Geokosmos, a Moscow-based air survey company, has completed a 3-D mapping project using up-to-date digital technologies in Andalusia, an autonomous region of Spain, for various municipal authorities.

Using the aerial laser-scanning technology, Geokosmos conducted a survey of the Guadalquivir River, aiming to create a 3-D digital-terrain model. The survey was conducted with up-to-date laser imaging detection and ranging (LiDAR) equipment (Optech Inc.'s ALTM 3100) and a medium-format digital camera (Rollei AIC modular LS). The total volume of work reached approximately 700 sq km (270 sq miles).

Stretching 3144 km (1954 miles), the Guadalquivir is one of the longest rivers on the territory of Spain and has a rather complicated surface. The conducted survey requested maximum attention, accuracy and professionalism.

The high-precision 3-D digital-elevation models of the river's channel will allow the customer to forecast the potential flood locations, plan preventive measures in case of flood, conduct shore protection and create GIS for water resources management.