Hennesee

Hennesee
Name	Hennesee
Location	North Rhine-Westphalia, Germany
Type	Reservoir
Inflow	Henne (Möhne)
Outflow	Henne (Möhne)
Basin countries	Germany

Hennesee Hennesee is a reservoir in North Rhine-Westphalia, Germany formed by damming the Henne (Möhne) river. The reservoir functions as a multipurpose impoundment for flood control, water supply, and recreation within the Hochsauerlandkreis and near the Arnsberg Forest Nature Park. It is managed within regional water resource frameworks involving authorities such as the State of North Rhine-Westphalia administration and local municipal bodies.

Geography and Location

The reservoir lies in the Sauerland uplands near towns including Meschede, Arnsberg, Olsberg, and Bestwig, positioned within the Arnsberg (region) of North Rhine-Westphalia. Surrounding protected and notable landscapes include the Arnsberg Forest Nature Park, Sauerland Rothaargebirge, and the Ruhr River catchment boundary that connects via regional tributaries like the Möhne Reservoir. Access corridors link to transport nodes such as the Bundesautobahn 46, Bundesstraßen, and regional rail served by stations in Bestwig station and Meschede station.

History and Construction

Planning and construction phases occurred in the 20th century under engineering authorities influenced by precedents like the Möhne Reservoir and projects associated with the Ruhrgebiet water management initiatives. Design and civil works involved firms and institutions comparable to Deutsche Bahn infrastructure planners and state hydraulic engineering departments within North Rhine-Westphalia. The project timeline intersected with regional development policies promoted by entities such as the Prussian Ministry of Public Works historically and later by state ministries after German reunification. Construction techniques echoed practices used at contemporaneous dams like the Edersee and incorporated spillway and sluice systems aligned with standards from European dam safety legislation and engineering societies such as the Bundesanstalt für Wasserbau.

Hydrology and Reservoir Management

Hydrological inputs derive from the Henne (Möhne) and other local catchment streams, linking runoff regimes to precipitation patterns influenced by the Rothaargebirge and regional climate systems monitored by the Deutscher Wetterdienst. Management balances flood attenuation, regulated discharge to downstream nodes like the Möhne Reservoir and the Ruhr River catchment, and potable water provision coordinated with municipal suppliers in Meschede and surrounding towns. Operational control involves instrumentation and protocols comparable to those from the European Water Framework Directive implementation administered by the State Agency for Nature, Environment and Consumer Protection North Rhine-Westphalia.

Ecology and Environment

The reservoir and its riparian zones host habitats for species recorded in regional conservation surveys conducted by organizations such as the NABU and the Bund für Umwelt und Naturschutz Deutschland. Vegetation mosaics include mixed temperate forests typical of the Sauerland with faunal assemblages featuring species documented in inventories related to the Arnsberg Forest Nature Park. Environmental monitoring addresses issues parallel to those at the Biggesee and Möhne Reservoir including water quality, eutrophication risk, and fish populations managed under regulations from the Fischereiverband Nordrhein-Westfalen.

Recreation and Tourism

Recreational uses mirror regional lake destinations like the Biggesee and attract visitors from urban centers such as Dortmund, Bochum, Essen, and Düsseldorf. Activities include angling regulated by local angling clubs affiliated with the Landesfischereiverband Nordrhein-Westfalen, boating subject to navigation rules overseen by municipal authorities, and trails connected to long-distance hiking routes that link with networks promoted by the Deutscher Wanderverband. Proximity to cultural sites in Meschede and Arnsberg supports integrated tourism offers combining nature, gastronomy, and events.

Economic and Social Impact

The reservoir contributes to local economies through tourism, water supply for municipalities including Meschede and Bestwig, and employment in outdoor recreation services and municipal water operations. Regional planning authorities such as the Hochsauerlandkreis administration consider the reservoir in land-use strategies, linking benefits to nearby industrial and service centers in the Ruhrgebiet while coordinating with transport planners from entities like Deutsche Bahn and state road authorities. Socially, the site provides community amenities used by local clubs and schools coordinated with cultural institutions in Arnsberg and environmental education programs run by groups such as the Landschaftsverband Westfalen-Lippe.

Infrastructure and Access

Infrastructure comprises the dam structure with spillway systems engineered to standards akin to those implemented at Edersee and instrumentation for hydrological monitoring tied to the Deutscher Wetterdienst and state agencies. Road access connects via Bundesautobahn 46 corridors and regional roads to rail links at Meschede station and Bestwig station, and facilities include parking, boat launches, and visitor amenities managed by municipal authorities and local tourist offices such as those in Meschede and Arnsberg. Emergency and maintenance coordination aligns with regional services including the Feuerwehr units and district administrations.

Category:Reservoirs in North Rhine-Westphalia