A few valleys eaat of the west coast are below sealevel. They don't have to be, but piping seawater there would save cost as the water level tries to reach equ

A few valleys eaat of the west coast are below sealevel. They don't have to be, but piping seawater there would save cost as the water level tries to reach equilibrium. Then they just need to let the hot sun do its' work, and occasionally open the valve. The Salton Sea, CA, e.g. is 38m below sealevel. Another reason to use below sealevel may be safety: Not all cracks and ground fissures are known, and pumping in large quantitues of saltwater may have an undesired effect on groundwater. https://en.m.wikipedia.org/wiki/List_of_places_on_land_with_elevations_below_sea_level https://en.m.wikipedia.org/wiki/List_of_places_on_land_with_...