California Sea Grant College Program

The Tijuana River Watershed drains 1,750 square miles of highly varied habitat straddling both sides of the U.S.-Mexico border. The complex network of seasonal creeks that feed this watershed is prone to destructive flash flooding and is known to contribute significantly to chronic beach pollution. As the populations of Tijuana and San Diego continue to grow, it is expected that water quality will continue to decline and flood damage increase unless action is taken.