Urban runoff may contain large amounts of bacteria from a variety of sources such as animal waste, soil, and decomposing vegetation. While many coastal storm drains within San Diego County are permanently posted with white metal warning signs, additional temporary warning signs are not posted for General Advisories.
Activities such as swimming, surfing and diving should be avoided in all coastal waters for 72 hours following rain. This includes all coastal beaches and all of Mission Bay and San Diego Bay. Elevated bacteria levels can persist after a rainstorm depending upon the intensity of the storm, volume of runoff and ocean and current conditions.
The Department of Environmental Health has issued a water contact closure for the ocean shoreline at the Tijuana Slough National Wildlife Refuge and Border Field State Park due to sewage-contaminated flows from the Tijuana River entering the United States. The closure area includes the beach-line from the south end of Seacoast Drive to the International Border.
Signs will remain in place until sample results indicate the ocean water is safe for recreational use. Please be advised that the access road to Friendship Park, within Border Field State Park, may also be affected with sewage-impacted runoff and should be avoided.
For more information on the Tijuana River, call the U.S. International Boundary and Water Commission at 619-662-7600. For updates on beach closure information, visit www.sdbeachinfo.com or call the 24-hour hotline at 619-338-2073.