The Granestausee dam is 62 meters high and 550 meters long at the crest.
It acts as a drinking water reservoir, meaning the water quality is strictly protected.
The reservoir has a total capacity of approximately 46 million cubic meters.
The dam is part of the integrated Harz water supply system, which manages water flow for the region.
The Harzer Wandernadel stamp box 110 is located near the dam wall along the main trail.
Granestausee HWN 110 is a reservoir in the Harz mountain range serving as a pivotal checkpoint for the Harzer Wandernadel hiking challenge. The site features a concrete gravity dam completed in 1969 to provide drinking water to the Goslar region. The reservoir occupies a deep valley, primarily fed by the Grane River. Visitors reach the stamp box by hiking along the perimeter trail that encircles the water. The area is strictly protected as a drinking water catchment zone, prohibiting swimming, boating, and fishing. The surrounding terrain is characterized by dense coniferous forest typical of the Upper Harz region.
The center of the dam crest provides a panoramic view of the reservoir and the surrounding forested hills.
Bring sufficient water as there are no kiosks or cafes directly at the stamp location.
Wear sturdy hiking boots, as the trails around the reservoir can be muddy after rainfall.
Check for tick presence in the tall grass and forest edges surrounding the lake.
Do not attempt to access the water's edge, as steep slopes and protected status make it difficult and illegal.
Strictly no swimming or water sports; stay on marked paths to protect the drinking water supply zone.
