Located near Chula Vista, California, Lo Otay Lake is a reservoir that historically served as an important water source for the city of San Diego. The lake was created in 1918, and today it is part of a larger water storage network that includes other reservoirs like San Vicente and Murray. The hydrology of Lo Otay Lake is primarily influenced by its connection to the Lower Otay Reservoir, as well as by local rainfall and snowpack levels. It also receives water from the Otay River and several smaller creeks. The lake is used for agricultural irrigation and recreational activities such as fishing and boating. In addition, it serves as a vital habitat for a wide range of aquatic species, including bass, catfish, and bluegill.