River surveys are commissioned for a number of applications including the construction of bridges, design of erosion protection and flood risk analysis. This type of work involves surveying of the river banks (top and bottom), riverbed, water levels, flood plains and surrounding topography. The survey information can be presented as a 3d digital terrain model and cross sections through the river can be generated. An accompanying spreadsheet file of coordinated points with chainage along each section can also be produced. If required, this type of survey can be carried out to the Environment Agency Specification.