
An underground channel over 70 km long: what is Delta Project, the 25 billion dollar construction
Credit: California Department of Water Resources. The Delta Conveyance Project (DCP) is a project that provides for the realization in California of a 72 km underground tunnel with a diameter of about 11 meters. In most of the water used in California, in fact, it comes from the vast delta where the salted water of the Bay of San Francisco ...








