Temescal Basin
Groundwater
Sustainability
Plan
Melissa Estrada-Maravilla
January 5, 2022
Temescal
Basin
Medium Priority Basin
GSP due 1/31/2022
2 SGMA
Sustainable
Groundwater
Management Act
(SGMA) • September 16, 2014 • Law that established a new structure for sustainable
groundwater management
3 Temescal Basin
Groundwater Sustainability Agency
(Temescal GSA)
➝ City of Corona
➝ City of Norco
➝ Home Gardens County Water District
4 Stakeholder Engagement
Technical Advisory
Committee
[8 member agencies]
• April 19, 2020
• November 18, 2020
• February 17, 2021
• June 16, 2021
Public Workshops
• September 29, 2020
• March 2, 2021
• July 8, 2021
Community Leader
Meetings
• June 29, 2021
• July 1, 2021
[email protected]
5 Sustainability Indicators for Consideration
1. Groundwater Elevations
2. Groundwater Storage
3. Potential Subsidence
4. Groundwater quality
5. Seawater Intrusion – Not Applicable
6. Interconnected surface and groundwater
dependent ecosystems
6 Projects and Management Actions
Management Actions
• Data collection
• Data Storage
• Reporting of
Information
• Data Assessment
Projects – that are or will
be under development
• Shallow Monitoring
Well Installation
• Potable Reuse
Feasibility Study
• Mountain Runoff
Capture Feasibility
Study
7 Temescal GSP
Implementation
➝ 1st Annual Report –
due April 1, 2022
➝ Implementation of
projects and
management
actions
➝ Groundwater
website will remain
active and updated
frequently
8 QUESTIONS?
951-736-2479
[email protected]
www.CoronaCA.gov
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