Zayante Area Sediment Source Reduction Plan
Client: County of Santa Cruz
Waterways staff, in conjunction with SH+G, developed sediment load allocation and recommendations to reduce chronic fine sediment inflow as a basis for a Total Maximum Daily Load (TMDL) for the San Lorenzo River Watershed in Santa Cruz County. The project aimed to improve impaired fisheries conditions for steelhead and coho. Work included the development of a GIS database of streams, sub-watershed drainage basins, and road networks. Erosion rates developed for the Soquel Demonstration Forest by California Department of Forestry were adapted to the San Lorenzo River watershed to calculate sediment yields from roads and other erosion sources.