Heinsen gravel excavation

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Heinsen gravel excavation
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Geographical location Holzminden district , Lower Saxony
Location close to the shore Heinsen
Data
Coordinates 51 ° 52 '30 "  N , 9 ° 27' 43"  E Coordinates: 51 ° 52 '30 "  N , 9 ° 27' 43"  E
Gravel excavation Heinsen (Lower Saxony)
Heinsen gravel excavation
Altitude above sea level f180.7
Maximum depth 5 m
Middle deep 3-5

particularities

Quarry pond , connected to the Weser by a channel

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The Kiesabgrabung Heinsen is a by gravel mining incurred lake in Lower Saxony municipality Heinsen in the district of Holzminden . The waters in the flood area of the Weser is one of four created by gravel mining lakes in southeast, of Heinsen former gravel mining area within the conservation area, "Wesertal" and the EU bird sanctuary "Solling foreshore". It is part of a Weser floodplain project , which aims to restore the natural diversity of the Upper Weser floodplain in parts of the Holzminden and Höxter districts through renaturation measures .

In the Heinsen gravel excavation, sand and gravel were mined from 1965 to 1975 . In July 1992, the Naturschutzbund Deutschland acquired the 13.2  hectare site with funds from the Frankfurt Zoological Society and the Federal Agency for Nature Conservation .

The lake was connected to the Weser in September 1993 by a channel. In the course of the work, some sections of the bank were flattened and designed. When the Weser water level is around 1.2 meters above the mean water line, water from the Weser flows through the channel into the lake. As a result, the former gravel excavation is flooded more frequently when the Weser floods, which leads to an ecological exchange between the two bodies of water.

The lake has shallow water and steep bank areas as well as gravel banks. It is left to its natural succession with the bank areas in which there are also dry and poor locations and which are predominantly made up of trees . Since the lake is not used and the bank area is not allowed to be entered, the bank, floating leaf and underwater vegetation could develop naturally. The lake is now an important habitat for young fish. Numerous types of dragonflies have settled. The area is also a breeding, resting and feeding habitat for numerous birds . In the winter months it is a resting area for waders and water birds .

In December 2001 an observation hut was built at the lake, which was inaugurated at the beginning of March 2002.

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