Pub. Resources Code, § 33502

(a) The territory of the conservancy consists of that portion of Riverside County bounded by a line commencing at the intersection of the highest elevation of the San Jacinto Mountains and the range line common to Range 2 East and Range 3 East, S.B.M., in the vicinity of the western limits of the Sonoran Desert; thence north along that range line to its intersection with the San Bernardino-Riverside County boundary, thence east along the San Bernardino-Riverside County boundary to its intersection with the highest elevation of the Little San Bernardino Mountains; thence meandering southeast and east along the points of highest elevation of the Little San Bernardino Mountains, the Cottonwood Mountains, and the Eagle Mountains to the point of intersection with the range line common to Range 12 East and Range 13 East, S.B.M.; thence south along that range line to its intersection with the township line common to Township 5 South and Township 6 South, S.B.M.; thence east along that township line to its intersection with the range line common to Range 13 East and Range 14 East, S.B.M.; thence south along that range line to its intersection with the boundary of the Chocolate Mountains Aerial Gunnery Range; thence west and south along the boundary of the Chocolate Mountains Aerial Gunnery Range to its intersection with the Imperial-Riverside County boundary; thence west along the Imperial-Riverside County boundary to its intersection with the highest elevation of the Santa Rosa Mountains; thence meandering northwest and north along the points of highest elevation of the Santa Rosa and San Jacinto Mountains to the point of beginning; and as more specifically set forth in that certain map entitled “Coachella Valley Mountains Conservancy” and dated ____ 1999, and placed on file with the Secretary of State, which map is incorporated in this subdivision by this reference.

(b) The governing board of the conservancy may adjust the boundary delineating the territory of the conservancy, but not by more than 500 yards from the boundary as mapped pursuant to subdivision (a), to embrace within the conservancy adjacent lands that have any of the resource values specified in Section 33500. Any adjustment in the boundary shall be reflected in a revision to the map specified in subdivision (a), which revision shall be promptly filed with the Secretary of State.