REVISED GROUNDWATER
SUSTAINABILITY PLAN
ADOPTION
Stockton City Council
July 26, 2022
Agenda Item No. 16.1
Basin Setting
•The Eastern San Joaquin
Groundwater Subbasin
(Subbasin) is one of 21 basins
identified by the California
Department of Water
Resources (DWR) as being in a
state of critical overdraft
•SGMA requires preparation of
a Groundwater Sustainability
Plan (GSP) to address
measures necessary to attain
sustainable conditions in the
Subbasin
Eastern San Joaquin Groundwater Authority
One GSP for 16
Separate Groundwater
Sustainability Agencies
Within the GWA
Sustainability Indicators
•Chronic Lowering of Groundwater Levels
•Reduction in Groundwater Storage
•Seawater Intrusion
•Degraded Water Quality
•Land Subsidence
•Depletion of Interconnected Surface
Water
Groundwater Levels
Groundwater Budget
•Projected Additional
Urban Conservation
or GW Offsets
Needed: 10%
(~14,000 AFY)
•Projected Ag
Conservation or GW
Offsets Needed 10%
(~ 64,000 AFY)
DWR Comments & Revised GSP
•TM 1: Undesirable Result Definition &
Project and Management Actions
•TM 2: Drinking Water & Shallow Wells
•TM 3: Groundwater Quality
Degradation in Areas where further
Groundwater Level Decline is Allowed
•TM 4: Land Subsidence
GSP Timeline
Revised GSP
Published on Eastern San
Joaquin Groundwater Authority
Website: esjgroundwater .org
Recommendation
Adopt the Revised GSP and authorize the
GWA to submit the Revised GSP to the
DWR.