Hydrographic Survey in the Northern Dog and Duck Head

The Hydrographic Brigade conducted the hydrographic survey in Cachopo Norte and Cabeça do Pato, in Porto de Lisboa, between 22 and 26 March.

This work is part of the inter-administrative contract concluded between the IH and the Porto de Lisboa Administration, with the main objective of obtaining updated river information.

This survey was carried out on board the speedboats Trines and Zinc, equipped with a simple beam probe system, enabling an adequate characterization of the background.

Three hydrographers, one equipment maintenance technician and two boat owners participated in this mission. The mission had 58 hours of navigation and 42 hours of survey, traveling in this way, 284 km on spin and scanned an area of 3 km2.