Renaturisation of the Moschelbach, Gehrweiler municipality, Donnersberg district
The water legislation authorisation plan in line with § 68 WHG involved the planning of a storm water retaining basin and the renaturisation of the Moschelbach in the immediate vicinity of Gehrweiler and directly adjacent to the federal highway L 388.
The measure provides a morphological upgrading of the Moschelbach in line with the European Water Framework Directive, as well as creating retention capacity for extreme storm events (flood relief). The planning was technically demanding due to a variety of complications arising from the position next to the L 388, including associated ditches, existing constructions and pipework. The project was completed within five months.
Services provided by igr
- Open-space planning
- Water legislation authorisation
- Environmental impact assessment – preliminary examination
- Landscape management supplementary plan
- Surface area surveying
- Coordination with all utility providers
- Traffic infrastructure planning
- On-site construction supervision
- Health and safety coordination
Key figures
- ca. 4,000 m³ earth moving for flood defence dam, retaining basin and water way modelling
- ca. 3 ha planning area
- Retaining basin for 2,200 m² (calculation basis: a 10-year rain event) with near-nature formed embankments (ca. 1 : 3)
- Renaturisation section 400 m with introduction of structural elements
- Dismantling of two culverts in the water bed
- Renovation and renewal of roads and access roads