Purpose and scope of the procurement The main purpose of this procurement is to acquire new bathymetric riverbed data using Airborne Laser Scanning (ALS), Airborne Lidar Bathymetry (ALB), and simultaneous image capture. The data will be used in projects related to flood risk mapping, erosion assessment and the development of hydraulic models. The procurement shall ensure sufficient data quality and coverage to support these purposes. A detailed description of the scope and requirements is set out in Annex 6.1 Specification of Requirements.