Oyster Lake is a coastal dune lake, which creates a unique interchange between a natural storm water lake and the Gulf of Mexico. When a coastal dune lake reaches a high water level, flow breaks through the dune system forming a channel
between the lake and the Gulf. The channel, or outfall, is critical for regulating water levels and mitigating flooding. Oyster Lake’s outfall outfall had become severely degraded and the overall health was strained from major
storms and urban growth. Walton County and other state agencies wanted to reinforce the outfall while preserving the natural vegetation. The channel measures 12 feet deep with sides slopes at a gradient of 3 Horizontal: 1 Vertical
(3H:1V). Soil in the channel is composed of fine sand. The length of the channel is 500 feet.