2020 Map of Timbalier Island

About this map

Timbalier Island and its surrounding barrier features mark the edge of the Louisiana coast where the marshlands meet the Gulf of Mexico. This maritime landscape is defined by its shifting sands and tidal passages, situated along the parish line between Terrebonne Parish and Lafourche Parish. The map details the separation of inner waters like Terrebonne Bay and Timbalier Bay from the open sea, protected by landforms such as Caillou Island and Brush Island. Navigational features like Caillou Pass and Little Pass Timbalier highlight the dynamic nature of these coastal inlets. In a region where the shoreline is constantly reshaped by the elements, these islands provide the primary buffer for the mainland estuaries and wetlands to the north.