South East Management Area
“active” on Figure 3 -1 because IRWD plans to put well LF-2 back into production once it is rehabilitated and treatment facilities are constructed. In 2020, well LF-5 was destroyed to make way for a new planned pump station on the site. Well LF- 5 was previously used to supplement water in IRWD’s recycled water system. However, due to continual poor water production and high salinity, IRWD ceased the operation of well LF-5, and in February 2020, IRWD destroyed the well. At the site, IRWD plans to construct a new recycled water pump station. Although construction and operation of a new well is not a currently planned project, space is being allocated on the existing site adjacent to the pump station to accommodate a potential new well in the future.
3.2.1 Groundwater Levels
The range of observed groundwater levels in the South East Management Area from 2016 to 2021 are summarized in Figure 3-2. It is noted that no groundwater level data exists in the ETWD and City of Orange portions of the South East Management Area. Historic and estimated groundwater levels from 1991 to 2021 for IRWD’s Lake Forest wells are shown in Figure 3-2. Historic groundwater level data is available from 1991 through 2001, after which there is no data available until 2015. More recent groundwater level data is available from 2015 to present. M onthly groundwater levels from IRWD’s Lake Forest wells for 2020 to 2021 are shown in Figure 3-3. In all IRWD wells, groundwater levels are the same or higher in 2021 than they were in 2017. With the exception of LF-1, groundwater levels show a rising trend, indicating that recharge to the area exceeds the discharge. Well LF-1 shows a stable groundwater level trend.
BASIN 8-1 ALTERNATIVE 2022 UPDATE
3-9 3 -3 Appendix F - 212
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