Name: Bathymetry - Matagorda Bay

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Description: Bathymetry for Matagorda Bay was derived from twenty-three surveys containing 250,396 soundings. Six overlapping, older, less accurate surveys were omitted, and the overlap from six older surveys was also omitted. The average distance between surveys was 67 meters. The twenty-three surveys used dated from 1934 to 1992. Seven surveys from 1934 and 1935 cover the northeast, northwest, and southern extremes of Matagorda Bay. Sixteen surveys from 1991 and 1992 cover the central and eastern portions of the bay. The range of soundings for the 23 surveys used was 0.2 meters to -26.6 meters at mean low water. Mean high water values between 0.1 and 0.3 meters were assigned to the shoreline. Twenty-nine points were found that were not consistent with the surrounding points; twenty-eight of these were from the same survey. All of these were removed prior to tinning. Matagorda Bay has twenty-one 7.5 minute DEMs and two one degree DEMs.

Copyright Text: National Ocean Service/Special Projects, NOAA, Department of Commerce

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