GIS is used in the water sector to map, analyze, and address issues through integrating geographical data with tabular records. Remote sensing involves detecting physical characteristics of an area from a distance, typically via satellite imagery. GIS integrates remote sensing data. GIS supports applications like watershed management through catchment delineation, extracting streams and mapping surface water bodies. It aids in irrigation planning, assessing water quality, and managing utilities, floods, and groundwater. The latest technologies applied to GIS in water resource management include 3D modeling, drone imagery, and satellite rainfall measurement.