2025 Map of Eastern Isles Dernieres

About this map

Isles Dernieres and the surrounding coastal waters of Terrebonne Parish define this landscape of shifting sand and sediment. This map documents a dynamic marine environment where the barrier islands protect the inner marshes from the Gulf of America. Named waterways like California Canal and Trinity Bayou cut through the fragile landforms, illustrating the complex hydrology of the Louisiana coast. Small land extensions such as Bodwin Point and Point Mast provide the only breaks in the expansive waters of Terrebonne Bay and Trinity Bay. The presence of several passes, including Old Camp Pass and Wine Island Pass, highlights the continuous exchange between the open sea and the protected bays, a critical process for the local ecosystem as it appeared in recent years.