Case study:Historic Mill Restoration Project

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Location: 54° 54' 46", 8° 50' 21"
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Project overview

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Status Complete
Project web site
Themes Economic aspects, Habitat and biodiversity, Social benefits
Country Denmark
Main contact forename Hans
Main contact surname Ole Hansen
Main contact user ID
Contact organisation
Contact organisation web site
Partner organisations
Parent multi-site project
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encompassing the following
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Area of the project

Project summary

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Reducing the risk of flooding, tackling subsidence and improving access for fish was dealt with by removing sluice gates and installing a weir allowing fish to swim over more easily. Retaining the historic mill and mill pond were central to the scheme. Economic, social and environmental benefits have been reported in a project that dealt sensitively with the cultural heritage at the site. Works: 1. The mill pond and river were separated with a sheet-piled, concrete-faced weir. Flood banks were set back to increase capacity for flood waters. 2. Sluice gates and the fish ladder upstream of the mill bridge were removed. The millpond was retained as a functioning nursery area for fish. 3. Downstream of the mill, spawning grounds were formed by creating areas of shallower water using gravel (riffles). Resting areas (backwaters) were created and an otter pass was built under the bridge. 4. A new access point downstream of the mill was made for the Tønder Rowing Club to minimise disturbance to nature. 5. 700m of wetlands was created downstream of Tønder to create a wider nature corridor. This has been very popular with walkers and local people. Benefits: Historic mill retained; Aesthetic improvements have led to an increase in local house prices; Public access to nature improved - wetland walk; Balanced project aims with recreational needs; Improved river habitat; Fish pass more freely past the mill; Passage for houting has been restored.

Monitoring surveys and results

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Lessons learnt

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• Taking into account the historic context of the site, the project was delivered sensitively. • The legacy of the project will benefit wildlife and people in a number of ways (access to nature, recreation).


Image gallery


Lateral sheet piling used to create the weir
Sheet piling faced with concret
The structure once vegetated
Cultural legacy: Historic Mill retained
Bachmanns Mill Pond - after restoration (1)
Bachmanns Mill Pond - after restoration (2)
Bachmanns Mill Pond - after restoration (3)
Bachmanns Mill pond - before restoration
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Catchment and subcatchment



Site

Name Bachmanns Water Mill (River Vida, Tonder)
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Heavily modified water body No
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Protected species present No
Invasive species present No
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Project background

Reach length directly affected (m)
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Project completed
Total cost category 1000 - 5000 k€
Total cost (k€) 1370
1,370 k€
1,370,000 €
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Cost for project phases

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Reasons for river restoration

Mitigation of a pressure
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Measures

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Monitoring

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Monitoring documents



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Supplementary Information

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