Once roughly five times the size of Lake Superior, Megalake Chad was a vast inland body of water that has drastically receded over the past 5,000 years. Building upon previous geomorphic mapping, this study aims to quantify the lake's paleo-hydrology to evaluate the environmental impacts of its rapid desiccation during the Holocene. Using Google Earth Engine (GEE) and ArcGIS, we analyzed a suite of remote sensing data, including the 30-meter Shuttle Radar Topography Mission (SRTM) Digital Elevation Model (DEM), alongside PALSAR and RADARSAT sensors.To further characterize the ancient lake, we generated multiple topographic and slope swath profiles across north-to-south transects of the basin. These analyses are designed to constrain the shoreline and depth extent of the lake to facilitate future volumetric modeling. Because much of the northern basin lies beneath the Sahara Desert, radar sensors are being employed to reveal critical subsurface drainage systems overlooked by surface analyses alone. By integrating satellite topography and subsurface radar data, this research establishes a framework to reconstruct Megalake Chad's ancient capacity. Ultimately, quantifying this massive water loss will provide a deeper understanding of the region's paleoenvironmental shifts and the profound ecological consequences of a disappearing megalake.
