Case study:Restoring the River Doquette to its original bed
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This case study is pending approval by a RiverWiki administrator.
Location: none specified
Project overview
| Status | Complete |
|---|---|
| Project web site | |
| Themes | |
| Country | France |
| Main contact forename | Fabien |
| Main contact surname | Goulmy |
| Main contact user ID | |
| Contact organisation | Fédération de la Manche pour la pêche et la protection du milieu aquatique |
| Contact organisation web site | |
| Partner organisations | |
| This is a parent project encompassing the following projects |
No |
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Project summary
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Monitoring surveys and results
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Lessons learnt
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Catchment and subcatchment
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Catchment
| River basin district | Seine-Normandie |
|---|---|
| River basin | sienne |
Subcatchment
| River name | Doquette |
|---|---|
| Area category | |
| Area (km2) | |
| Maximum altitude category | |
| Maximum altitude (m) | |
| Dominant geology | |
| Ecoregion | Western Plains |
| Dominant land cover | agriculture, forest |
| Waterbody ID |
Site
| Name | Percy |
|---|---|
| WFD water body codes | I70490000 |
| WFD (national) typology | |
| WFD water body name | |
| Pre-project morphology | Straight |
| Reference morphology | Single channel, Sinuous |
| Desired post project morphology | |
| Heavily modified water body | true |
| National/international site designation | |
| Local/regional site designations | |
| Protected species present | |
| Invasive species present | |
| Species of interest | |
| Dominant hydrology | Quick run-off, Groundwater |
| Dominant substrate | Gravel |
| River corridor land use | Intensive agriculture |
| Average bankfull channel width category | 2 - 5 m |
| Average bankfull channel width (m) | 2.22.2 m <br />0.0022 km <br />220 cm <br /> |
| Average bankfull channel depth category | |
| Average bankfull channel depth (m) | |
| Mean discharge category | |
| Mean annual discharge (m3/s) | 0.050.05 m³/s <br />50 l/s <br /> |
| Average channel gradient category | |
| Average channel gradient | 0.0011 |
| Average unit stream power (W/m2) | 0.2451750.245 W/m² <br /> |
Project background
| Reach length directly affected (m) | 240 m0.24 km <br />24,000 cm <br /> |
|---|---|
| Project started | |
| Works started | 2008/10/01 |
| Works completed | 2008/10/01 |
| Project completed | |
| Total cost category | Less than 10 k€"Less than 10 k€" is not in the list (Less than 1 k€, 1 - 10 k€, 10 - 50 k€, 50 - 100 k€, 100 - 500 k€, 500 - 1000 k€, 1000 - 5000 k€, 5000 - 10000 k€, more than 10000 k€) of allowed values for the "Total cost category" property. |
| Total cost (k€) | 9 k€9,000 € <br /> |
| Benefit to cost ratio | |
| Funding sources | Water Agency, Regional Council, Fédération de la Manche pour la pêche et la protection du milieu aquatique |
Cost for project phases
| Phase | cost category | cost exact (k€) | Lead organisation | Contact forename | Contact surname |
|---|---|---|---|---|---|
| Investigation and design | |||||
| Stakeholder engagement and communication | |||||
| Works and works supervision | 1 - 10 k€ | 9 k€9,000 € <br /> | Fédération de la Manche pour la pêche et la protection du milieu aquatique | ||
| Post-project management and maintenance | |||||
| Monitoring |
Reasons for river restoration
| Mitigation of a pressure | |
|---|---|
| Hydromorphology | Structure & condition of riparian zones |
| Biology | |
| Physico-chemical | |
| Other reasons for the project |
Measures
Structural measures
| |
|---|---|
| Bank/bed modifications | Introducing sediment |
| Floodplain / River corridor | |
| Planform / Channel pattern | Re-instatement of old course, Re-instatement of sinuosity |
| Other | |
Non-structural measures
| |
| Management interventions | Promoting riparian vegetation |
| Social measures (incl. engagement) | |
| Other | |
Monitoring
Hydromorphological quality elements
| Element | When monitored | Type of monitoring | Control site used | Result | ||
|---|---|---|---|---|---|---|
| Before measures | After measures | Qualitative | Quantitative | |||
Biological quality elements
| Element | When monitored | Type of monitoring | Control site used | Result | ||
|---|---|---|---|---|---|---|
| Before measures | After measures | Qualitative | Quantitative | |||
Physico-chemical quality elements
| Element | When monitored | Type of monitoring | Control site used | Result | ||
|---|---|---|---|---|---|---|
| Before measures | After measures | Qualitative | Quantitative | |||
Any other monitoring, e.g. social, economic
| Element | When monitored | Type of monitoring | Control site used | Result | ||
|---|---|---|---|---|---|---|
| Before measures | After measures | Qualitative | Quantitative | |||
Monitoring documents
Image gallery
Additional documents and videos
Additional links and references
| Link | Description |
|---|