Descanso, Alpine and Pacific Railway

Wright's Field in Alpine is a 230-acre nature reserve in Alpine, California. The property was purchased in 1990 by Back Country Land Trust.The ecosystems found in Wright's Field include native grassland, Engelmann oak woodland, riparian (streamside) habitat, vernal pools, and coastal sage scrub/chaparral. Native and nonnative plants found in Wright's Field include sunflowers, buckwheat, sugarbush, canchalagua, wallflowers and Engelmann oak trees among others. Special wildlife in this field are the Hermes copper butterfly and the Quino checkerspot butterfly. Also, a conservation project for the rare plant, thornmint, is currently being held in this field with successful amounts of progress and research.

Alpine is a census-designated place (CDP) in the Cuyamaca Mountains of San Diego County, California. Alpine had a population of 14,696 at the 2020 census, up from 14,236 at the 2010 census. The town is largely surrounded by the Cleveland National Forest and borders two reservations of the Kumeyaay Nation, Viejas and Sycuan, and the rural unincorporated areas around the city of El Cajon.

Alpine Beer Company is an American brewery founded in 1999 by Pat McIlhenney in Alpine, California. Alpine Beer Company produces a variety of beers, many of which have high alcohol content and are strongly hopped beers. The beers have acquired a following due to the popularity of such beers as Pure Hoppiness and Exponential Hoppiness IPAs. Alpine Beer Company was ranked as the fifth best brewery in the US in 2006 by Beer Advocate. Some Alpine sour beers have been mentioned in the Los Angeles Times as "part of a new wave of refreshing American sour beers".Alpine has won three Great American Beer Festival medals and eight World Beer Cup medals. In 2003, Alpine won the Bronze in the GABF for its Mandarin Nectar and in 2004 won a silver for McIlhenney’s Irish Red. It was also awarded a gold medal in the 2004 World Beer Cup and a Silver in 2008 for McIlhenney’s Irish Red. In 2016 Alpine was awarded the GABF bronze medal in the Strong Pale Ale category for their HFS IPA.Prior to founding its own brewery in 2002, Alpine Beer Company had been contracting brewing of its “McIlhenney’s Irish Red”, from AleSmith Brewing Company. In November 2014, Alpine Beer Company was acquired by fellow San Diego brewery Green Flash Brewing Company.

Loveland Dam (also called Sweetwater Falls Dam) is a dam across the Sweetwater River in San Diego County, California. The dam forms long, narrow Loveland Reservoir which stores 25,387 acre-feet (31,314,000 m3) of water. It is operated primarily for flood control and municipal water storage in conjunction with downstream Sweetwater Dam but the reservoir is also open to the public for fishing.The dam stands 203 feet (62 m) high and spans 765 feet (233 m) across the narrow gorge of the Sweetwater River, 2.4 miles (3.9 km) south of Alpine. It is built entirely of concrete and has a thin arch design. Loveland is the younger of the two dams on the Sweetwater River; the other, Sweetwater, was built in 1888 while Loveland was only constructed in 1945. It is named after Chester H. Loveland, president of the California Water and Telephone Corporation, the firm that built it. The Loveland Reservoir is considered a better water storage facility than Sweetwater because of its much smaller surface area (454 acres compared to 960) and comparable capacity, thus it is less vulnerable to evaporation.

Harbison Canyon is a census-designated place (CDP) in San Diego County, California. Harbison Canyon had a population of 4,048 as of the 2020 census, up from 3,841 as of the 2010 census.

El Capitan Dam is an embankment dam or Hydraulic fill dam on the San Diego River in southern California. The dam forms the 112,800-acre-foot (139,100,000 m3) El Capitan Reservoir and serves mainly to supply water to the city of San Diego as well as providing flood control. The dam is connected to the San Diego municipal water system via the El Capitan Pipeline, which extends approximately 30 miles (48 km) to the city. It is the second largest storage facility in San Diego's water supply system, after San Vicente Dam.

El Capitan Reservoir is a reservoir in central San Diego County, California. It is in the Cuyamaca Mountains, about 30 miles (48 km) northeast of the city of San Diego and two miles northwest of the town of Alpine. The reservoir is formed by El Capitan Dam on the San Diego River and has a capacity of 112,800 acre⋅ft (139.1 million m3). The 237-foot (72 m) dam is composed of hydraulic fill and was completed in 1934. The dam is owned by the city of San Diego (Originally owned by the Kumeyaae tribe) and its primary purpose is to supply drinking water. In order to make way for the construction of the dam, the native Kumeyaay people were forcibly relocated to the Capitan Grande Reservation. The amount of runoff that enters the reservoir varies considerably. During a 25-year period, it ranged from 1,000 to 70,000 acre⋅ft (1.2 to 86.3 million m3) per year (39 to 2,700 L/s). The water in the reservoir usually consists of runoff from above the dam, but in years of drought, water is sometimes transferred to it from San Vicente Reservoir, which is the terminus of the First San Diego Aqueduct. According to the City of San Diego's General Plan Seismic Element, Division of Safety of Dams engineers "restricted the maximum water surface of El Capitan Dam to an elevation 30 feet lower than spillway, although permitting the temporary storage of storm inflows above the specified level for short periods." This requirement was added after the 1971 San Fernando earthquake, where "a loss of about 30 feet of dam height resulted" at the Lower Van Norman Dam due to "liquefaction of the hydraulic fill on the upstream side of the embankment". There is limited recreation available at the reservoir. Boating and water skiing are available from May through October. Personal water craft are limited to a designated zone, except when towing someone. Also, the long and narrow north arm of the lake is only open to watercraft on Sundays. Fishing is allowed all year. There is no camping at the lake. The nearest camping site is 8.5 miles (13.7 km) away at Lake Jennings or 12.5 miles (20.1 km) away at Viejas Campground.

Viejas Valley is a valley located in eastern San Diego County, California.

Flinn Springs is an unincorporated community in the East County region of San Diego County, California.

Viejas Mountain is a mountain in San Diego County in the U.S. state of California. At 4,189 feet (1,277 m), Viejas Mountain is the 48th tallest peak in San Diego County. The mountain can be seen from parts of metropolitan San Diego. The summit is about 3 miles (5 km) northeast of the community of Alpine in the Cleveland National Forest.

Dehesa is a populated place in San Diego County, California. Dehesa is located along the Sweetwater River and Dehesa Valley between Harbison Canyon, Crest, Alpine, and Granite Hills. Dehesa is a mainly agricultural community. It is served by the Dehesa School District, which consists of one school serving grades kindergarten through 8. It is located in the 53rd Congressional District of California.The reservation of the Sycuan Band of the Kumeyaay Nation runs along the border of Dehesa. Dehesa is also the home of the Sycuan Casino.

Crest is an unincorporated community in the East County region of San Diego County, California. The Crest census-designated place (CDP) had a population of 2,828 at the 2020 census, a rise from 2,593 at the 2010 census.