2020 Map of Thornwell

About this map

The low-lying wetlands of Jefferson Davis and Cameron Parishes are defined by an intricate network of waterways and reclaimed coastal prairie. This landscape is dominated by the expansive Lake Arthur and the winding Bayou Lacassine, where natural features like Goose Island and Biscuit Island emerge from the surrounding Willow Marsh. The human footprint in this part of Louisiana is closely tied to agricultural drainage and aviation, evidenced by the extensive Thornwell Drainage Canal and Holton and Winn Drainage Canal. Small settlements such as Thornwell, Lowry, and Niblett are connected by a grid of rural roads including Warehouse Rd and Lacassane Rd. The presence of Lyon Airport and Goose Island Airport underscores the region's reliance on aerial access for surveying or managing these vast tracts of marsh and prairie.