Colombia to Get Its First Locks

During La Niña in December 2010, the banks along the Canal del Dique burst, flooding dozens of villages, rendering almost 100,000 people homeless and destroying crops and important infrastructure.

The Government of Colombia wanted to address flooding and negative environmental impacts around the Canal del Dique, a 400-year old, 114 km-long navigation route connecting Cartagena Bay to the Magdalena River near Calamar in northern Colombia.

It appointed Dutch engineering consultancy Royal HaskoningDHV to design an integral solution. The design includes the construction of the country’s first two navigation locks.

Edgar Ortiz Pabón, Manager of the Adaptation Fund, said “The Canal del Dique macro-project is a strategically important project and the execution of the second Phase will definitively restore this ecoregion. Royal HaskoningDHV’s solution reduces inflow of water and sediment into the Canal del Dique and manages water levels to ensure flood safety, while significantly improving and restoring deteriorated ecosystems.

Through comprehensive analysis of the natural system and its functions, Royal HaskoningDHV developed 1D, 2D and 3D models to simulate hydraulics, water quality, sediment transport and morphological changes in the project area.

To build these numerical models, new data was collected by bathymetric surveys (total 1,350km) and topographic surveys using LIDAR (project area 1,920km2). To optimize these numerical models, hydro-sedimentological measurements were carried out including extensive measurement to determine discharges, sediment concentrations, salinity intrusion and several water quality parameters under different hydrological conditions.

Following an extensive baseline study including other technical, environmental and social studies covering all villages and ecosystems, several solution strategies were proposed.

FIRST NAVIGATION LOCKS IN COLOMBIA

The approved solution consists of a 250-meter-long navigation lock and a 60-meter-wide inlet structure at Calamar to reduce and control the inflow of water and sediments into Canal del Dique, resulting in flood protection for the complete system.

Additionally, closure of the Canal del Dique itself at Puerto Badel will restore the ecological system in the bay of Cartagena. A second lock will maintain navigation between Magdalena River and Cartagena harbor.

These first two navigation locks for Colombia are complemented by other hydraulic works like new dikes, inlets, outlets, reinforcements of existing protection levees and road infrastructure.

All these works, together with a predefined operational water management plan, will restore valuable and complex ecosystems of lakes, swamps, mangroves and wetlands while protecting all villages against floods. The pre-construction phase of the project is due to begin in June 2019.

 

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