Los Peñasquitos Lagoon
Los Peñasquitos Marsh Natural Preserve and Lagoon is a coastal marsh in San Diego County, California, United States situated at the northern edge of the City of San Diego, forming the natural border with Del Mar, California. This bar-built estuary divides a colony of the endangered Torrey pine on a narrow coastal strip. Three streams empty into the lagoon: Carroll Creek, Carmel Creek, and Los Peñasquitos Creek, with a total drainage basin area of 95 square miles.