This series consists of watershed conservation, aquatic habitat monitoring, and interagency collaboration efforts done by the Modoc County regarding watershed and fish habitat management, restoration planning, community engagement around the Goose Lake Basin and adjacent watershed regions. Records include project design, implementation, and results; oversized drawings and blueprints for infrastructure improvements such as road crossings and riparian restoration., Reports regarding water quality and fish population monitoring results, as well as detailed data on tributaries and specific native species such as Redband Trout. Arranged as found.