San Pasqual Valley, San Diego
ā¦unincorporated land within San Diego County, and on the south by the city of Poway and the community of Rancho Bernardo. San Pasqual Valley is home to the San Diego Zoo Safari Park. State Highway 78 runs through the valley between Escondido and Ramona. The valley is part of the Santa Ysabel Creek watershed, which drains into theā¦