One of the problems I've had with maps of the Sword Coast is that there aren't very many that specifically show locations within the Mere of Dead Men. I've tried to compile every reference I can think of to locations within the Mere and label their approximate positions on the map. Where conflicts in position exist, I have taken my best guess. The biggest issue on the map was the location of the city of Leilon. While official D&D maps in 5th Edition, such as the Lost Mine of Phandelver, show Leilon as being located on the High Road, many earlier references list it as an important port city between Neverwinter and Waterdeep. Further, the video game Neverwinter Nights 2 located Leilon just to the east of Thornhold's current location, on the right side of the High Road. I have chosen to ignore that reference, and then I split the difference between the other two locations of Leilon. I moved it just to the west of the High Road, on a short but well maintained branch, and added a narrow inlet that I've tried to make a sort of passage just on the edge of the Mere of Dead Men swamp that is navigable.