1. Forked Island to Ellender, including the Mermentau River, Grand Lake, and White Lake, Louisiana Yale Public content 1995. 2011-11-08T15:27:02Z. 2015-10-21T15:05:05Z. U.S. Coast and Geodetic Survey. The Survey ; NOAA Distribution Branch, N/CG, National Ocean Service. English. Public. Gulf Intracoastal Waterway and Louisiana.