2012 Map of Green Island

About this map

Green Island stands as a prominent landmark within the coastal waters of South Texas, surrounded by the shifting shoals and shallow basins of the Laguna Madre. This 2012 survey by the U.S. Geological Survey provides a precise view of the estuarine environment just north of the Rio Grande Valley. The map captures the isolation of the shoreline and the delicate coastal geography, including Deer Island further to the east. These landforms are critical markers for maritime navigation and environmental study in an area defined by minimal terrestrial features and extensive submerged lands.