OCWD Management Area
Figure 13-1: Total Vertical Ground Surface Displacement from June 2015 to July 2020
13.1 DEFINITION OF SIGNIFICANT AND UNREASONABLE LAND SUBSIDENCE THAT SUBSTANTIALLY INTERFERES WITH SURFACE USES As stated above, data indicates that there is no inelastic land subsidence within the OCWD Management Area due to changes in groundwater elevation or groundwater storage levels. Land subsidence would be considered to be significant and unreasonable if ground surface elevation changes are determined to be inelastic over a significant period of time, these elevation changes are attributed to declines in groundwater storage, and these changes are likely to significantly interfere with surface uses.
BASIN 8-1 ALTERNATIVE 2022 UPDATE Sustainable Management: Land Subsidence 13-3
Appendix F - 194
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