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Thu Apr 1, 2021, 12:16 PM

(CA) Recent rains send contaminated Tijuana River water farther north

San Diego County health officials issued an advisory Wednesday about ocean water quality in La Jolla, after extending a three-month beach closure Tuesday in Imperial Beach due to sewage contamination in water samples. The closure in southern San Diego County, which began on Christmas Day, now reaches the northern end of Imperial Beach, north of Carnation Avenue. County staff collect samples at 81 San Diego County beaches each week.

During dry months, when fewer than 30 million gallons of water flow through the Tijuana River daily, all of it is treated in Mexico before continuing into the ocean. As a result, most of the year, Tijuana River water flows into the ocean south of the border and continues southward, according to the department's website.

During heavy rains, however, the river's flow is not diverted or treated, and contaminated water follows the river's natural course into the United States, where it can flow well north from the Tijuana Slough depending on the additional influence of tides and wind.

https://www.10news.com/news/local-news/recent-rains-send-contaminated-tijuana-river-water-farther-northhttps://www.10news.com/news/local-news/recent-rains-send-contaminated-tijuana-river-water-farther-north

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