Blick auf Dreilägerbachtalsperre

The first of the many dams that we encounter on the Eifelsteig. From the small rest area above you have a beautiful view of the dam and lake. Unfortunately, the dam cannot be entered.

The Dreilägerbach dam, which was built between 1909 and 1911, is located between Roetgen and Rott. The reservoir behind the 38 meter high and 240 meter long dam has a capacity of 4.25 million cubic meters. An undisturbed hike around the drinking water dam is particularly attractive in the southern area. On the surrounding hiking parking lots you will find hiking boards and signposted circular hiking trails. eifel.info/a-dreilaegerbachtalsperre

The Dreilägerbachtalsperre is located in Roetgen in the Aachen region in the northern Eifel. It was built for the purpose of drinking water supply and is operated by the water extraction and processing company Nordeifel mbH, a 50 percent subsidiary of enwor-energie & wasser vor Ort GmbH and a 50 percent subsidiary of Stadtwerke Aachen.

"... The dam wall of the dam was built from 1909 to 1911 (or 1912) according to the Intze principle. The gravity dam consists mainly of rammed concrete; the upper area (about 6 m) was made of quartzite rubble There are no vertical joints in the wall. Originally there was a wedge-shaped earth fill (Intze wedge) on the water side. The upper half of the wall was provided with a seal, which was protected with a facing. (This and the information in the The table partly still refers to the old wall before the renovation.
The wall was renovated between 1990 and 1993. She got an inspection walk on the water side and a facing. The wall was also widened and the volume of the wall increased ... "
eifelfuehrer.de/touristische-ziel/stauseen/dreilaegerbachtalsperre

The Dreilägerbach dam, which was built between 1909 and 1911, is located between Roetgen and Rott. The reservoir behind the 38 meter high and 240 meter long dam has a capacity of 4.25 million cubic meters.

The dam of the dam was built from 1909 to 1911 (or 1912) according to the Intze principle. The gravity dam consists for the most part of stamped concrete; the upper area (about 6 m) was made of quartzite quarry stones. There are no vertical joints in the wall. On the water side was originally a wedge-shaped Erd-Vorschüttung (Intze wedge). The upper half of the wall was provided with a seal, which was protected by a veneer. Laterally a wing dam is arranged. In the years 1990 to 1993, the wall was renovated. She got a check on the water side and an attachment shell. The wall was also widened and the wall volume increased.

The Dreilägerbachtalsperre is a drinking water reservoir for Aachen.

"... The Dreilägerbachtalsperre is located in Roetgen near Aachen in the northern Eifel it serves the waterworks of the Aachen district for drinking water supply ..."
seen.de/dreilaegerbachtalsperre

I can only agree with @Bernd. The descent is particularly slippery when wet, people with knee problems should use an alternative descent.

The Dreilägerbach dam, which was built between 1909 and 1911, is located between Roetgen and Rott. The reservoir behind the 38 meter high and 240 meter long dam has a capacity of 4.25 million cubic meters.

At the foot of the dam, the water extraction and processing company Nordeifel mbH (WAG) operates a treatment plant that processes the water from the dam system in the northern Eifel and feeds it as drinking water into the pipeline network of the STAWAG (city of Aachen) and enwor (district of Aachen and district of Heinsberg) pumps. A large part of the city and the district of Aachen as well as the district of Heinsberg are supplied with drinking water from here.
In order to secure the water supply, the Dreilägerbachtalsperre is connected to the Kalltalsperre and the Rurtalsperre via tunnels. Source: eifelfuehrer.de/touristische-ziel/stauseen/dreilaegerbachtalsperre

Imposing wall of the Dreilägerbachtalsperre. The terrain is completely fenced and the dam is unfortunately not walkable.

Very nice view from platform. Part of the first stage of the Eifelsteig.

A really nice view of the Dreilägerbachtalsperre ..

Beautiful view of the Dreilägerbachtalsperre

Too bad that you can not go on it, but only from the top of a glance.

"... The dam wall of the dam was built from 1909 to 1911 (or 1912) according to the Intze principle. The gravity dam consists mainly of rammed concrete; the upper area (about 6 m) was made of quartzite rubble There are no vertical joints in the wall. Originally there was a wedge-shaped earth fill (Intze wedge) on the water side. The upper half of the wall was provided with a seal, which was protected with a facing. (This and the information in the The table partly still refers to the old wall before the renovation.
The wall was renovated between 1990 and 1993. She got an inspection walk on the water side and a facing. The wall was also widened and the volume of the wall increased ... "
eifelfuehrer.de/touristische-ziel/stauseen/dreilaegerbachtalsperre

Is completely cordoned off and fenced to protect drinking water

Then it goes down steeply

Nice view of the Dreilägerbachtalsperre.

You get a great view of the reservoir here in almost any weather.

You can walk around this dam from many directions. All paths are signposted but you will find something with Komoot Kom

And also the back of the wall. If you know that there are millions of liters of water behind it and press.

The first dam on the Eifelsteig. More will follow in the course of the hike to Trier.