# 3 | 360 ° flood protection
Protecting the Go Terminal at Copenhagen Airport
2770 Kastrup, Danemark
55.625488, 12.656029
| Hazard | Flash floods caused by torrential rain on the airport tarmac – Insufficient drainage capacity |
| Length deployed | 1 003 m |
| Equipment | 66 WL 2050 barriers in 2 rapid deployment boxes |
| Protection height | 50 cm |
| Deployment | 30′ |
| Assembly | Supported by 1 wall that runs along the length of the terminal |
| Location | Go Terminal / Copenhagen Airport |
Perimeter protection of up to 360°, covering several hundred metres (on flat ground). Water-Gate© mobile flexible dikes can be crossed by emergency vehicles in both directions up to mid-axle.
Mandelieu-la-Napoule: General Directorate of Technical Services | Flood protection
06210 Mandelieu-la-Napoule
43.555458, 6.947470
| Hazard | Overflow flooding in the Siagne valley following a Cevennes episode on the Tanneron massif. Easterly winds increase the risk of flooding by slowing the flow of the river towards the Gulf of Napoule. |
| Length deployed | 350 meters |
| Equipment | 23 flexible WL-3250 dikes pre-attached in 3 rapid deployment wooden boxes |
| Protection height | 81 cm |
| Deployment | 02H00 with 6 people |
| Assembly | 360 ° | The two ends rest on the Maréchal Lyautey bypass, known to be not flooded, to allow access to the technical center during the flood. |
| Location | Mandelieu-la-Napoule | Alpes-Maritimes | France |
Charenton-le-Pont: protection of 3 buildings and 3 underground car parks
94220 Charenton-le-pont
48.824920, 2.394017
| Hazard |
Centennial flood by overflow of the Seine river |
| Length deployed |
474 meters |
| Equipment |
35 sections of 7 to 15 meters pre-attached in 6 rapid deployment boxes |
| Protection height |
6 different heights up to 152cm |
| Deployment |
5 hours with 5 people |
| Assembly |
360 ° | East side the flexible dam rests against a watertight wall – West side the dam rests on a parapet raised by a specific device |
| Location |
Charenton-le-Pont | Val-de-Marne | France |
The system implemented
The risk of flooding due to the Seine overflowing is a slow-onset hazard (>24h), thus allowing for the installation of the protective devices identified in the prevention framework (vulnerability assessment).
After an initial study comparing different protection options (protection of individual buildings in sections vs. 360° perimeter protection), a decision was taken to follow the “semi-perimeter” scenario.
Read the full article: The 100-year flood: on the front line of flood risk
