Eel River water flows through a canal below PG&E's Potter Valley powerhouse in Potter Valley, Calif., on May 23, 2026. The diverted water feeds the East Branch Russian River and Lake Mendocino, a supply now in question as PG&E decommissions the project. (Roger Coryell/Bay City News)

MENDOCINO CO., 7/11/26 — Drill a well in Redwood Valley, and a gallon a minute can pass for good news. Twenty gallons a minute, by local standards, is a gusher. Drill one a few miles south, inside the city of Ukiah, and some wells pump more than 1,000.

Same valley, same rain. The difference is what’s under the ground.

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