Lake Sonoma ended the year about a foot higher despite 12 inches less rain. Lake Mendocino closed Water Year 2026 holding about 9,100 acre-feet less than a year earlier, as Eel River imports through the Potter Valley Project keep shrinking.
Daily storage in Lake Mendocino through Water Year 2025 and Water Year 2026, from California Data Exchange Center readings at station COY. (Chart: Wine Country Gazette)
Lake Sonoma ended the year about a foot higher despite 12 inches less rain. Lake Mendocino closed Water Year 2026 holding about 9,100 acre-feet less than a year earlier, as Eel River imports through the Potter Valley Project keep shrinking.