Case study:Černý potok stream restoration scheme

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Location: 50° 44' 3.81" N, 13° 53' 29.49" E

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Project overview

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Status	Complete
Project web site
Themes	Flood risk management, Habitat and biodiversity, Hydromorphology, Spatial planning, Water quality
Country	Czech Republic
Main contact forename	Rous
Main contact surname	Vít
Main contact user ID	User:VRous
Contact organisation	Nature Conservation Agency of the Czech Republic
Contact organisation web site	http://www.ochranaprirody.cz
Partner organisations	Terén Design Ltd - www.terendesign.cz, Grania Ltd - www.grania.cz
Parent multi-site project
This is a parent project encompassing the following projects	No

Centra part of the stream restoration

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	River Elbe
River basin	River Elbe

Subcatchment

River name	Müglitz
Area category	100 - 1000 km²
Area (km2)
Maximum altitude category	500 - 1000 m
Maximum altitude (m)
Dominant geology
Ecoregion
Dominant land cover
Waterbody ID

Site

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Name	National Reserve Black Meadow
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology	Over deepened, Straightened, Artificial bed
Reference morphology	Actively meandering, Pool-riffle
Desired post project morphology
Heavily modified water body	Yes
National/international site designation	International - RAMSAR site
Local/regional site designations	National Reserve
Protected species present	Yes
Invasive species present	No
Species of interest	Menyanthes trifoliata, Pinguicula vulgaris
Dominant hydrology	Groundwater
Dominant substrate	Earth
River corridor land use	Grassland, Wetland
Average bankfull channel width category	Less than 2 m
Average bankfull channel width (m)	0.80.8 m <br />8.0e-4 km <br />80 cm <br />
Average bankfull channel depth category	Less than 0.5 m
Average bankfull channel depth (m)	0.30.3 m <br />3.0e-4 km <br />30 cm <br />
Mean discharge category	Less than 0.1 m³/s
Mean annual discharge (m3/s)	0.060.06 m³/s <br />60 l/s <br />
Average channel gradient category	0.01 - 0.1
Average channel gradient	0.025
Average unit stream power (W/m2)	18.38812518.388 W/m² <br />

Project background

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Reach length directly affected (m)	40004,000 m <br />4 km <br />400,000 cm <br />
Project started	2006/02/01
Works started	2009/08/01
Works completed	2010/11/30
Project completed	2010/11/30
Total cost category	100 - 500 k€
Total cost (k€)	264264 k€ <br />264,000 € <br />
Benefit to cost ratio
Funding sources	90% covered by EU - Operational Programme Environment

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
Post-project management and maintenance
Monitoring

Reasons for river restoration

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Mitigation of a pressure	Land drainage
Hydromorphology	Width & depth variation, Channel pattern/planform, Flow velocities
Biology	Macrophytes, Invertebrates
Physico-chemical
Other reasons for the project	Landscape enhancement

Measures

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Structural measures
Bank/bed modifications	construction of nearly completly new streambeds and directing water freely to the alluvial meadows
Floodplain / River corridor	Creation of ponds by partially filling up the deepend and streightend channel
Planform / Channel pattern	Allow future natural channel changes to occur
Other	Recovering natural landscapes
Non-structural measures
Management interventions	Management of vegetation, More natural water retention, monitoring
Social measures (incl. engagement)
Other	popularization of the project

Monitoring

Hydromorphological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Biological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Physico-chemical quality elements

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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

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Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Monitoring documents

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Image gallery

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excavation of the new channel

excavation site

filling up the small "dams" in the deepened channel

winter higher flow

Additional documents and videos

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Additional links and references

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Link	Description

Supplementary Information

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