For an area that gets less than 15 inches of rainfall a year, sourcing fresh water is a major feat of engineering.

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About half Claremont’s water comes down from the watershed below Mount Baldy, flowing down into the San Antonio and Thompson Creek Dams. The spreading grounds allow water to percolate into an aquifer and eventually flow to 6  basins, separated by earthquake faults 300-500 feet underground amid deposits of sand and gravel.

The surrounding community accesses the water through a series of wells, two of which Pomona College owns. The college allows the Golden State Water Company to the pump those wells, and in return, purchases back the water at a fraction of what the rest of the colleges pay.

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The other half of our water comes from northern California through the State Water Project, the largest state-built water development and conveyance system in the country. The Project was completed in 1971 and is run by the California Department of Water Resources. Power plants, reservoirs, lakes, storage facilities, canals, and pipelines all work to capture and convey water to 29 water agencies and over 20 millions Californians.

43650015Pyramid Lake, visible from Interstate 5, is a State Water Project reservoir.

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