Nautical charts. Intracoastal Waterway. Intracoastal Waterway, New Orleans to Calcasieu River, east section, La., Gulf Coast, topography by Coast and Geodetic Survey in 1932 and 1933, supplemented by surveys by U. S. Geological Survey 1932-35, and War Dept. in 1932 and 1933, hydrography by Coast and Geodetic Survey in 1934-36; chart 1050. [Scale 1:175,000.]