South East Management Area
SUSTAINABLE MANAGEMENT RELATED
TO GROUNDWATER LEVELS
9.1 HISTORY As shown on Figure 3-2 historical groundwater levels in the IRWD’s Lake Forest portion of the South East Management Area have shown stable or rising trends and are, in all cases, at the same level or higher than they were in 2017. Because future groundwater pumping in the South East Management Area is expected to be limited, groundwater levels are expected to remain relatively steady in the future. 9.2 MONITORING OF GROUNDWATER LEVELS Groundwater levels are currently monitored in the five wells located in IRWD’s Lake Forest portion of the South East Management Area on a monthly basis. This monitoring will continue into the future. 9.3 DEFINITION OF SIGNIFICANT AND UNREASONABLE LOWERING OF GROUNDWATER LEVELS Significant and unreasonable lowering of groundwater levels is defined as a long-term chronic lowering of groundwater levels, despite changes in precipitation patterns. No long-term reduction in groundwater levels in the South East Management Area is expected to occur. 9.4 DETERMINATION OF MINIMUM THRESHOLDS It is not possible to determine a minimum threshold at this time since no undesirable effects due to groundwater levels have occurred in the past and are not foreseen in the future. Nevertheless, the South East Management Area well monitoring program is expected to continue to monitor water levels and groundwater quality in the future. If water levels start to show a consistent, long-term decline and undesirable results are observed, action would be taken and minimum thresholds would be evaluated and established as appropriate.
BASIN 8-1 ALTERNATIVE 2022 UPDATE
9-25 9 -1 Appendix F - 228
Powered by FlippingBook