Nature Based Solutions - Implementation Models Database
Pioneer
Case
Flood retention basins of Lura river – Milan
A short description of the NBS project
Milan’s metropolitan region is affected by severe flooding during heavy rain events because of the high sealing rate of urban areas and increasing effects of climate change. Among several measures planned by the regional government there is a wide retention area that has been planned as flood control device, which also creates high quality natural areas and reconnects slow-mobility routes and recreational spaces inside the Lura Valley park. The project consists of the implementation of two rolling basins connected by an open air ditch and a pond filled with ground water. The basins will be temporarely flooded by Lura river during intense rainy periods through natural inlet from the river bed, whilst the pond will recharge constantly the ditch to maintain wetland vegetation all over the year to guarantee its phytodepuration functions. The balance of ground movements within the project is null as the volumes excavated are reused to create mounds and dikes. Wide areas of the river banks and plains have been upgraded through afforestation with native species.
The objective of the intervention is to renature and stabilize river banks through live staking and vegetated dikes, riparian afforestation, phytodepuration basins, zero-energy flood retention system (no pumping needed).
NBS Implementation context
Location
Italy, Milan
Latitude
45.6967
Longitude
9.03427
Status
Project delivered
Dates
2017.0
Description of the NBS
NBS Scale
city
NBS Impacts scale
regional
Urban density/ Soil consumption
low (suburb at the limit with rural areas, etc.)
Combined with other(s) environmental friendly solution(s)?
Project manager (leader and main partners): entities names, and know-how involved
Leader: Etatec - Studio Paoletti
Main partners: Land Italia
Who (else) was involved in the project ? (Inhabitants, local association, etc.)
More detail on the process and the role of the different stakeholders (How did it happen?)
NGOs, Local Entities
OPTIONAL Considering the actual impacts, who are the primary beneficiaries of the project.
Citizens
Cluster
Governance Model
Description
cluster1_traditional_public_administration
Participatory_planning_and_budgeting
Financing
Global Estimated cost of the project
more than 5M€
Cluster
cluster1_public_financing
FM
Description of the financing mechanism
Business Model
Class
Type
Description
Technological
Substitute with renewables and natural processes
Temporal Factor
Expected time for the NBS to be fully effective after its implementation
short (immediately to few months)
Expected life time of the intervention
more than 30
Already feedbacks on the project? In case, the project has already been adapted to new requisites, please explain the modifications brought
Success and limiting factors
Process Enablers
Class
Subclass
Type
Description
Knowledge_drivers
Awareness
NBS_ambassadors
The process benefit from the existing knowledge (from all the stakeholders) regarding NbS in cities and it was possible to generate the missing knowledge
Process Inhibitors
Class
Subclass
Type
Description
Knowledge_barriers
Uncertainty
Performance_unknow
The process suffer from the concerns of some of the stakeholders regarding the unknown consequences
What makes this project a pioneer?
Field
Design_or_techniques_employed
Criteria
Brief description of the innovativeness
Pilot project of wetland (reduction of hydraulic risk integrated with 1)
Has the project received a prize, an award?
Has the project received a media coverage? (in reviews, in press, etc.)
http://www.parks.it/parco.lura/Epar.php
IM Keywords
constructed wetland
floold management
References
Websites of conceptors:
http://www.parcolura.it/
http://www.etatec.it/
https://www.landsrl.com/
http://www.laminazionelura.it