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North Fork Kings GSA to Conduct a Confined Aquifer Study

The North Fork Kings GSA is conducting a confined aquifer study within its boundaries. This study aims to estimate groundwater pumping from the confined aquifer beneath the Corcoran Clay to identify impacts on land subsidence and implement preventive measures for the Agency’s ability to maintain sustainable subsidence rates.

The confined aquifer study is a requirement for the North Fork Kings GSA to maintain its approved Groundwater Sustainability Plan (GSP) status with the State. The study is one of 12 corrective actions provided in August in the GSP approval letter from the California Department of Water Resources (DWR). Addressing the corrective actions is a priority, as having an approved GSP is needed to maintain local control over groundwater.

As part of the study, the North Fork Kings GSA will establish a well monitoring network to observe the confined aquifer’s response to pumping. The monitoring network will help identify and fill any data gaps and develop a better understanding of groundwater use and flow.

To support the study efforts, the North Fork Kings GSA is initiating a well registration program to gather data on well locations, depths, and perforated intervals. This information will help the North Fork Kings GSA understand the specific aquifers that wells are pumping from, particularly the extent of groundwater being pumped from the confined aquifer.

Landowner participation in well registration is key to the study’s successful completion over the next year. The North Fork Kings GSA asks all well owners to register their wells. Visit to get started now by joining the volunteer Early Access Group.

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