Guerneyville is essentially an island and river expected to crest at 46 feet

Northern California town of Guerneville 'officially an island' as ...

https://www.reddit.com/r/bayarea/.../northern_california_town_of_guerneville/

 

Basically, if you're driving west, the river is on your left, and the whole area on the right of the main ...Expected crest in Guerneville is 46 feet.