Napa Valley nightmare as experts warn wineries could run dry: Unsustainable'

Napa Valley is experiencing an unsustainable groundwater crisis. In 2025, the region pumped about 16,580 acre-feet of groundwater, exceeding the county’s sustainable limit by more than 1,500 acre-feet. That year also brought below-average rainfall, totaling about 21.59 inches in the Napa Valley subbasin. Over the past seven years, groundwater use has consistently exceeded the county’s recommended 15,000 acre-feet, averaging nearly 18,000 acre-feet. The county water report labels the excessive pumping as an undesirable result under the state-approved groundwater sustainability plan, which targets a 10% reduction. The county plans updates to its Water Availability Analysis and incentives to encourage conservation, including irrigation system checks, certification tied to conservation, and potential incentives to delay vineyard replanting.

"The region pumped about 16,580 acre-feet of groundwater in 2025 more than 1,500 acre-feet than what the county deems sustainable for the area, according to The Press Democrat, citing a county water report. During that same year, the Napa Valley subbasin received a below average amount of rainfall, representing about 21.59 inches."

"Over the past seven years, Napa Valley on average has consistently used more groundwater than the 15,000 acre-feet than the county recommends, pumping nearly 18,000 acre-feet. The country report labeled the excessive pumping an undesirable result under the state-approved groundwater sustainability plan, which aims to reduce its groundwater use by 10%."

"The county has failed the past six years to meet its recommended 15,000 acre-feet guideline, surpassing 19,000 acre-feet in 2022 and more than 22,000 in 2021, the outlet reported. In an effort to mitigate groundwater use, the Napa County Board of Supervisors plans on introducing an update to the county's Water Availability Analysis and provide incentives that will motivate groundwater users to preserve the natural resource."

"Natural resources manager Jamison Crosby said during the board meeting last week that other efforts include an irrigation system to determine if the amount of water it's applying is the same it was designed to apply, as well as a certification program tied to conservation efforts and possible incentives to delay vineyards from replanting vines one they've been removed to let the groundwater replenish."

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