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MEMPHIS, Tenn. — An estimated 40 million to 50 million gallons of raw sewage poured into Cypress Creek after a major sewer line broke Thursday, and the Shelby County Health Department is working to do damage control.

The department tweeted a reminder Saturday not to fish or go in or near the water in the southern half of McKellar Lake and Cypress Creek.

There are also signs along the creek and lake to alert the public.

The department announced later Saturday the boat ramp at Riverside Park Marina on 1875 McKellar Drive will be closed off until further notice.

The Tennessee Wildlife Resource Agency and Shelby County Health Department recommended the closure.

There is no immediate danger to public health or safety, according to the health department, though the public is encouraged to follow the signs and avoid the area.

The break happened west of Paul Lowry Road and McKellar Lake.

The City of Memphis Public Works Department said Friday sewer service to nearby homes and businesses isn’t affected.

Construction could take several days. A permanent fix could take three to four days and cost $8 million to $10 million.

Warning signs are placed in the area advising people to avoid the creek due to the sewage release.