Natural Water Retention Measures

Constructed wetland with reed bed filters near Reims, France

General

National Id:

France_02

Site name:

Bezannes, near Reims

RBD code:

FRH

Transboundary:

0

Data provider:

Elia Desmot, OIEau

Source(s):

Green potential of a constructed wetland with reed bed filters on a 172 ha urban project near Reims (France). Project evolution analysis

Potentiel écologique d’un ouvrage de rétention et de filtration des eaux pluviales sur une opération de 172 hectares (Reims) ; analyse de la genèse du projet

NWRM(s) implemented in the case study:

Retention Ponds

Wetland restoration and management

Longitude:

3.989

Latitude:

49.222

Site information

Climate zone:

cool temperate moist

Mean rainfall:

618

Mean rainfall unit:

mm/year

Average temperature:

10

Type:

Modelled/Simulated Example

Light or indepth?:

Light

Monitoring maintenance

Monitoring impacts effects:

0

Performance

Performance impact estimation method:

Unknown

Biophysical impacts

Information on retained water:

15000m3 capacity in a constructed wetland

Water quality overall improvements:

N/A info

Information on Water quality overall improvements:

The wetland may have a beneficial effect on water quality

Soil quality overall soil improvements:

N/A info

Information on Soil quality overall soil improvements:

Biodiversity enhanced

Lessons, risks, implications...

Success factor(s):

Financing:

Barrier:

Driver:

Socio-economic

Ecosystem improved biodiversity:

1

Information on Ecosystem improved biodiversity:

No biodiversity involved

Ecosystem provisioning services:

1

Information on Ecosystem provisioning services:

Amenity space, improvement of water quality, increased water storage

Ecosystem impact climate regulation:

No specific impact

Information on Ecosystem impact climate regulation:

Not mentioned

Policy, general governance and design targets

Policy description:

Bezannes needed an area to store water from runoff to protect a new urban zone.

Policy pressure:

Policy requirement directive:

Policy impact:

Policy wider plan:

Policy area:

Policy target:

Target purpose
Runoff control
Increase Water Storage
Improved Biodiversity
Oher Societal Benefits

Design & implementations

Application scale:

City

Performance timescale:

< 1 year

Area (ha):

72

Design capacity description:

15000m3

Constraints:

At the beginning of the project, the storage was going to be a concrete water tank. A whole procedure of re-thinking had to be done.

Favourable preconditions:

The idea to change from concrete to natural water retention was supported by WFD conditions and the city management.

Design contractual arrangement:

Design consultation activity:

Design land use change:

Design authority:

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Last updated: 12 Jan 2015 | Top

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Constructed wetland with reed bed filters near Reims, France

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