In total, there are 63 critical areas on the mainland that are at risk of flooding, 47 of which are river-related and the remaining 16 coastal. We are talking about 103,000 people who may be at risk. In the Tagus and Western rivers region alone, the number exceeds 40,000.
Throughout Portugal, more and more buildings are being constructed in unsuitable locations, such as river floodplains. Another problem has been identified with several impermeable areas, i.e., areas where rainwater cannot infiltrate the soil when it reaches the earth's surface. However, there are solutions to this type of problem, such as the construction of more gardens or green spaces.
To reduce the effects of flooding, the government has decided to approve a set of management plans. In total, there are more than 600 measures that municipalities can use. Between 2022 and 2027, €200 million is expected to be spent on implementing these management plans. However, there are already regions that are aware that floods and inundations can pose various risks to the population. This is the case in Lisbon and Porto, which have already moved forward with plans. In the capital, the local authority has already moved forward with a general drainage plan, a project valued at around €250 million, with an implementation period of 15 years.
The plan includes the construction of retention basins, infiltration basins, and drainage trenches. It also includes the construction of two tunnels: one between Monsanto and Santa Apolónia and another between Chelas and Beato. In addition, there are plans to reinforce the sanitation network.
In the city of Porto, retention basins will be built in the Paulo Vallada garden and the garden's soccer field will be lowered. The local authority in the northern city also plans to rehabilitate the Granja stream. Both projects are expected to be completed in 2025.
Source: https://www.nowcanal.pt/
Nacionais