To authorize the Secretary of the Interior to construct facilities to provide water for irrigation, municipal, domestic, military, and other uses from the Santa Margarita River, California, and for other purposes.

Authorizes the Secretary of the Interior (the Secretary) to construct, operate, and maintain the Santa Margarita River Project in accordance with the final feasibility report and this Act. Authorizes Project construction only after the Secretary determines that: (1) the Fallbrook Public Utility District, San Diego County, and the Navy have entered into contracts to repay to the United...