Water

The analysis of water has been carried out with particular reference to the large area potentially affected by the effects of the works on the land and the expected increase in airport traffic. The area consists of part of the Venice Lagoon’s transitional waters and of part of inland waters, limited to the last section of the hydrographical basin of the rivers Dese and Marzenego, with particular reference to the nearby drainage basins surrounding the airport (the Cattal and Campalto basins).

The Marco Polo airport is located by the lagoon in a low-lying area with low water vivacity and relatively long immobility times (10-20 days).

The mainland area around the airport, with mechanical drainage, belongs to the drainage basins associated with the Campalto water pump, which delivers water into the final section of the Osellino canal, and with the Cattal water pump, which delivers into the final section of the Dese river, both managed by the local water-management consortium Consorzio di Bonifica Acque Risorgive.

As the area is low-lying and undergoing continuously-expanding urbanization, it is highly vulnerable to flooding due to the insufficient efficiency of the reclamation canals, which are undersized with respect to the needs for conveying drainage of the water volumes that build up in the basins.

The main impacts that can be envisaged from implementing the Master Plan in relation to the operating phase regard safeguarding the waters surrounding the airport and the quality of the natural/artificial surface pools, rivers and canals into which waste and drainage waters flow from the airport area.

The works envisaged by the Water Master Plan produce positive effects as they contribute to the overall improvement of the drainage network of the surrounding areas while ensuring the airport's water safety.

By drawing up the Airport Water Master Plan, SAVE S.p.A. intends to launch the design of hydraulic works at the service of the airport area, with reference to the current situation and the future expansion scenarios foreseen in the General Master Plan, with the aim of:

  • providing the whole airport area with greater water safety than under current conditions, up to weather events characterized by return cycles of 100 years, also with reference to the hydraulic compatibility requirements of the works planned in the Master Plan with respect to the hydraulic conditions of the drainage basin downstream managed by the Consorzio Acque Risorgive;
  • achieving economic and environmental benefits through the optimization of drinking-water consumption, to be achieved through proposals for recycling of natural, meteoric or purified water;
  • adjust all rain waters (run-off waters from the aprons, roads and runways) to the current regulatory limits, and centralize their treatment and control systems as much as possible.

In the expected scenario, making suitable compensation volumes available within the airport grounds will ensure hydraulic invariance, with zero impact on the capacities of the land-reclamation system, while the series of hydraulic works within the airport grounds and in the land-reclamation system forecast by 2021 will generate an all-over improvement in the efficiency of the water drainage system and rain-waters run-off, with a positive effect for safeguarding the area's water system.

A further scenario regards the impact the higher water traffic to and from the airport - with related destructive wave motion - can have on the airport's dock area and the natural shores of the last section of the Lagoon access channel (Canale di Tessera). At a first approximation, destructive wave motion will grow proportionally with the number of passengers, resulting in a low negative effect which will become negligible when compared to the envisaged mitigations, which include the installation of speed reducers in the last section of the Canale di Tessera, the installation of energy-absorbing structures along the walls of the airport dock that will reduce the waves' destructive effect, and the recovery of part of the emerged shoals in the area, including protection works of the shores against the wave action. 

Water Master Plan: works related to the 2021 scenario 

 

Panoramica Investimenti - Estratto Bilancio di Sostenibilità 2016

Rapporto Censis

 

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