Groundwater

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Table of Contents
Acronyms and Abbreviations...........................................................................................................................ii
Foreword..........................................................................................................................................................iii
Acknowledgments........................................................................................................................................... vi
Introduction ......................................................................................................................................................1
Groundwater Basins Subject to Critical Conditions of Overdraft.................................................................7
Background................................................................................................................................................7
Approach....................................................................................................................................................7
Time Period Selection.........................................................................................................................7
Groundwater-Level Trend Assessment.............................................................................................10
Adverse Impacts of Overdraft..........................................................................................................10
Results......................................................................................................................................................11
Preliminary Determination...............................................................................................................11
Draft and Final Determinations.......................................................................................................11
Groundwater Basins Subject to Critical Conditions of Overdraft
and Basin Boundary Modificastions...........................................................................................11
Groundwater Basin Boundary Modifications...............................................................................................17
Background..............................................................................................................................................17
Regulations Development................................................................................................................17
Approach..................................................................................................................................................18
Administrative Adjustments.............................................................................................................18
Groundwater Basin Boundary Modification Requests....................................................................19
Process Support Tools........................................................................................................................20
Groundwater Basin Boundary Modification Request Review........................................................21
Results......................................................................................................................................................21
Groundwater Basin Prioritization..................................................................................................................23
Background..............................................................................................................................................23
Groundwater Basin Prioritization under the Susutainable Groundwater Management Act......25
Initial Prioritization...........................................................................................................................25
Approach..................................................................................................................................................25
Bulletin 118 – Comprehensive Update 2020.................................................................................................27
Appendix A—Summary of 2016 Groundwater Basin Boundary Modification Requests............................29
Appendix B—Groundwater Basins and Subbasins (2016).............................................................................33
Working Toward Sustainability | vii