The middle reach of Temescal Creek flows through Temescal Valley from Lee Lake to its confluence with the Santa Ana River. According to the Geographic Names Information System the valley head lies just west of Lee Lake, between the Santa Ana Mountains and the Temescal Mountains to the east, and runs to the vicinity of the confluence of Temescal Creek with Brown Canyon Creek where the mountains closed in to create a narrows.[1]
^ abRene Engel, GEOLOGY AND MINERAL DEPOSITS OF THE LAKE ELSINORE QUADRANGLE CALIFORNIA, CAIIFORNIA DEPARTMENT OF NATURAL RESOURCES, BULLETIN 146, DIVISION OF MINES, SAN FRANCISCO, 1959, pp. 50-51