This document summarizes a project that used NASA satellite imagery to map and monitor mangrove extent in Everglades National Park over multiple time periods. The objectives were to create a replicable methodology using Earth observations and Google Earth Engine to map changes over time. The methodology included collecting Landsat data, random sampling, image processing, classification, and accuracy assessment. The results showed changes in mangrove extent between 1995, 2005, and 2015. Future work could include more in situ data and samples to focus on ecological forecasting.