A look back at Guerneville's 'Great Valentine's Day of Flood 1986'
The night before the river rose to record levels, rain fell for 24 hours straight. Locals still call it the 'Great Valentine's Day Flood of 1986,' but there was no romance there, not when water consumed the community, causing $40 million in damage.
Copyright © 2026 KGO-TV. All Rights Reserved.
