Saturday, Mar. 25, 2023
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Madera Subbasin GSP

The Madera Subbasin exists within the larger San Joaquin Valley Groundwater basin described in the California Department of Water Resources Bulletin 118. The County of Madera is the exclusive GSA for the portion of the Madera Subbasin in the undistracted land of the County. The Advisory Committee advised the Madera County GSAs for the Madera Subbasin. There are additional multiple GSAs within the Madera Subbasin, including the Madera County GSA, City of Madera GSA, Madera Irrigation District, Root Creek Water District, Madera Water District, Gravelly Ford Water District, New Stone Water District. If you’re not sure what GSA you are in for the Madera Subbasin, use this interactive map from Madera Irrigation District.

Groundwater Sustainability Plan and Annual Reports

Madera GSP Annual Report 2022 Final

Updated Version: Annual Report and Appendices– due April 2021

Annual Report and Appendices – due April 2021

Annual Report and Appendices – due April 2020

Revised GSP with feedback from public (red line version) (clean version(public comments)

Final GSP and Appendices:

Madera GSP Final Report
List of Comments
Chapter 2 Figures
Chapter 3 Figures
Appendix 1 A-I
Appendix 2 A-B
Appendix 2 C.a
Appendix 2 C.b-C.e
Appendix 2 D
Appendix 2 E.a
Appendix 2 E.b
Appendix 2 E.c
Appendix 2 F
Appendix 3 A-F
Appendix 4 A
Appendix 5
Appendix 6 A-D
Appendix 6 D Groundwater Model Report Appendices
Appendix 6 D Groundwater Report Figures

2023 Revised Joint GSP and Appendices:

Madera Subbasin GSP Draft Tracked Changes 3-16-2023
ALL Figures Referenced in ISW Section 3/2/2023
Chapter 2 Figures 2023
Chapter 3 Figures 2023
Appendix 1J Revised First Amendment to the Madera Subbasin Coordination Agreement 3-20-2023
Appendix 2G Madera Subbasin Domestic Well Inventory TM April 2022
Appendix 3A DRAFT Madera RMS WY 2021 Update 1-18-2023 REDUCED
Appendix 3D Economic Analysis and Framework for Potential Domestic Well Mitigation Program
Appendix 3E DRAFT Madera Subbasin Domestic Well Mitigation Program MOU 3-5-2023
Appendix 3G Madera Infrastructure Assessment Draft 2/22/2023
Appendix 3H Subsidence Workplan 3/20/2023
Appendix 3I ISW Workplan 3/20/2023
Appendix 5A Revised DRAFT Madera Subbasin Update Timeline 2-9-2023

Other GSPs within Madera County:

Gravelly Ford
Root Creek
New Stone

Madera Subbasin Coordination Work Group (2021 +)

County GSA: Brett Frazier and Stephanie Anagnoson (alternate)
City GSA: Keith Helmuth and Keith Helmuth’s designee (alternate)
Madera Irrigation District: MID Groundwater Committee Chair and General Manager of MID or his designee (alternate)
Root Creek Water District: Julia Berry and Brian Ehlers (alternate)
Gravelly Ford Water District: Don Roberts and Garth Peccenino (alternate)
Madera Water District: Phil Janzen and Kevin Herman (alternate)
New Stone Water District: ? and ?

2021 Meeting Minutes

Madera Subbasin Joint GSP Coordination Committee (2018-2020)

County: Brett Frazier and Greg Young
Madera Irrigation District: Dave Loquaci and Dina Nolan
Madera Water District: Phil Janzen and Eric Abrahamsen
City of Madera: Derek Robinson and Keith Helmuth

2019 Meeting Dates for the Madera Subbasin Joint  GSP

February 7, 2019 Madera & Chowchilla Subbasin Joint Meeting, 5:30 – 7:30 p.m. Frank Bergon Senior Center Agenda. Flyer in English. Flyer in Spanish. Minutes
March 21, 2019 Madera Subbasin Coordination Meeting, 3:00 – 5:00 p.m. Frank Bergon Senior Center. SWRCB Presentation. PresentationAgenda. Minutes
April 25, 2019 Madera Subbasin, Undesirable Results Public Technical Workshop, 4:00 – 6:00 p.m. Frank Bergon Senior Center. Agenda. Presentation. Minutes.
May 29, 2019 Madera Subbasin, GSP, Chapters 1, 2 Public Technical Workshop, 2:00 – 4:00 p.m. Madera County Board Chambers. Agenda. Presentation. Minutes.
August 7, 2019 Madera Subbasin GSP, Madera County Board of Supervisors Chambers, 2:00 p.m. – 4:00 p.m., Agenda. Presentation. Minutes
October 22, 2019 Madera Subbasin GSP, Madera County Board of Supervisors Chambers, 6 p.m. Presentation.  Agenda. 
December 2, 2019 Madera Subbasin GSP, Madera County Board of Supervisors, 4 p.m. PresentationAgenda.

**Please see event calendar for all previous year meeting dates and corresponding documents**


Madera Subbasin Data Collection and Analysis w/ Tables and Figures

Madera Subbasin Data Collection and Analysis Appendices

Madera Subbasin Preliminary Water Budget Analysis