Heavy rainfall sends Russian River over its banks

A flooded house in Guerneville, Calif. on Wednesday. The flooding Russian River turned some communties into islands accessible only by boat.

Floodwater nears mailboxes in Forestville, Calif. The Russian River has crested over flood stage and is expected to continue to inundate the town of Guerneville and nearby areas.

A kayaker paddles through a flooded neighborhood Wednesday in Guerneville, Calif.