Vail Lake

Butterfield Valley is a valley along the course of Temecula Creek, in Riverside County, California. Its lower end is now filled by Vail Lake. It heads at 33°27′39″N 116°55′34″W and its mouth is at the site of the Vail Lake Dam at the head of the deep canyon Temecula Creek has cut through Oak Mountain to the Pauba Valley.

Wilson Creek is a tributary stream of Temecula Creek, itself a tributary of the Santa Margarita River, in Riverside County, California. Its mouth is at its confluence with the reservoir of Vail Lake on Temecula Creek at an elevation of 1,460 feet (450 m). Its source is located on the south slope of Little Cahuilla Mountain at 33°36′21″N 116°48′44″W, at an elevation of 4,880 feet (1,490 m). It descends south and southwest into Reed Valley, then to its confluence with Cahuilla Creek at the head of Wilson Valley. There it turns to flow westward through Wilson Valley and Lancaster Valley to its confluence with Vail Lake.

The Black Hills are a small and low mountain range in the northern Peninsular Ranges System, in Riverside County, southern California. Its summit is 2,739 feet (835 m). They are located east of the city of Temecula. Oak Mountain is to the south of the hills.

Radec is a small unincorporated community in Riverside County, California, United States. Located roughly 15 miles east by southeast of the city of Temecula, the community of Radec ('Cedar' spelled backwards) is located along Highway 79. Having bought land in the area in 1883, early settler Samuel Tripp set up a post office there. As of 1893–4, a local directory listed the area as growing honey, hay and stock, but also as having "no commercial interest of any kind." A total of 14 people, mainly farmers and beekeepers, plus a laborer and Tripp, are listed in the directory. The County of Riverside owns a small, non-operational cemetery in Radec.

Agua Tibia Wilderness (ATW) is a 17,961-acre (72.69 km2) protected area in Riverside and San Diego counties, in the U.S. state of California. It is mostly within the Palomar Ranger District of the Cleveland National Forest. The area was originally protected as the Agua Tibia Primitive Area until January 1975 when it was added to the National Wilderness Preservation System with the passage of Public Law 93-632 by the United States Congress. Between its inception and 1984, the ATW was San Diego County's only officially designated wilderness area. The Spanish name, Agua Tibia, translates as warm water. Its approximate boundaries are: North – SR 79 East – Arroyo Seco River South – Fray Creek West – Pala Road

Rancho Pauba was a 26,598-acre (107.64 km2) Mexican land grant in present-day Riverside County, California given in 1844 by Governor Manuel Micheltorena to Vicente Moraga and Luis Arenas. The grant was just east of present-day Temecula. At the time of the US patent, Rancho Pauba was a part of San Diego County. Riverside County was created by the California Legislature in 1893 by taking land from both San Bernardino and San Diego Counties.

The Temecula Valley AVA is an American Viticultural Area in the Temecula Valley, located in southwestern Riverside County, California.

The Tucalota Hills are a low mountain range of the Peninsular Ranges System, in Riverside County, California.

The Pechanga Band of Luiseño Mission Indians is a federally recognized tribe of Luiseño Indians based in Riverside County, California, where their reservation is located. As of 2006, there were 1,370 members of the nation. The tribe owns the Pechanga Resort & Casino in Temecula and the naming rights to the San Diego sports arena now known as the Pechanga Arena. There are five other federally recognized tribes of Luiseño bands based in southern California, and an organized band that has not received federal recognition as a tribe. Riverside county documents sometimes have the revived Pechanga language, despite the tribe is often monolingual in English and during Mexican rule of the region (1821-1848), they were Spanish dominant in language.

Cahuilla Creek is a tributary stream of Wilson Creek which is in turn a tributary of Temecula Creek, and the Santa Margarita River in Riverside County, California. Its mouth is at its confluence with Wilson Creek at an elevation of 2,106 feet (642 m). Its source is at 33°36′40″N 116°40′10″W, at an elevation of 5,800 feet, on the west slope of Thomas Mountain 0.6 miles west-southwest of Tool Box Spring. It flows southwest through the Anza Valley and Cahuilla Valley in the Cahuilla Indian Reservation to Wilson Creek, 7 miles south-southwest of Cahuilla Mountain and 20 miles south-southeast of San Jacinto.

Aguanga (; Luiseño: Awáanga, meaning "dog place") is a census-designated place located within the Inland Empire, Riverside County, California. It is located about 18 miles (29 km) east of Temecula and 22 miles (35 km) south-southeast of Hemet. Aguanga lies at an elevation of 1955 feet (596 m). As of the 2010 census, it had a population of 1,028.

The Temecula massacre took place in December 1846 east of present-day Temecula, California, United States. It was part of a series of related events in the Mexican–American War. A combined force of California militia and Cahuilla Indians attacked and killed an estimated 33 to 40 Luiseño Indians. The Mexicans took the military action in retaliation for the Indians' killing 11 Californio lancers, in what was called the Pauma Massacre.