newsletters/blogs Social Media Posts: Facebook posts and Tweets by GSA member agencies 32
We’re On Facebook! For information on upcoming events and updates on the GSP development process, you can follow the GWA on facebook. https://www.facebook.com/ESJGroundwaterAuthority 33
Cal Water SGMA Outreach Meeting November 14, 2018
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