2021 Map of Marquesas Keys East

About this map

Marquesas Keys and Boca Grande Key represent the primary landmasses in this maritime survey, marking a vital transition between major bodies of water. The sheet captures the meeting of the Gulf of Mexico and the Atlantic Ocean, separated by the deep waters of the Boca Grande Channel. This environment is characterized by its remote limestone outcroppings and shallow protected waters like Mooney Harbor, which provide insight into the natural state of the Florida Keys' western reaches. The presence of the Straits of Florida along the southern edge highlights the area's significance for navigation and marine geography. This 2021 update documents the exact contours of these low-lying islands, offering a precise record of the shoreline before shifting sea levels or tropical weather events further alter the coastline of Monroe County.