EKI TECHNICAL PRESENTATION #1 COSUMNES SUBBASIN GSP DEVELOPMENT 17 OCTOBER 2018 COSUMNES SUBBASIN WORKING GROUP / TAC MEETING
TAC AGENDA ITEM #2 TSS GRANTS AND DATA SURVEY
TSS GRANT TSS Fact Sheet SGMA Monitoring well Fact Sheet GSA commitment to pursue monitoring well project Responses to date: OHWD
DATA REQUEST FORMS Basin Stakeholders Introductory letter Stakeholder Survey Data Request Form Basin Public Water Suppliers Introductory letter GSA Input Confidentiality clause GSA contact info
BASIN STAKEHOLDER DATA REQUESTS (PART 1: STAKEHOLDER SURVEY) Requests general information from Basin landowners and stakeholders ➢ Contact info and general location ➢ Stakeholder characteristics (Agricultural, domestic, municipal, tribal, environmental, etc.) ➢ Familiarity with SGMA and groundwater management issues ➢ Opinions on land and water resources management ➢ Presence of wells on property and willingness to share data ➢ Recommendations to GSA To be distributed via GSA website, Board meetings, workshops Alternate distribution could include water bill inserts, local community organizations 5
BASIN STAKEHOLDER DATA REQUESTS (PART 2: DATA REQUEST FORMS) Requests specific quantitative data from Basin landowners / stakeholders ➢ Well construction details ➢ Pumping rates and cropping (as applicable) ➢ Water levels and water quality sampling (as available) Available at: http://cosumnes.waterforum.org Allows understanding of the historical and current status of groundwater in the Basin Actual data from the Basin are required, otherwise it’s just a guess! 6
BASIN PUBLIC WATER SUPPLIERS DATA REQUESTS Requests specific quantitative data from well operators or potable water suppliers within the Basin ➢ Exact well locations ➢ Well construction details ➢ Well construction logs, geologic logs or geophysical logs ➢ Pumping rates and cropping (as applicable) ➢ Water levels and water quality sampling (as available) ➢ Aquifer pumping test data and analyses/reports Requests will be sent from appropriate GSAs 7
GSA DATA REQUESTS Customized data requests will be sent to each GSA after the initial data compilation Since each GSA is an unique entity the data request will be focused on their specific areas, water supply, management plans, studies, land use, etc. 8
TAC AGENDA ITEM #3 GSP DEVELOPMENT SCHEDULE REVIEW
GSP DEVELOPMENT SCHEDULE PM Phase Project Management Phase 1 Phase 2 Phase 3 Phase 4 GSP Foundation Basin Characterization Sustainability GSP Preparation and Analysis Planning & Submittal 2018 2019 2020 2021 2022 T oday Apr 2019 Apr 2020 Oct 2018 Apr 2021 Jan 2022 Phase 1 • Data Management System (DMS) • Gather and Compile Data • Evaluate Numerical Groundwater Model Options • Stakeholder Communication and Engagement Plan (SCEP) 10
PHASE PM – PROJECT MANAGEMENT & ADMINISTRATION (October 2018 – February 2022) EKI - Provide a supporting role to GSAs - provide any required, Task 1: Proposition 1 Grant Sacramento County to satisfy Prop 1 GSA-specific materials to the Management, Administration, and grant administration and reporting County for Prop 1 reporting Reporting requirements purposes EKI - Conduct project management Task 2: Project Management efforts: Project budgets, project schedules, records management, contract compliance Task 3: Quality Assurance/Quality EKI – prepare a QA/QC Plan Control 11
PHASE 1 – GSP FOUNDATION (October 2018 – April 2019) Working Group – Review and EKI - Develop options for DMS selection Task 4: Select or Design Data and/or development and prepare provide feedback on TM #1; Management System (DMS) associated work products (TM #1- Data Select a DMS Management System Evaluation and Selection) GSAs – Compile and provide local EKI - Provide technical support Task 5: Gather Available Data and required to populate and manage the and Basin-specific data to be included Compile into DMS in the Basin DMS Basin DMS Task 6: Compile Information on EKI - P rovide technical support GSAs - Respond to data requests required to compile information on the regarding information required in the the Plan Area and Basin Plan Area and Basin Management Plan Area Management Activities Activities 12
PHASE 1 – GSP FOUNDATION (October 2018 – April 2019) GSAs – Identify local data gaps and EKI - Conduct Basin-wide data gaps collect appropriate information for Task 7: Conduct Data Gaps assessment and prepare associated Technical Support Services Grant Assessment work products (Draft TM #2 – Data application Compilation and Data Gaps Assessment) Working Group – Review and provide feedback on TM #2 EKI - C onduct the evaluation of numerical groundwater model options Working Group – Review and provide Task 8: Evaluate Numerical and prepare associated work products feedback on TM #3; Select modeling Groundwater Model Options (Draft TM #3 – Numerical Groundwater approach Model Evaluations and Recommendations) EKI - Provide limited technical support Working Group - Review and provide Task 9: Refine Stakeholder to review and provide feedback on the input to Basin-wide SCEP to align with Communication and Engagement SCEP and other associated work local outreach goals and objectives products developed by the Water Forum Plan and Consensus Building Institute (CBI). 13
PHASE 1 – GSP FOUNDATION (October 2018 – April 2019) EKI – Provide limited support to the Water Working Group/GSAs – Begin to Forum and CBI to conduct preliminary implement the SCEP within local Task 10: Conduct Stakeholder stakeholder engagement-related activities, jurisdictions (meetings, stakeholder Engagement Related to the GSP including: Preparation of one stakeholder survey, public notices, etc.) Foundation Phase workshop presentation, attendance at one stakeholder workshop EKI – Provide technical support for Phase 1 Working Group - Attend regularly intrabasin and interbasin coordination efforts scheduled Working Group/TAC through attendance at regular Working meetings to provide input on Task 11: Participate in Intrabasin Group/TAC meetings and preparation of matters associated with GSP & Interbasin Coordination Efforts associated materials, attendance at regular development SGMA meetings in neighboring subbasins (up to one per month), and through as needed as GSA-specific outreach 14
REMAINING PHASES (April 2019 – April 2020) (April 2020 – April 2021) (April 2021 – February 2022) Phase 3: Phase 2: Basin Phase 4: GSP Sustainability Characterization Preparation and Planning and Analysis Submittal • Focuses on technical • Focuses on planning • Preparation of the GSP analysis of Basin for the sustainable and associated conditions. management of the deliverables for use by • Hydrogeologic basin Basin GSAs in adopting • Sustainability Criteria conceptual model the GSP, with • Groundwater • Monitoring subsequent submittal to conditions DWR • Projects & • Water Budget Management Actions 15
TAC AGENDA ITEM #4 GROUNDWATER MODELING
OBJECTIFIES FOR MODEL SELECTION Support GSP development Support adaptive management through GSP implementation Coordinate with other regional planning efforts, current and future GSP development on ESJ Subbasin GSP development in other Sac County basins Regional planning efforts by SAFCA and others
MODEL CONSIDERATIONS - COSUMNES GSP 1. Support water budget calculations (past, current, and future). Proportional contribution of Cosumnes River recharge to South American and Cosumnes i. subbasins Proportional contribution of Dry Creek and Mokelumne River recharge to Cosumnes and ii. ESJ subbasins iii. Subsurface flows across subbasin boundaries 2. Project future hydrologic conditions: Groundwater levels i. Streamflow depletions ii. iii. Land subsidence potential
MODEL CONSIDERATIONS - COSUMNES GSP Calculate the groundwater storage response to potential management actions, 3. projects, and climate change Assist with development of Sustainable Management Criteria 4. Prioritize data gaps and refine monitoring network over time 5.
PRACTICAL CHARACTERISTICS FOR NUMERICAL MODEL 1. Model mesh and simulation period (appropriate spatial and temporal resolution) 2. Reliable and physically based boundaries 3. Physical processes accurately represented 4. Ease of use: modifications, refinement, and transparency of input and output dynamics 5. Cost (as-is, adaptation, new) 6. Effectiveness for its purpose: water budget calculations and sustainability planning
AVAILABLE MODELING OPTIONS Existing ESJ ( ) “AS - IS” Updated SacIWRM Model SVSim C2Vsim-FG CVHM New
AVAILABLE EXISTING MODELS SacIWRM SVSim C2VSim-FG CVHM
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