Groundwater Sustainability Plan Outline UMBRELLA Submitted to: Kern Groundwater Authority

Submitted by: GEI Consultants, Inc. April 5, 2017 <Name, Ph.D., P.E.> <Title>

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Table of Contents

Executive Summary vii

1. Introduction 1 1.1 General Information 1

1.1.1 Purpose of GSP 1 1.2 Agency Information 1

1.2.1 KGA 1 1.2.2 Chapter GSP Agencies 1

1.3 GSP Implementation Costs 1 1.3.1 Costs Generated by GSP Implementation 1 1.3.2 GSP Implementation Funding 1

1.4 Description of Plan Area 1 1.4.1 Geographic Areas Covered 1 1.4.2 Plan Area Setting 1 1.4.3 General Plans in Plan Area 1 1.4.4 Plan Elements from CWC Section 10727.4 1

1.5 Notice and Communication 1 1.5.1 Participating Agencies 1 1.5.2 Beneficial uses and users 1 1.5.3 Public Meetings 1 1.5.4 Comments Received 1

1.6 GSP Organization 1

2. Basin Setting 2 2.1 Hydrogeologic Conceptual Model 2

2.1.1 Regional Geologic and Structural Setting 2 2.1.2 Geologic Features 2 2.1.3 Lateral Boundaries and Bottom of Basin 2 2.1.4 Principle Aquifers and Aquitards 2 2.1.5 Physical Characteristics 2

2.2 Groundwater Conditions 2 2.2.1 Description of Current and Historical Conditions 2 2.2.2 Groundwater Trends 2

2.2.2.1 Elevation and flow directions, 2 2.2.2.2 Lateral/vertical gradients 2 2.2.2.3 Regional patterns 2 2.2.2.4 Change in Storage 2

2.2.3 Seawater intrusion 2 2.2.4 Groundwater Quality 2

2.2.4.1 Known sites and plumes 2 2.2.5 Land subsidence 2

2.2.5.1 Rates and Locations 2

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2.2.6 Interconnected Surface Water Systems 2 2.2.6.1 Depletions. 2

2.2.7 Groundwater Dependent Ecosystems 2 2.3 Water Budget 3

2.3.1 Numerical Model Components 3 2.3.1.1 Current Conditions 3 2.3.1.2 Historical Information 3 2.3.1.3 Projected Water Budgets 3

2.3.2 Results of Water Budget Analysis 3 2.3.2.1 Surface Water 3 2.3.2.2 Inflow to the groundwater system 3 2.3.2.3 Outflows from the groundwater system 3 2.3.2.4 Water year type 3 2.3.2.5 Sustainable yield 3

2.3.3 Water Budget Allocation 3 2.4 Existing/Ongoing Water Resources Programs/Policies 3 2.5 Existing Monitoring 3

2.5.1 Current programs 3 2.5.1.1 Groundwater Level Monitoring (Combine existing programs) 3 2.5.1.2 Groundwater Quality Monitoring (Combine existing

programs) 3 2.5.1.3 Subsidence Monitoring (Combine existing programs) 3 2.5.1.4 Surface Water Monitoring 3

2.6 Management Areas 3 2.6.1 Management Area 1 (Repeat for Each) 3

2.6.1.1 Reason for Creation 3 2.6.1.2 Management Area Conditions 3 2.6.1.3 Minimum Thresholds and Measurable Objectives

Differentiation 4 2.6.1.4 Monitoring Differentiation 4

2.6.2 Summary of Management Areas (Both KGA and Chapter) 4

3. Sustainability Goal and Undesirable Results 5 3.1 Sustainability Goal 5 3.2 Undesirable Results Description Narrative 5

3.2.1 Groundwater Levels 5 3.2.2 Groundwater Storage 5 3.2.3 Seawater Intrusion 5 3.2.4 Degraded Water Quality 5 3.2.5 Subsidence 5 3.2.6 Depletions of interconnected surface water 5

3.3 Summary of Preliminary Analysis of Undesirable Results from Chapters 5

4. Monitoring Networks 6 4.1 Monitoring Network Objectives 6

4.1.1 Temporal Trends: 6

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4.2 Monitoring Rationales 6 4.2.1 Management Areas 6 4.2.2 Monitoring Frequency 6 4.2.3 Spatial Density 6 4.2.4 Monitoring Protocols 6

4.3 Summary and Compilation of Chapter Monitoring Networks 6 4.3.1 Chronic Lowering of Groundwater Levels 6 4.3.2 Reduction of Groundwater Storage 6 4.3.3 Seawater Intrusion 6 4.3.4 Degraded Water Quality 6 4.3.5 Subsidence 6 4.3.6 Depletions of Interconnected Surface Water 6

4.4 Monitoring Network Improvement Plan (repeat for each SI) 6 4.4.1 Data Gaps 6 4.4.2 Assessment of Network Function 6 4.4.3 Plan to fill data gaps 6

5. Minimum Thresholds, Measurable Objectives, and Interim Milestones 7 5.1 Representative Thresholds (If Used) 7 5.2 Summary and Compilation of Chapter Thresholds 7

5.2.1 Chronic Lowering of Groundwater Levels 7 5.2.2 Reduction of Groundwater Storage 7 5.2.3 Seawater Intrusion 7 5.2.4 Degraded Water Quality 7 5.2.5 Subsidence 7 5.2.6 Depletions of Interconnected Surface Water 7

5.3 Potential Effects beyond GSP Area 7

6. Water Supply Accounting 8 6.1 Water Accounting Framework 8

6.1.1 “Native” Sustainable Yield 8 6.1.2 “Other” Sustainable Yield 8

6.2 Allocation Strategy 8 6.2.1 Management Areas 8

7. Consideration of SI’s and Thresholds Projects, Management Actions and Adaptive Management 9 7.1 Sustainability Target 9 7.2 Water Accounting Framework 9 7.3 Delineation of Analysis Components 9

7.3.1 Public Notice and Outreach Process 9 7.3.2 Permitting and Regulatory Process 9 7.3.3 Benefits 9 7.3.4 Source and Reliability of Water 9 7.3.5 Legal Authority Required 9 7.3.6 Costs and Funding 9

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7.4 Regional Projects planned as part of GSP that will be implemented regardless of conditions 9 7.4.1 Project 1 Description (Repeat for each project) 9

7.4.1.1 Public Notice and Outreach Process 9 7.4.1.2 Permitting and Regulatory Process 9 7.4.1.3 Benefits 9 7.4.1.4 Source and Reliability of Water 9 7.4.1.5 Legal Authority Required 9 7.4.1.6 Costs and Funding 9 7.4.1.7 CEQA/NEPA Considerations 9

7.5 Regional Management Actions planned as part of GSP that will be implemented regardless of conditions 10 7.5.1 Management Action 1 Description (Repeat for each) 10

7.5.1.1 Public Notice and Outreach Process 10 7.5.1.2 Permitting and Regulatory Process 10 7.5.1.3 Benefits 10 7.5.1.4 Source and Reliability of Water 10 7.5.1.5 Legal Authority Required 10 7.5.1.6 Costs and Funding 10 7.5.1.7 CEQA/NEPA Considerations 10

7.6 Regional Adaptive Management Actions planned as part of GSP 10 7.6.1 Adaptive Management 1 Description (Repeat for each) 10

7.6.1.1 Public Notice and Outreach Process 10 7.6.1.2 Permitting and Regulatory Process 10 7.6.1.3 Benefits 10 7.6.1.4 Source and Reliability of Water 10 7.6.1.5 Legal Authority Required 10 7.6.1.6 Costs and Funding 10 7.6.1.7 CEQA/NEPA Considerations 10

7.7 Summary 10 7.7.1 Table of Projects, Management Actions, and Adaptive Management

10 7.7.2 How Actions Achieve Sustainability in Basin 10

8. GSP Reporting 11 8.1 Annual Reports 11

8.1.1 General information 11 8.1.1.1 executive summary 11 8.1.1.2 location 11

8.1.2 Basin Conditions 11 8.1.2.1 Groundwater Elevation 11 8.1.2.2 Groundwater extraction 11 8.1.2.3 Surface Water 11 8.1.2.4 Total Water Use 11 8.1.2.5 Change in GW Storage 11

8.1.3 Description of Plan Implementation Progress 11

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8.1.3.1 Interim milestones 11 8.1.3.2 Implementation of projects 11 8.1.3.3 Implementation of Management actions 11 8.1.3.4 Implementation of Adaptive management actions 11

8.2 5 Year Evaluation Report 11 8.2.1 Sustainability Evaluation 11

8.2.1.1 Comparison of conditions for each sustainability indicator relative to measurable objectives, interim milestones and minimum thresholds 11

8.2.2 Threshold and Monitoring Network Revisions 11 8.2.3 Plan Implementation Progress 11

8.2.3.1 Interim milestones 11 8.2.3.2 Implementation of projects 12 8.2.3.3 Implementation of Management actions 12 8.2.3.4 Implementation of Adaptive management actions 12

8.2.4 Reconsideration of GSP elements 12 8.2.4.1 Basin Setting 12 8.2.4.2 Management Areas 12 8.2.4.3 Undesirable Results Narrative 12 8.2.4.4 Measurable objectives, interim milestones and minimum

thresholds 12 8.2.5 Monitoring Network description 12

8.2.5.1 Data gaps if present 12 8.2.5.2 Assessment of network function, and actions to improve if

needed 12 8.2.5.3 Plan to fill data gaps 12

8.2.6 New Information 12 8.2.7 Legal or Enforcement Actions 12 8.2.8 Plan Amendments 12 8.2.9 Coordination 12

Tables 1. 2.

Figures 1. 2.

Appendices A. B.

AUTHOR INITIALS:JA

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Document1

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Executive Summary

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1. Introduction

1.1 General Information

1.1.1 Purpose of GSP

1.2 Agency Information

1.2.1 KGA

1.2.2 Chapter GSP Agencies

1.3 GSP Implementation Costs

1.3.1 Costs Generated by GSP Implementation

1.3.2 GSP Implementation Funding

1.4 Description of Plan Area

1.4.1 Geographic Areas Covered

1.4.2 Plan Area Setting

1.4.3 General Plans in Plan Area

1.4.4 Plan Elements from CWC Section 10727.4

1.5 Notice and Communication

1.5.1 Participating Agencies

1.5.2 Beneficial uses and users

1.5.3 Public Meetings

1.5.4 Comments Received

1.6 GSP Organization

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2. Basin Setting

2.1 Hydrogeologic Conceptual Model

2.1.1 Regional Geologic and Structural Setting

2.1.2 Geologic Features

2.1.3 Lateral Boundaries and Bottom of Basin

2.1.4 Principle Aquifers and Aquitards

2.1.5 Physical Characteristics

2.2 Groundwater Conditions

2.2.1 Description of Current and Historical Conditions

2.2.2 Groundwater Trends

2.2.2.1 Elevation and flow directions,

2.2.2.2 Lateral/vertical gradients

2.2.2.3 Regional patterns

2.2.2.4 Change in Storage

2.2.3 Seawater intrusion

2.2.4 Groundwater Quality

2.2.4.1 Known sites and plumes

2.2.5 Land subsidence

2.2.5.1 Rates and Locations

2.2.6 Interconnected Surface Water Systems

2.2.6.1 Depletions.

2.2.7 Groundwater Dependent Ecosystems

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2.3 Water Budget

2.3.1 Numerical Model Components

2.3.1.1 Current Conditions

2.3.1.2 Historical Information

2.3.1.3 Projected Water Budgets

2.3.2 Results of Water Budget Analysis

2.3.2.1 Surface Water

2.3.2.2 Inflow to the groundwater system

2.3.2.3 Outflows from the groundwater system

2.3.2.4 Water year type

2.3.2.5 Sustainable yield

2.3.3 Water Budget Allocation

2.4 Existing/Ongoing Water Resources Programs/Policies

2.5 Existing Monitoring

2.5.1 Current programs

2.5.1.1 Groundwater Level Monitoring (Combine existing programs)

2.5.1.2 Groundwater Quality Monitoring (Combine existing programs)

2.5.1.3 Subsidence Monitoring (Combine existing programs)

2.5.1.4 Surface Water Monitoring

2.6 Management Areas

2.6.1 Management Area 1 (Repeat for Each)

2.6.1.1 Reason for Creation

2.6.1.2 Management Area Conditions

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2.6.1.3 Minimum Thresholds and Measurable Objectives Differentiation

2.6.1.4 Monitoring Differentiation

2.6.2 Summary of Management Areas (Both KGA and Chapter)

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3. Sustainability Goal and Undesirable Results

3.1 Sustainability Goal

3.2 Undesirable Results Description Narrative

3.2.1 Groundwater Levels

3.2.2 Groundwater Storage

3.2.3 Seawater Intrusion

3.2.4 Degraded Water Quality

3.2.5 Subsidence

3.2.6 Depletions of interconnected surface water

3.3 Summary of Preliminary Analysis of Undesirable Results from Chapters

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4. Monitoring Networks

4.1 Monitoring Network Objectives

4.1.1 Temporal Trends:

4.2 Monitoring Rationales

4.2.1 Management Areas

4.2.2 Monitoring Frequency

4.2.3 Spatial Density

4.2.4 Monitoring Protocols

4.3 Summary and Compilation of Chapter Monitoring Networks

4.3.1 Chronic Lowering of Groundwater Levels

4.3.2 Reduction of Groundwater Storage

4.3.3 Seawater Intrusion

4.3.4 Degraded Water Quality

4.3.5 Subsidence

4.3.6 Depletions of Interconnected Surface Water

4.4 Monitoring Network Improvement Plan (repeat for each SI)

4.4.1 Data Gaps

4.4.2 Assessment of Network Function

4.4.3 Plan to fill data gaps

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5. Minimum Thresholds, Measurable Objectives, and Interim Milestones

5.1 Representative Thresholds (If Used)

5.2 Summary and Compilation of Chapter Thresholds

5.2.1 Chronic Lowering of Groundwater Levels

5.2.2 Reduction of Groundwater Storage

5.2.3 Seawater Intrusion

5.2.4 Degraded Water Quality

5.2.5 Subsidence

5.2.6 Depletions of Interconnected Surface Water

5.3 Potential Effects beyond GSP Area

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6. Water Supply Accounting

6.1 Water Accounting Framework

6.1.1 “Native” Sustainable Yield

6.1.2 “Other” Sustainable Yield

6.2 Allocation Strategy

6.2.1 Management Areas

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7. Consideration of SI’s and Thresholds Projects, Management Actions and Adaptive Management

7.1 Sustainability Target

7.2 Water Accounting Framework

7.3 Delineation of Analysis Components

7.3.1 Public Notice and Outreach Process

7.3.2 Permitting and Regulatory Process

7.3.3 Benefits

7.3.4 Source and Reliability of Water

7.3.5 Legal Authority Required

7.3.6 Costs and Funding

7.4 Regional Projects planned as part of GSP that will be implemented regardless of conditions

7.4.1 Project 1 Description (Repeat for each project)

7.4.1.1 Public Notice and Outreach Process

7.4.1.2 Permitting and Regulatory Process

7.4.1.3 Benefits

7.4.1.4 Source and Reliability of Water

7.4.1.5 Legal Authority Required

7.4.1.6 Costs and Funding

7.4.1.7 CEQA/NEPA Considerations

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7.5 Regional Management Actions planned as part of GSP that will be implemented regardless of conditions

7.5.1 Management Action 1 Description (Repeat for each)

7.5.1.1 Public Notice and Outreach Process

7.5.1.2 Permitting and Regulatory Process

7.5.1.3 Benefits

7.5.1.4 Source and Reliability of Water

7.5.1.5 Legal Authority Required

7.5.1.6 Costs and Funding

7.5.1.7 CEQA/NEPA Considerations

7.6 Regional Adaptive Management Actions planned as part of GSP

7.6.1 Adaptive Management 1 Description (Repeat for each)

7.6.1.1 Public Notice and Outreach Process

7.6.1.2 Permitting and Regulatory Process

7.6.1.3 Benefits

7.6.1.4 Source and Reliability of Water

7.6.1.5 Legal Authority Required

7.6.1.6 Costs and Funding

7.6.1.7 CEQA/NEPA Considerations

7.7 Summary

7.7.1 Table of Projects, Management Actions, and Adaptive Management

7.7.2 How Actions Achieve Sustainability in Basin

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8. GSP Reporting

8.1 Annual Reports

8.1.1 General information

8.1.1.1 executive summary

8.1.1.2 location

8.1.2 Basin Conditions

8.1.2.1 Groundwater Elevation

8.1.2.2 Groundwater extraction

8.1.2.3 Surface Water

8.1.2.4 Total Water Use

8.1.2.5 Change in GW Storage

8.1.3 Description of Plan Implementation Progress

8.1.3.1 Interim milestones

8.1.3.2 Implementation of projects

8.1.3.3 Implementation of Management actions

8.1.3.4 Implementation of Adaptive management actions

8.2 5 Year Evaluation Report

8.2.1 Sustainability Evaluation

8.2.1.1 Comparison of conditions for each sustainability indicator relative to measurable objectives, interim milestones and minimum thresholds

8.2.2 Threshold and Monitoring Network Revisions

8.2.3 Plan Implementation Progress

8.2.3.1 Interim milestones

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8.2.3.2 Implementation of projects

8.2.3.3 Implementation of Management actions

8.2.3.4 Implementation of Adaptive management actions

8.2.4 Reconsideration of GSP elements

8.2.4.1 Basin Setting

8.2.4.2 Management Areas

8.2.4.3 Undesirable Results Narrative

8.2.4.4 Measurable objectives, interim milestones and minimum thresholds

8.2.5 Monitoring Network description

8.2.5.1 Data gaps if present

8.2.5.2 Assessment of network function, and actions to improve if needed

8.2.5.3 Plan to fill data gaps

8.2.6 New Information

8.2.7 Legal or Enforcement Actions

8.2.8 Plan Amendments

8.2.9 Coordination

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Appendix A

Copies of Reference documents used

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Appendix B

Coordination Agreement

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Appendix C

Monitoring Protocols, standards and procedures