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The mine pit and several Gold Rush-era buildings are listed on the National Register of Historic Places as the Malakoff Diggins-North Bloomfield Historic District. [3] The "canyon" is 7,000 feet (2,100 m) long, as much as 3,000 feet (910 m) wide, and nearly 600 feet (180 m) deep in places.
Water from the Lake Hodges Reservoir services the customers of the Santa Fe Irrigation District and the San Dieguito Water District. The dam is 131 ft tall and 729 ft wide. [8] In 2005, the San Diego County Water Authority, in conjunction with the City of San Diego, began work on a pipeline to connect Hodges Reservoir with Olivenhain Reservoir.
[citation needed] The mine was an open-pit mine from 1901 to 1908, and was transitioned to an underground mine in 1906. [ citation needed ] Currently, the mining methods used are bulk mining with the vertical retreat method (95% of production), and selective stoping with the mechanized cut-and-fill method (5% of ore production).
Location of San Diego County in California. This is a list of the National Register of Historic Places listings in San Diego County, California.. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in San Diego County, California, United States.
In 2016, the University of San Diego conducted soil sampling in the vicinity of the mine site. Some locations, including portions of the Miner's Ridge Loop trail revealed high levels of arsenic present. As of January 6, 2017 the San Diego City Attorney recommended closure of the lower sections of the trail pending further study.
County Route S21 (CR S21) is a south–north running road serving the coastal communities of northern San Diego County, California, United States, running from San Diego in the south to Oceanside in the north. The route is signed in many places as "Historic Route 101" with the official Historic U.S. 101 shields.
Cuyamaca Rancho State Park is located in the Peninsular Range, which extends from the San Jacinto Mountains north of the park, southward to the tip of Baja California.At the western edge of the most seismically active area in North America, the range is a great uplifted plateau, cut off from the Colorado Desert to the east by the Elsinore Fault Zone, where vertical movement over the last two ...
Agua Caliente is located about 110 miles (180 km) east of downtown San Diego. Spring water feed pools include an outdoor swimming pool, an outdoor wading pool for children, and an indoor 102 °F (39 °C) therapeutic spa. [3] Site amenities include a caravan area, full and partial hookup RV sites, non-hookup sites, tent camping, and cabins.