Tijuana Watershed

The Tijuana River Watershed spans the U.S. Mexico border and covers approximately 1,750 mi², with one-third of watershed in California and two-thirds in Baja California. The natural resources are rich and varied. The watershed is located in an internationally recognized hotspot of biodiversity where a large number of threatened or endangered plant and animal species are found. More than one million people live within the boundaries of the Tijuana River Watershed. There are many political jurisdictions that govern portions of the watershed including; the County of San Diego, the City of San Diego, the City of Imperial Beach, several Native American Reservations, and the municipalities of Tijuana, Tecate, and Ensenada. The States of California and Baja California also provide governance for areas of the watershed, as do federal agencies from Mexico and the United States.
Hydrologic Areas:	Tijuana Valley, Potrero, Barrett Lake, Monument, Morena, Cottonwood, Cameron, Campo
Major Water Bodies:	Tijuana River, Cottonwood Creek, and Tijuana Estuary
If you would like to select one of these major water bodies as your collection site, follow these instructions to get the information you will need for the registration form: Copy the name of the water body (e.g., San Marcos Creek). Go to www.topozone.com and paste the water body name in the place name field. Select CA and click the Search button. The results will look similar to the screenshot below: The information you will need to write down or copy from the results are: Type: the water body type. USGS Quad: the Nearest City field on the registration form. Lat: the latitude. Lon: the longitude. Enter the information into the Collection Site Information section of the registration form. If you need assistance in selecting a collection site, please contact us. We'll be happy to help you find a site that's as close to your group' or school's location as possible.