Can California Red-legged Frogs and DWR Operations and Maintenance Activities Co-exist?
(poster) In 1996 the California red-legged frog was listed as federally threatened, and all maintenance removals of sediment and vegetation in drainages flowing under the California and South Bay aqueducts within DWR’s Delta Field Division ceased in order to prevent “take” of a listed species. Since all maintenance activities stopped, sediment load and vegetation growth within these drainages increased. Several permits needed to be obtained in order to proceed with the maintenance work at sites known or believed to contain these frogs. After receiving the permits, including a Biological Opinion from the U. S. Fish and Wildlife Service and a 1601 Programmatic Stream Alteration Agreement from the Department of Fish and Game, modified maintenance activities are now past their second year. The poster describes the maintenance activities and shows preliminary results of monitoring to determine whether or not these activities benefit the resident California red-legged frog populations. Go Ba
