Overview
BASIN 8-1 ALTERNATIVE
OVERVIEW The Sustainable Groundwater Management Act (SGMA) requires all high- and medium-priority basins, as designated by the California Department of Water Resources (DWR), be sustainably managed. DWR designated the Coastal Plain of Orange County Groundwater Basin ( “ Basin 8- 1 ” or “Basin” ) as a medium-priority basin, primarily due to heavy reliance on the B asin’s groundwater as a source of water supply. The agencies within Basin 8-1 collaborated to prepare and submit an Alternative to a Groundwater Sustainability Plan (GSP) on December 22, 2016. Within this document, this Alternative to a GSP will be referred to herein as the “ Basin 8-1 Alternative ” or “Alternative” . In accordance with Water Code §10733.6(b)(3), the Alternative presented an analysis of basin conditions that demonstrated that Basin 8-1 had operated within its sustainable yield over a period of at least 10 years. On July 17, 2019, DWR determined that the Alternative satisfied SGMA objectives and was therefore approved. Approved alternatives are required to submit annual reports to DWR on April 1 of each year, and to resubmit the alternative by January 1 every five years. Annual reports were submitted to DWR as follows:
• Water Year 2016-17 – March 29, 2018 • Water Year 2017-18 – March 29, 2019 • Water Year 2018-19 – March 30, 2020 • Water Year 2019-20 – March 30, 2021
This document represents the first five-year update, which is due January 1, 2022.
This update has been jointly prepared by the Orange County Water District (OCWD), Irvine Ranch Water District (IRWD); and the City of La Habra Groundwater Sustainability Agency (collec tively the “Submitting Agencies”); pursuant to this Alternative, the Submitting Agencies will ensure the entire Basin 8-1 continues to be sustainably managed and data reported as required by SGMA. Pursuant to Water Code §10733.6(b)(3), the Basin 8-1 Alternative has been prepared by or under the direction of a professional geologist or professional engineer. For purposes of this report, the Basin 8-1 Alternative approved by DWR on July 17, 2019, is referred to as the 2017 Alternative. The first five-year update will be referred to as the 2022 Update. The 2017 Alternative was a comprehensive document showing that Basin 8-1 had been managed sustainably for more than 10 years. For the 2022 Update, the focus is on documenting that the basin has continued to be operated sustainably during the five years since the 2017 Alternative was submitted and to present any new information. As such, background information, such as Basin Hydrogeology, and other sections with no new information are not repeated in the 2022 Update.
BASIN 8-1 ALTERNATIVE: 2022 UPDATE
Overview
Appendix F - 4
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