Renaturation of the Kyll estuary Joint compensation for various infrastructure projects

Measures

The aim of the renaturation was to create the conditions for a self-dynamic further development of the area. To this end, the following measures were carried out:
- Connection of the oxbow lakes to the Kyll and Moselle and the creation of their passability through swales.
- Creation of flood channels and swales at different depths, in part down to below the water table with different widths and inclinations. The areas were neither seeded nor planted.
- Creation of diverse transition areas between water bodies and land. Large parts of the Moselle bank, which had been developed with a regular profile, were reshaped by excavation with shallow banks.
- Abandonment of agriculture throughout the estuary to develop riparian forests primarily by succession. Approximately 20 er areas designated for riparian forest development were planted with such riparian forest shrubs as are currently lacking in the area.
- To prevent neophytes (especially Japanese knotweed) from spreading too rapidly, existing stands in the area were excavated and removed from the area.
- Deconstruction of the agricultural road network in order to reduce disturbance and disturbance, especially by visitors with dogs running free.
- Further development of the area is to take place, especially through flood events, in that mass relocations (removal, application) then take place, resulting in further site differentiation. Differentiated goals regarding the development of fauna and flora were not defined; it is assumed that with the differentiation of the sites, plants and animals will also migrate again.
Maintenance or care work is almost completely omitted in the area, only a small extensive meadow at the edge of the area experiences a use.

Wiederanschluss eines Altarmes an die Kyll - Durch den Wiederanschluss der Altarme an die Kyll soll eine regelmäßige und frühzeitige Durchströmung dieser bei Hochwasser erreicht werden, um so deren Verlandung deutlich zu verlangsamen und eine naturgemäße Entwicklung zu gewährleisten. © 2008 BGHplan

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Gestaltung einer Flutrinne - Die Flutrinnen dienen zum einen der Verknüpfung der noch bestehenden Altarme und sollen die Durchströmung bei Hochwasser gewährleisten um eine dynamische Gewässerentwicklung einzuleiten und so die Voraussetzungen zu einer Erhöhung der auetypischen Vielfalt an Biotopstrukturen zu schaffen. Zum anderen wurde zur Entlastung der Kyll eine neue durchgängige Flutrinne geschaffen (siehe Foto). © 2008 BGHplan

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Geschwungene Mulde mit unterschiedlich steilen Böschungen - In den Mulden sollen Flachwasserbereiche und amphibische Lebensräume entstehen, die ganzjährig Wasser führen und bei Hochwasser durchströmt werden. © 2008 BGHplan

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Examples of selected locations

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Environmental Construction Monitoring

About 15 ha are already areas worthy of nature conservation and remained untouched, about 20 ha were newly developed. In order to avoid damage to existing stands and to ensure optimal implementation, BGHplan was commissioned with environmental construction monitoring. With a plan of measures for the construction phase with designation of taboo areas and determination of storage and access routes, the prerequisites for careful handling of the sensitive environment were created. Regular inspections and aerial surveys documented the construction progress and prevented environmental damage. A total of approx. 45,000 cbm of soil masses were taken up and transported to the deposition site in the connecting ear of the B 52 on the other side of the Moselle. In order to relieve the narrow through road of Ehrang from construction site traffic, the transport was carried out by ship across the Moselle.

Schmale Zufahrt durch einen Gehölzstreifen - Mittels Absperrungen und Schotterungen sollten die Eingriffe in die bereits vorhandenen zu schützenden Bereiche auf ein Minimum reduziert werden. © 2008 BGHplan

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Flood

Floods play a decisive role in the renaturation of the Kyll estuary. It is responsible for the self-dynamic development of the floodplain.

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Hochwasser im Januar 2011 - Im Vordergrund ist ein überschwemmter Auenbereich zu erkennen. Im mittleren Bereich verläuft die Kyll und im Hintergrund der oberste neu geschaffene Seitenarm. Blick vom Radweg aus nach Norden. © 2011 Reichert BGHplan

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Impressionen

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back to overview to the time shades

Measures
Examples of selected locations
Environmental Construction Monitoring
Flood
Impressionen