Napa Valley groundwater pumping exceeds sustainable yield

“Napa County has work to do to get Napa Valley wine country groundwater supplies in balance for the long haul.

Groundwater beneath the valley floor is pumped mostly for agriculture, as well as for businesses and homes. Those supplies are crucial to the success of wine country and the local economy. Groundwater also feeds the Napa River and creeks during hot summer months, helping fish and aquatic life.

The 2021-22 year brought some red flags, which the groundwater report calls “undesirable results.” One is a reduction in groundwater storage. The other is a depletion of water in surface waterways that can be fed by groundwater.” [Read More]