The state of Saxony-Anhalt, represented by the State Office for Flood Protection and Water Management (LHW), plans to improve the hydromorphological state of the lower floor between Ditfurt and Rodersdorf to improve the hydromorphological state of the lower floor between Ditfurt and Rodersdorf, a reactivation of an old arm or used water between bodekilometer 81+000 and 86+000. The aim is to achieve the good ecological status in accordance with the EU WFD for the bode in this area. As part of a “feasibility study for connecting old arms of the Bode” (BIOTA 2011), possible old water was explored, prioritized and planned with preliminary measures. Pre-planning according to HOAI has already been carried out for four old waters (BIOTA 2012). Based on coordination between the LHW and the Lower Water and Nature Conservation Authority, it was decided that, in deviation from the previous planning, only connect the Altarm 1 as fully as possible. The state of old water 1 was recorded in July/August 2012 as part of the planning and can be summarized as follows: The old water is located within or immediately adjacent to the FFH area “Bode and Selke in the foreland of the Harz Mountains (4133-301)”. For this FFH area, preliminary protection and conservation targets have been in place for the entire area and for individual species since 2006 (LAU 2006). The section of the bottom with the old waters to be viewed is located above the confluence of the Bode with the Selke near the town of Wegeleben and has a catchment area of approx. 650 km². The structural quality of the Bode is classified as moderately to significantly changed GK (III to IV) in the investigation phase. However, the existing deficits in the flowing water structure represent clear deviations from the good state of affairs. There is therefore a need for action. There are no transverse structures directly in the relevant section of the floor. Ecological consistency must continue to be guaranteed. The relevant section of the soil (water body SAL17OW02-00) was assigned to LAWA type 9.1 (carbonatic, low mountain rivers rich in fine to coarse material). As a result of the morphological and chemical-physical deficits, the ecological potential was assessed as “moderate” in the context of the inventory in accordance with Article 5 of the Water Framework Directive (WFD 2000). The chemical status of the OWK was rated “good”.

The order is placed in 3 performance levels (LS). In LS 1, the basic analysis and preliminary planning of property planning engineering structures as well as for the landscape conservation accompanying plan as well as special and additional services are commissioned.

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In LS 2 (optional), design and approval planning as well as special and additional services, including the support of the approval process, are to be commissioned for the project planning of engineering structures and for the landscape conservation accompanying plan.

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After submission of the approval, LS 3 (optional) includes the commissioning of the construction planning engineering works for execution planning, preparation and participation in the award, site management as well as special and additional services.

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(Note: The detailed description of the services to be provided can be found in the award documents Part B Statement of Work.)