In a part of the Coachella Valley where exclusive neighborhoods wrap around lush golf courses and ponds, a stretch of open desert could be transformed into a new sort of artificial oasis.

A developer has plans for hundreds of homes and a resort featuring a surfing lagoon. If La Quinta’s City Council endorses the proposal, the sandy ground at the base of the Santa Rosa Mountains would become the site of a 12-acre pool where surfers could take off on sculpted lines of peeling waves.