 Temescal Creek flows northward through the canyon from where it heads at in Warm Springs Valley into the upper reach of the Temescal Valley near Alberhill, California.Coming from the Temescal Mountains to the east, Gavilan Wash has its confluence with Walker Canyon near mid way along its length, and Alberhill Canyon has its confluence with Walker Canyon at its mouth.Near Lake Elsinore, California, I-15 passes between Temescal Valley and Warm Springs Valley through Walker Canyon on the east side of Temescal Creek.