Gavilan Plateau

Lake Mathews is a census-designated place in Riverside County, California. Lake Mathews sits at an elevation of 1,775 feet (541 m). The 2010 United States census reported Lake Mathews's population was 5,890.

Gavilan Mining District is a gold mining district 6 miles west of Perris, California and Gavilan Hills and east of Gavilan Peak on the Gavilan Plateau in Riverside County, California. It includes only 2 mines: the Ida Leona Mine and the Gavilan Mine located within yards of each other.

Temescal Mountains, also known as the Sierra Temescal (Spanish for "sweat lodge range"), are one of the northernmost mountain ranges of the Peninsular Ranges in western Riverside County, in Southern California in the United States. They extend for approximately 25 mi (40 km) southeast of the Santa Ana River east of the Elsinore Fault Zone to the Temecula Basin and form the western edge of the Perris Block. The Santa Ana Mountains lie to the west, the Elsinore Mountains to the south and the Perris Valley and Lakeview Mountains to the east.

Estelle Mountain is a 2,767-foot (843 m) peak, the tallest in the Temescal Mountains. It is located on the west side of the upper part of the range overlooking the Temescal Valley, in Riverside County, California.Estelle Mountain is drained on its north slopes by Dawson Canyon Wash and by ten other unnamed canyons all tributary to Temescal Creek on its west, south and east facing slopes.

Walker Canyon is a canyon in the Temescal Mountains, in Riverside County, California. It lies divides Alberhill Summit, on the west and the balance of the range to its east. Temescal Creek flows northward through the canyon from where it heads at 33°42′33″N 117°21′43″W 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.

Alberhill Canyon is an informally named valley and arroyo in the Temescal Mountains of Riverside County, California. It is named for the former mining settlement and populated place of Alberhill that lay opposite the mouth of the arroyo at its confluence with Temescal Creek.The canyon and the arroyo have their source is at 2,260 feet in the Temescal Mountains at 33°46′00″N 117°22′04″W, 3 miles east of Estelle Mountain. The arroyo is ephemeral, to its mouth in the wetter years, during the wet season in Southern California, otherwise being dry for the balance of the year. From its source Alberhill Canyon trends southwest to enter Walker Canyon 0.7 miles north northeast of Alberhill, California. From the canyon mouth it is a wash that runs down a short distance to a drain under the I-15 and to its confluence with Temescal Creek northeast of the old schoolhouse of Alberhill, at an elevation of 1214 feet at 33°43′45″N 117°23′39″W. Prior to the construction of the freeway the Alberhill Canyon arroyo ran into Temescal Creek in the vicinity of the drain, the creek was moved during the freeway construction to the south of the freeway.

Rice Canyon Creek is a tributary creek or arroyo of Temescal Creek in Riverside County, California. Rice Canyon Creek has its source at the head of Rice Canyon at an elevation of 3440 feet in the Santa Ana Mountains at 33°41′54″N 117°24′11″W east of the 4313 foot peak on the north south divide of the range. It is a wash that runs down from the canyon mouth 33°41′07″N 117°27′08″W at 1631 feet to its mouth at its confluence with Temescal Creek near Alberhill, California at an elevation of 1220 feet. Rice Canyon Creek has a tributary, Bishop Canyon Creek which enters the wash on the left a little below the mouth of Rice Canyon at 33°42′05″N 117°24′07″W.Rice Canyon Creek flows in the rainy season in its upper reach but is an ephemeral arroyo in its lower reach below the narrows 0.80 miles above the canyon mouth, and flows on the surface below the narrows only after more heavy rain events, and is dry the rest of the year. Rice Canyon's creek flows during the rainy season below its narrows to its mouth but its surface flow dries up below the narrows about 0.8 miles above its mouth in the canyon during the dry season, and above that in years with severe drought conditions. However some waterholes remain even in the dry years in the upper reach. Much of the wash in modern times has been interrupted by clay mining operations that stops the surface flows of water from Rice Canyon Creek from reaching Temescal Creek.

Cajalco Canyon Creek is an ephemeral stream that flows through Cajalco Canyon in the Temescal Mountains of Riverside County, California, United States. It is a tributary to Temescal Wash, itself a tributary to the Santa Ana River. Cajalco is thought to be a Hispanic spelling of the word for "quail" in the languages of the Luiseño and Cahuilla who lived in the area. The word Cajalco is an acronym- California Jalisco Land Company of Los Angeles

Alberhill (formerly, Alberhil) is an unincorporated community in Riverside County, California. Alberhill is located 5.5 miles (8.9 km) northwest of Lake Elsinore. It lies at an elevation of 1234 feet (376 m). Alberhill was named after C.H. Albers and James and George Hill.

Lake Mathews is a large reservoir in Riverside County, California, located in the Cajalco Canyon in the foothills of the Temescal Mountains. It is the western terminus for the Colorado River Aqueduct that provides much of the water used by the cities and water districts of the Metropolitan Water District of Southern California. The reservoir is fenced and closed to all public access. The lake is near the Riverside community of Lake Hills, and is skirted by Cajalco Road on the south, El Sobrante Road on the north and east, and La Sierra Avenue on the west. La Sierra Avenue traverses the top of the west dike. The reservoir was constructed by building a large earthfill dam across the northern side of the basin. Two smaller dams, called dikes, were built during the 1961 (1961) expansion to increase the lake's capacity.

Citrus Hill High School is a secondary public co-ed school serving students of Moreno Valley, Perris and Riverside in the Val Verde Unified School District.

The Three Sisters is a small mountain range, or a mountain with three summits, within the northeastern Temescal Mountains, in Woodcrest within unincorporated Riverside County, California. the highest peak is nicknamed "Flat Top" because of the flattened top it has. There are many local rumors as to why the top of the hill was flattened. The locals walk, ride horses and ride motorcycles on flattop daily. Woodcrest's own 4 July fireworks takes place there annually. The Three Sisters, is located east and north of Mockingbird Canyon, and south of Woodcrest.