Tule Subbasin Sustainable Groundwater Management Act October 16, 2019
KEY SGMA TERMS SGMA : Sustainable Groundwater Management Act – Described in the Water Code – A Law of the State of California GSA : Groundwater Sustainability Agency – Overarching body responsible for implementing SGMA – Defined by boundaries GSP : Groundwater Sustainability Plan – Each GSA adopts a GSP – GSP describes how the GSA will meet the requirements of the SGMA
OVERVIEW 1. Tule Subbasin Overview 2. Tule Subbasin Coordination Agreement 3. Overview of Tule Subbasin Groundwater Sustainability Plans • Basin Setting • Monitoring Plan • Sustainable Management Criteria • Projects and Management Criteria 4. Subbasin Grants 5. Budget, Financials Report & Funding Status
TULE SUBBASIN OVERVIEW Lower Tule River ID GSA (LTRID GSA): 104,525 acres LTRID GSA Eastern Tule GSA (ETGSA): 161,511 acres Pixley ID GSA: 69,803 acres Delano Earlimart ID GSA (DEID GSA): 64,134 acres PIXLEY ID GSA ETGSA Tri-County Water Authority GSA: 61,575 acres ALPAUGH GSA Alpaugh GSA: 14,437 acres DEID GSA Tulare County GSA: 2,408 acres TRI-COUNTY WATER AUTHORITY GSA TOTAL Area: 477,000 ac.
Tule Subbasin Coordination Agreement • Required by SGMA when there are multiple GSA’s with multiple GSPs in one Basin. Components of the Draft Tule Subbasin Coordination Agreement: • Process for submitting, amending, and periodic evaluation of each GSP and annual reports • Tule Subbasin Basin Setting ( Attachment 2 ) • Coordinated Data and Methodologies • Sustainable Management Criteria • Tule Subbasin Monitoring Plan ( Attachment 1 )
OVERVIEW OF THE TULE SUBBASIN GSPs • Introduction • Basin Setting • Sustainable Management Criteria • Monitoring Networks & Monitoring Plan • Projects and Management Actions • Plan Implementation • References and Technical Studies
OVERVIEW OF THE TULE SUBBASIN GSPs Basin Setting • Hydrogeological Conceptual Model • Existing Groundwater Conditions • Water Budget Historical • Future • Sustainable Yield • • Management Areas
OVERVIEW OF THE TULE SUBBASIN GSPs Basin Setting Sustainable Yield The maximum quantity of water, calculated over a base period representative of long-term conditions in the basin and including any temporary surplus, that can be withdrawn annually from a groundwater supply without causing an undesirable result. SGMA Ch. 2; Sect. 10721(v) 130,000 acre-ft/yr of Groundwater Pumping
OVERVIEW OF THE TULE SUBBASIN GSPs MONITORING PLAN • Groundwater Levels: Depth to GW in Existing Wells or Monitoring Wells • Groundwater Storage: Calculated Volume based on GW Levels • Groundwater Quality: Utilize Water Quality Monitoring Data • Land Subsidence: Extensometer, InSAR Data, GPS Benchmarks
OVERVIEW OF THE TULE SUBBASIN GSPs Sustainable Management Criteria (23 CCR § 351) (q) Interim Milestones: Refers to a target value representing measurable groundwater conditions, in increments of five years, set be an Agency as part of a Plan. (s) Measurable Objectives: Refers to specific, quantifiable goals for maintenance or improvement of specified groundwater conditions that have been included in an adopted Plan to achieve the Sustainability Goal of the basin. (t) Minimum Threshold: Refers to a numeric value of each sustainability indicator used to define Undesirable Results. (23 CCR § 354.26) (a) Undesirable Results : Significant and Unreasonable effects for any of the sustainability indicators caused by groundwater conditions occurring throughout the basins. (23 CCR § 354.24) Sustainability Goal: Absence of Undesirable Results within the basin by 2040
OVERVIEW OF THE TULE SUBBASIN GSPs Sustainability Management Criteria SUSTAINABILITY GW ELEVATION GW STORAGE GW QUALITY LAND SUBSIDENCE INDICATOR Sustainable Management Criteria Unreasonable Lowering of groundwater elevation below the minimum threshold for two consecutive years at UNDESIRABLE RESULT greater than 50% of GSA Management Area RMS Sites, which results in significant impacts to groundwater supply Groundwater Elevations, as determined by measuring MEASUREMENT METHODOLOGY depth to groundwater at representative monitoring sites. MINIMUM Varies By GSA THRESHOLD MEASURABLE Varied By GSA OBJECTIVE INTERIM Varies By GSA MILESTONES
OVERVIEW OF THE TULE SUBBASIN GSPs Projects & Management Actions Gradual Ramp-Down Scenarios GSA Tri-County Water LTRID GSA Pixley ID GSA ETGSA DEID GSA Alpaugh GSA YEAR Authority GSA 2.0 acre-feet/acre over 90% of Historical 2.0 acre-feet/acre over Sustainable Yield 2020-2024 Pumping over No Change No Change Sustainable Yield Sustainable Yield Fallow 5,000 acres Fallow 880 acres 1.5 acre-feet/acre over 80% of Historical Sustainable Yield 1.5 acre-feet/acre over 2025-2029 Pumping over 10% Annual Reduction Sustainable Yield Sustainable Yield Fallow 5,000 acres in Historical Pumping Reduce Pumping over Sustainable Yield 10,000 acre-feet/year 1.0 acre-feet/acre over 30% of Historical Sustainable Yield 1.0 acre-feet/acre over 2030-2034 (Western Management Area) Pumping over Sustainable Yield Sustainable Yield Fallow 5,000 acres 0.5 acre-feet/acre over Sustainable Yield 0.5 acre-feet/acre over Sustainable 2035-2039 Sustainable Yield Fallow 5,000 acres Sustainable Sustainable Sustainable Sustainable Sustainable 2040+
Subbasin Grants DWR Prop 68 Grant Prop 1 Grant Technical Support Application Service (TSS) Tule Subbasin Tule Subbasin Basin Groundwater Flow Setting / Water Budgets Model Update Tule Subbasin Coordination Agreement Installation of Installation of Monitoring Monitoring Wells Features Tule Subbasin Monitoring Plan Tule Subbasin Data Installation of Monitoring Management System Features
Current Budget & Financials Administration/ Technical Work/ Grants Coordination Studies Annual Reports, Basin Fiscal Agent Meetings, and Administration Administration MOU Meetings Groundwater Flow Coordination Model Subbasin SGMA Grant Agreement, Technical Applications Monitoring Plan and Review, and Annual Implementation Reports Outreach Material/ Data management Website Budget Year operates from October 1, through September 30
Tule Subbasin GSPs Public Comment Public Hearing for GSA Link To GSP Period Ends Adoption LTRID GSA Dec. 19, 2019 Jan. 14, 2020 http://www.ltrid.org/sgma/#gsp Pixley ID GSA Dec. 20, 2019 Jan. 9, 2020 http://www.ltrid.org/sgma/#gsp ETGSA Dec. 16, 2019 Dec. 16, 2019 https://easterntulegsa.com/gsp/ DEID GSA Dec. 1, 2019 Jan. 2020 https://deid.org/gsa/ Tri-County Water Nov. 7, 2019 Dec. 18, 2019 https://tcwater.org/ Authority GSA Alpaugh GSA Jan.14, 2020 Jan. 2020 https://alpaughgsa.com/
Questions ?? Tule Subbasin Sustainable Groundwater Management Act https://tulesgma.com/
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