Draft 2025 Urban Water Management Plan

South East Management Area

SUSTAINABLE MANAGEMENT

RELATED TO LAND SUBSIDENCE

Subsidence is not an issue for the South East Management Area given the following:

• Minimal groundwater development exists in the South East Management Area. • Groundwater levels are stable or rising and have been for at least 10 years. • Low risk of future groundwater level declines due to limited planned groundwater production. As discussed previously in Section 3, the Basin 8-1 area will continue to be monitored for changes in InSAR data (via OCWD and consultants) to evaluate ground surface fluctuations within the service area. If irreversible subsidence was found to occur in a localized area in relation to groundwater pumping patterns or groundwater storage conditions, the South East Management Area managers would coordinate with local officials to investigate and develop an approach to address the subsidence.

9 113 -1 Appendix F - 232

BASIN 8-1 ALTERNATIVE 2022 UPDATE

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