Solano Subbas Solano Subbasin in Groundw Groundwat ater Sustaina er Sustainability Pl bility Plan an October 11, 2018 Maintaining a Sustainable Solano Subbasin 1
Solano Solano Subbas Subbasin in • Solano Subbasin: Current Boundary • BBMs in Progress SOLANO SUBBASIN 2 Maintaining a Sustainable Solano Subbasin
Objectiv Object ives o es of Solano f Solano Subb Subbasin asin GSP GSP Compliant Cost Multi Purpose Evaluate & Locally Specific, GSP Projects/ Effective GSP &Tools Select Management GSP Appropriate • Defensible • Water Budget Actions Flow Model Water (Surface Layer) • Approved Budget • For Feasible Cost- • Basin Scout by State • Optimize Existing Effective GW • GW Flow Model Model Info Sustainability Maintaining a Sustainable Solano Subbasin 3
Sc Schedule: hedule: Solano S Solano Subbasi ubbasin GSP n GSP anuary 31 st st , 2022 DWR De DWR Deadline to adline to Su Submit GS bmit GSP: J P: January 31 , 2022 Maintaining a Sustainable Solano Subbasin 4
Technical T echnical Team eam Org Organiz anization ation • Coordination with: • Solano Collaborative • Ag Innovations • The Freshwater Trust (TFT) • Team Roles • LSCE : GSP all tasks • KJ : Meeting coordination; document production • DE : Water budget; projects & management actions • WY : Support projects & management actions • ERA : Economic/feasibility analyses 5 Maintaining a Sustainable Solano Subbasin
Groun Groundw dwat ater Monitorin er Monitoring • Extensive CASGEM network where most groundwater used • Well construction and formations represented • Add’l monitoring facilities • SW/GW dedicated facilities 6 Maintaining a Sustainable Solano Subbasin
Groundw Groundwat ater er Co Conditi nditions: ons: Hi High Level Overview gh Level Overview Maintaining a Sustainable Solano Subbasin 7
Hydr Hydroge ogeologic Co ologic Conceptual Model: GSP nceptual Model: GSP Requir Requiremen ement • Solano Geologic Cross Sections; many more than one mile deep • Understand groundwater system B response to recharge and pumping B’ • Important basis for GW flow model structure Maintaining a Sustainable Solano Subbasin 8
Groundw Groundwat ater: er: Unconfined & Confined Unconfined: At atmospheric pressure; no overlying low Permeability materials Confined: Unconfined Groundwater under pressures greater than atmospheric by overlying low permeability (confining) materials Confined 9
So Solano Su lano Subbasin: Groundw bbasin: Groundwater Levels ater Levels Stable • Upper Zone of Tehama Formation and Quaternary Alluvium-Stable since 1970 (Unconfined) • Basal Zone-Stable since 2008 (Confined) Maintaining a Sustainable Solano Subbasin
Water Budgets ater Budgets • Account for all water budget inflows and outflows • Historical base period and projected • Describe relationship between SW and GW systems • Use local knowledge to evaluate and improve existing GW Models • Develop historical and future water budgets for: • All of Solano Subbasin • Each GSA 11
Groundwat Groundw ater and Sur er and Surface W ace Water Inte ater Interaction: action: A Key Sust A Key Su stainability In ainability Indica dicator tor • Monitoring data and hydrogeologic understanding to characterize SW/GW relationship • Gaining and losing reaches • Groundwater Dependent Ecosystems (GDEs) • Establish baseline data to accurately assess Putah Creek whether GW extraction is influencing streamflow • Establish appropriate sustainability metrics Ulatis Creek Maintaining a Sustainable Solano Subbasin
Sc Schedule: hedule: Solano S Solano Subbasi ubbasin GSP n GSP Maintaining a Sustainable Solano Subbasin 13
GSP GSP Outl Outlin ine CHAPTER GROUNDWATER SUSTAINABILITY PLAN SECTIONS • Draft TOC for GSP Executive Summary • Annotated Outline to 1 Introduction be Prepared 2 Plan Area 3 Basin Setting 4 Historical, Current and Projected Water Supply 5 Water Budget 6 Solano Subbasin Sustainability Goal 7 Monitoring Data Management & Reporting 8 Sustainable GW Management: Projects and Mgmt Actions 9 Plan Implementation 10 References Maintaining a Sustainable Solano Subbasin 14
Ag I Ag Innova nnovations tions rd Party , 3 rd Pr Providi oviding n ng neut eutral ral, 3 Party Facilita Facilitation of tion of th the Sol e Solano Subbasin ano Subbasin Grou roundwater S ndwater Sust staina ainabili bility P ty Pla lan Our scope includes • Inter-agency coordination • Public stakeholder process • Communications 15
Together, we are working towards a GSP that • Is complete and meets DWR requirements, and that creates a foundation for being able to steward and manage groundwater more effectively in the Solano Subbasin; • Contains a hydrological model for the subbasin and subbasin-specific sustainability goals relative to the 2015 levels; • Informs other useable, practical sets of tools; • Engages the community to create a stewardship understanding around water resources amongst the public for future generations. 16
Schedule: Schedule: Appr Approxima ximate Sta te Stakeholder eholder Engag Engagemen ement (Go (Goal: R al: Rob obust, w ust, wor orthwhile, meaningful, thwhile, meaningful, mul multiple lo tiple locations) cations) Maintaining a Sustainable Solano Subbasin 17
Solano Solano Subbas Subbasin in • Basin Prioritization • Solano Subbasin: SOLANO SUBBASIN Current Boundary (Red) • Basin Boundary Modifications Requested • Yolo Subbasin (Blue) • Northern Delta Subbasin (Purple) • Sacramento County (Green) 18 Maintaining a Sustainable Solano Subbasin
Thank Y Thank You ou 19
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