Managing Scarcity » Catch basins in Border Fields National Park trap sediment and trash as it flows downhill from Tijuana Canyons, before it can wash into the Tijuana River Estuary and the Pacific Ocean. August 18, 2010.

Catch basins in Border Fields National Park trap sediment and trash as it flows downhill from Tijuana Canyons, towards the Tijuana River Estuary and the Pacific Ocean. August 18, 2010.