Channelling water for a safer region

By controlling water flows and undertaking strategic construction works, the region of Valencia will soon have peace of mind during heavy rainfall, knowing that flood prevention measures have been taken.

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The flood protection works planned under this project include the construction of a dam, extensions to the present course of the Gallinera river basin and a collection of measures for better drainage, canalisation and water flow diversions.

Curbing the flow of threatening waters

Until now, the Spanish region of Valencia, notably the 57 000 or so residents from communities near the planned new infrastructure, has had to deal with the high economic and emotional cost of damage to private and public properties, and losses of revenues among local businesses, as a direct result of the flash flood phenomenon. The current project will be carried out in the Gallinera river basin, with the aim of putting an end to this destructive form of flooding, in turn bringing reassurance to the local region.

Network of channels enhances regional safety

The main works will take place in the river basin near the city of Oliva and will include the construction of a dam (the Oliva dam) designed to hold large amounts of storm rainfall and release this water downstream under controlled laminar flow conditions taking it to the Mediterranean. The works will also see the partial channelling of the Gallinera dry riverbed near the point it crosses with the N-332 highway such that it can handle the water released from the dam and direct it into the Mediterranean.

The new water network will also result in the Alfadalí river flow being diverted into the Gallinera. Additional smaller works include drainage of flash flooding from the Benirrama gulch into the Alfadalí river or Gallinera channel. The construction of a bridge and walkways will improve mobility for the people in these areas and further improve safety. General features of the project include the widening of certain channels and the building of retaining walls (in concrete and/or gabions, depending on the zone) along various stretches, including in urban zones.

Long-term boost for local jobs

In addition to greater protection for local populations and less risk of flood damage, there is the economic spin-off in terms of jobs. During the project’s implementation phase, 50 direct jobs (of average duration three years) will be created, another four jobs (of average duration 30 years) during the operational phase, bringing long-term gains to the region.


Draft date

07/02/2011