The hydropower plant of Contador exploits the potential of the Contador River through a high-head (approx. 500 meters) hydropower project and small nominal flow, compatible with the drainage area. Six intakes divert small streams at around elevation of 590 m to the main channel to feed the forebay (or headpond). A steel penstock of approx. 0.6 meter in diameter and 1500 m in length (having 477 meters nominal head) drives the water from this chamber to the powerhouse where two Pelton units of 1.1 MW each generate the power to supply the grid. The survey works will concern all works of the Contador SHP, covering a 10km corridor in the Contador River valley, with an average width of 50 m centred at the axis of the water conveyance works and roads, as well as six areas where specific works are located. The Consultant scope of services includes: topographic surveys of 6 intakes, the forebay, 8km of channel including 8 tunnels, 1,5km of penstock, the powerhouse, and 23 km of access roads. The total survey area is approximately 107 ha. World Bank contract.
Establishment of benchmarks along all the project area, execution of classic topographic surveys at 1/500 scale in the 6 intakes, on the forebay and powerhouse areas, execution of topographic surveys at scale 1/500 with TLS (terrestrial laser scanning) equipment along the channel, penstock and all the access roads, and execution of aerial lidar of all the surrounding area for at scale 1:1000.