The high tide line is the line on land up to which the highest water line reaches during the spring tide. This line can usually be identified as the line in the sand separating the dry and wet sand. It is also usually identified as a line of wrack or a concentration of shells and/or rocks. At most barrier island sites on the seaside that are open for public use, all areas above the high tide line are closed April – August to protect shorebirds that nest on the beach and other sensitive resources. Please visit site pages for specific information about particular seaside locations.