Description: A National Ocean Survey map of Southport current to 1982. This orthophotomap shows both topographic and bathymetric features. Topographic and bathymetric contour intervals are shown in meters. Topographic contour lines are shown at 2-meter intervals with supplemental contour intervals at 1 meter. Bathymetric contour intervals are at 1 meter with supplementary 0.5-meter contours. Bathymetric datum is mean lower low water. The map shows man made structures such as primary, and secondary roads, bridges, oil tanks, powerplant, shrimp farm, parks, and radio towers as well as various buildings including residences. Natural features include bayous, swamps, drylands, wetlands, and partially submerged land exposed at mean low tide. The map scale is 1:24,000. This information is not intended for navigational purposes. The National Geodetic Vertical Datum of 1929 is used in this map. The projection used 1927 North American Datum with reference on converting to North American Datum 1983.
Source: USGS and NOAA, Southport Quadrangle (Reston, VA: United States Geological Survey, 1982)
Map Credit: Courtesy the U.S. National Oceanic and Atmospheric Administration |
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