Case study:Ecological reconstruction of islands resulted after Sf. Gheorghe Arm rectification - project 3

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Location: 44° 57' 38", 29° 27' 53"
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Project overview

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Status Complete
Project web site
Themes Habitat and biodiversity
Country Romania
Main contact forename Eugenia
Main contact surname Cioaca
Main contact user ID
Contact organisation Danube Delta National Institute for Research and Development, Tulcea
Contact organisation web site http://www.ddni.ro
Partner organisations
Parent multi-site project
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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Catchment and subcatchment

Catchment

River basin district Danube
River basin Danube

Subcatchment

River name Sf. Gheorghe Branch
Area category more than 10000 km²
Area (km2)
Maximum altitude category Less than 100 m
Maximum altitude (m) 0.5 m
5.0e-4 km
50 cm
Dominant geology Organic (i.e. Peat)
Ecoregion Pontic Province
Dominant land cover Wetland
Waterbody ID



Other case studies in this subcatchment: Ecological reconstruction of islands resulted after Sf. Gheorghe Arm rectification - project 1, Ecological reconstruction of islands resulted after Sf. Gheorghe Arm rectification - project 2, The Holbina-Dunavat Restoration Project


Site

Name Ivancea Island
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology Closed culvert
Reference morphology Groundwater dominated
Desired post project morphology
Heavily modified water body
National/international site designation
Local/regional site designations World Hertiage Site
Protected species present
Invasive species present
Species of interest
Dominant hydrology Artificially regulated
Dominant substrate Clay
River corridor land use Wetland
Average bankfull channel width category 5 - 10 m
Average bankfull channel width (m) 10
10 m
0.01 km
1,000 cm
Average bankfull channel depth category 0.5 - 2 m
Average bankfull channel depth (m) 2 m
0.002 km
200 cm
Mean discharge category
Mean annual discharge (m3/s) 2
2 m³/s
2,000 l/s
Average channel gradient category
Average channel gradient 0.015
Average unit stream power (W/m2) 29.421
29.421 W/m²


Project background

Reach length directly affected (m) 810 m
0.81 km
81,000 cm
Project started 2006/01/01
Works started 2007/08/01
Works completed 2007/10/01
Project completed
Total cost category 100 - 500 k€
Total cost (k€)
Benefit to cost ratio
Funding sources Environment Ministry, Environment and Water Management Ministry

Cost for project phases

Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname
Investigation and design 50 - 100 k€ Danube Delta National Institute Dan David
Stakeholder engagement and communication Tulcea Forestry Administration Radu Vasile
Works and works supervision Danube Delta National Institute Dan David
Post-project management and maintenance Tulcea Forestry Administration Radu Vasile
Monitoring 100 - 500 k€ 300 k€
300,000 €
Danube Delta National Institute, Tulcea Eugenia Cioaca



Reasons for river restoration

Mitigation of a pressure
Hydromorphology Quantity & dynamics of flow
Biology Fish: Disturbance-sensitive species
Physico-chemical Nutrient concentrations
Other reasons for the project Community demand


Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor
Planform / Channel pattern Canals to improve the hydrologic regime
Other
Non-structural measures
Management interventions
Social measures (incl. engagement) Improved public access
Other Information provision


Monitoring

Hydromorphological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative
Quantity & dynamics of flow Improvement

Biological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative
Fish: Species composition Improvement

Physico-chemical quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative
Nutrient concentrations Yes Improvement

Any other monitoring, e.g. social, economic

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative
Public awareness of fish catching Improvement


Monitoring documents



Additional documents and videos


Additional links and references

Link Description
http://www.ddni.ro The site of the Danube Delta National Institute for Research and Development (DDNIRD)

Supplementary Information

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