Some property owners above Napa Valley’s 72-square-mile groundwater subbasin will see a new fee on their property tax bills in December. As part of the Napa Valley Subbasin Groundwater Sustainability Plan, Napa County mailed informational postcards this past week to subbasin property owners and groundwater users, encouraging them to review information about the groundwater fee that will range anywhere from $38 to $129 per acre per year. … Under California’s Sustainable Groundwater Management Act — a state law requiring local agencies to sustainably manage groundwater — the fee will fund water monitoring, reporting, planning and compliance, but not the actual use of the groundwater.

Other groundwater news:

• SJV Water (Bakersfield, Calif.): Desert groundwater agency seeks information on proposed AI data center
• Engineering News-Record: Tapping into Torrance’s brackish water plume​