The years-long restoration plans for Chicken Ranch Beach were put to the test last month when storms led Third Valley Creek to jump its banks and take a new route across the beach into the bay. 

To assess the changes, Tom Gaman, chair of the Tomales Bay Watershed Council, met on Tuesday with Craig Richardson, open space planner for Marin County Parks, and Greg Kamman, the hydrologist both parties have commissioned for water-quality testing to…