Water Quality

Salt marsh habitat throughout Southern California is jeopardized by stormwater flows and sedimentation. In the Tijuana River Estuary, tidal channels and salt marsh habitat have been lost to sedimentation. The Goat Canyon Sediment Basins were constructed (2003-2005) to stop excess sediment flowing from a highly disturbed canyon in Mexico. These basins capture up to 60,000 cubic yards of material each winter and must be excavated every fall. These basins serve as a model for the region. The Stewardship Program plays an active role in managing this facility with tasks including: soliciting contractors and over-seeing basin work, promoting beneficial re-use of the material, promoting basin improvements such as trash capture and consolidating devices; monitoring basin conditions throughout the year and during excavation, and maintaining environmental permits necessary for facility operation.


The Mission of the Stewardship Program at TRNERR is to serve as a consistent, hands-on land management program and regional resource that has the knowledge and ability to:

  • protect endangered and valued species and habitats from general degradation
  • provide ground-based input and assistance for large-scale restoration and research projects
  • identify and control new infestations of invasive non-native plants
  • maintain suppressed levels of controlled occurrences of invasive non-natives plants
  • develop good working relationships with interested NGO’s
  • appropriate government entities and community members; engage community involvement by developing and maintaining volunteer stewardship projects
  • assist with facility maintenance and public access
  • monitor key environmental variables
  • produce reports and coordinate environmental permits as necessary

Priority Topics

Water Quality

Changes in Biological Communities

Habitat Alteration