There are many new terms discussed at GSA meetings across the Counties of Kings, Fresno, and Tulare, and for those people not familiar with the jargon it can be difficult to follow along. So, would the GSA please provide definitions to a few key SGMA related terms as well sources for more information.


In addition to definitions provided herein, below are a few key definitions from the Water Code §10721:

Basin – means a groundwater basin or subbasin identified and defined in Bulletin 118 or as modified pursuant to Chapter 3 (commencing with Section 10722).
In-lieu Use – the use of surface water by persons that could otherwise extract groundwater in order to leave groundwater in the basin.
Planning and Implementation Horizon – means a 50-year time period over which a groundwater sustainability agency determines that plans and measures will be implemented in a basin to ensure that the basin is operated within its sustainable yield.
Sustainability Goal – the existence and implementation of one or more groundwater sustainability plans that achieve sustainable groundwater management by identifying and causing the implementation of measures targeted to ensure that the applicable basin is operated within it sustainable yield.
Sustainable Groundwater Management – the management and use of groundwater in a manner that can be maintained during the planning and implementation horizon without causing undesirable results.
Sustainable Yield – means the maximum quantity of water, calculated over a base period representative of long-term conditions in the basin and including any temporary surplus, that can be withdrawn annually from a groundwater supply without causing an undesirable result.
Water Year – means the period from October 1 through the following September 30, inclusive.

For additional information about key SGMA related definitions, please visit the websites linked below:
(1) California Water Code – Definitions
(2) SGMA Definitions from DWR

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