Bayou Castine at Harbor Pavillion

The Mandeville Lakefront Beach is located In the heart of Old Mandeville, at the mouth of the Bayou Castine stream. The Pontchartrain Yacht Club is nearby and the area has multiple boat slips. The pavilion serves as a recreational area and there's a Splash Park adjacent to the site. It's a great place to bring the kids to enjoy what their local area can offer! Make a day out of it by visiting the nearby Fountainbleau State Park, another one of Pontchartrain Conservancy's sample sites, a beautiful scenic experience of Lake Pontchartrain.

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COVID-19

Keep your distance from other people.

Practicing social distancing is still essential. Only go to the beach if you are able to keep 6 feet or 2 meters away from others. Follow the instructions provided by your local health authorities. If your community has asked that you remain indoors and away from others, do so. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter our efforts to curb the virus’s spread.

Water Quality

Passed water quality tests at least 95% of the time
Historical Status
This status is based on the latest sample, taken on February 3th, 2022. Pontchartrain Conservancy updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on February 3th, 2022 at 5:32 PM.

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Monitoring Frequency

Source Information

The Pontchartrain Conservancy (PC) monitors water quality at sites in the Lake Pontchartrain region. Sampling is conducted year-round, and samples are usually collected on Tuesdays and reported to Swimguide on Fridays. In the event of severe weather or holiday, samples may be collected on Wednesdays. Samples are not collected for the week of Christmas nor Mardi Gras.

Water samples are analyzed at all sites for Fecal coliform and Enterococcus. Water physiochemical parameters are also collected as field measurements. These include: Dissolved Oxygen (DO), water temperature, conductivity, and salinity (parts per thousand). Full weekly results can be viewed at: https://scienceforourcoast.org/pc-programs/water-quality/weekly-data-report/

A location will be marked Green when the average Enterococci in sample does not exceed 35 colonies/100 mL and no more than 10 percent of the individual samples collected shall exceed 130 enterococci colonies/100 mL; AND no more than 25 percent of the total samples collected exceed a fecal coliform density of 2,000/100 mL

A location will be marked Red when the average Enterococci in a sample exceeds 35 colonies/100 mL or 10 percent of the individual samples in the data set exceed 130 enterococci colonies/100 mL; AND if the location exceeds a fecal coliform density of 2,000/100 mL.

A location is marked Grey when there are no current results or there is no available information.

Water Quality Graph