This status does not indicate current water quality. This means that this site has been issued a Blue Flag status for the current swimming season. We may manually set the status for a specific beach if we have concerns about the sampling protocol, if there is an emergency, if monitoring practices don't exist or have recently changed, or other reasons that render this site "special." Red means the beach failed water quality tests 40% of the time or more. Yellow means the beach passed water quality tests 60-95% of the time. Green means the beach passed water quality tests 95% of the time or more. This means that rather than displaying current data it displays the beach's average water quality for that year. When swimming season is over or when a beach's water quality data has not been updated frequently enough (weekly) it goes into historical status. Grey means water quality information for the beach is too old (more than 7 days old) to be considered current, or that info is unavailable, or unreliable. Red means the beach’s most recent test results failed to meet water quality standards. NASA images courtesy Jesse Allen, Earth Observatory, using data obtained courtesy of the NASA/GSFC/METI/ERSDAC/JAROS, and U.S.Green means the beach’s most recent test results met relevant water quality standards. Cat Island forms the western boundary of the park, which consists of a string of islands along the Mississippi and Florida coasts, including East and West Ship Island. To preserve the islands, Congress added them to Gulf Islands National Seashore, the United States’ largest national seashore, under the National Park Service. coast, East Ship Island is one of the few that remains in its natural state, unchanged by population. Construction can interfere with beach building and can degrade the vegetation that anchors dunes on the islands. In competition with nature, humans also have a large impact on barrier islands. In general, barrier islands are constantly changing, their shorelines building and eroding at remarkable speed, with dramatic change occurring routinely when powerful storms strike. The islands had been a single island until Hurricane Camille cleaved it in two in 1969. The section of the northwestern shore that holds the lighthouse and fort seems to be unchanged.Įast and West Ship Islands are no strangers to the type of erosion Katrina inflicted on them. The southern tip of Cat Island is missing, and the pointed tips of Ship Island have been rounded out. West Ship Island, which hosts a civil war fort and a historic lighthouse, and Cat Island have also shrunk slightly. The ghost shores of the island are faintly visible under the water as a lighter shade of blue. Some of the erosion may have occurred in other storms between 20, but Katrina is probably responsible for much of the damage. Compared to April 2001, most of East Ship Island has disappeared beneath the ocean by September 8, 2005. The most dramatic change can be seen in East Ship Island. A diagonal line where the ocean changes color indicates the division between the two images. The left half was acquired on June 4, 2005, while the right half was taken on April 22, 2001. The lower image is a combination of two different ASTER scenes. The Advanced Spaceborne Thermal Emission and Reflection Radiometer ( ASTER) captured the top image of East and West Ship Islands and Cat Island on September 8, 2005. The battering waves ate away at the islands, permanently altering their shape. A fringe of barrier islands lines the coast of Mississippi, protecting the mainland from the pounding waves of most ocean storms, but the islands could not shelter the mainland from Hurricane Katrina’s exceptionally powerful storm surge.
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