West Fork San Jacinto

Watershed Hydrology

The West Fork San Jacinto watershed covers 383 square miles and includes portions of Riverside and San Bernardino counties in California. The hydrology of the area is heavily influenced by the San Jacinto Mountains, which receive a significant amount of precipitation and snowpack during the winter months. The snowpack serves as an important source of surface water for the watershed during the dry summer months. The watershed includes several reservoirs, including Lake Hemet and Lake Fulmor, which provide water for both drinking and irrigation. The climate of the area is characterized by hot summers and mild winters, with temperatures ranging from the 40s to the 100s. In recent years, the area has experienced periods of drought, with below-average precipitation and reduced snowpack. These trends have led to concerns about water availability in the watershed and the need for effective water management strategies.


Surface Flows

West Fork San Jacinto Watershed

Snowpack Depths

West Fork San Jacinto Watershed

Dams & Reservoirs

West Fork San Jacinto Watershed

Groundwater Levels

West Fork San Jacinto Watershed

West Fork San Jacinto Rivers

Rivers of the Watershed