Its variable water supply was evened out by an artificial ditch on the south side of the Hohneklippen, the Wormsgraben, built in the late 12th century.

During the early phase of construction in 1934 cult artefacts from around the turn of the eras (AD 0) were found.

From November 1998 to May 2000 the dam and waterworks were overhauled at a financial cost of 7 million deutsche marks.

Prior to the overhaul, the equipment in the valve house had to be set manually and measurements could only be made on the spot in the power station.

When the dam was first built, drainage channels were laid between the wall segments which had gradually disintegrated over time.

The forestry commission has also removed trees blocking the view of the southern side of the dam from the observation point at Peterstein (checkpoint 36 on the Harzer Wandernadel hiking network).

Trees that obscured the view were removed from the mountaintop during dam and reservoir renovation by the forestry commission.