( lb. Péitruss, French Pétrusse )
The renatured section of the Petruss shortly before its mouth
|Drain over||Alzette → Sauer → Moselle → Rhine → North Sea|
|source||In the corridor Aalheck
|muzzle||in the city of Luxembourg at Rue St. Ulric in the Alzette
|Height difference||approx. 49 m|
|Bottom slope||approx. 3.8 ‰|
|Catchment area||19.4 km²|
The Petruss (Luxembourgish Péitruss, French Pétrusse ) is a nearly thirteen kilometers long, western and left tributary of the Alzette . It flows on its lower reaches through the city of Luxembourg .
The name comes from the Latin adjective petresa 'stony' (from petra 'stone'), because the bed of Petruss used to be covered with it. In 1933 it was moved to a concrete channel; In recent times, the last 50 meters to its mouth have been renatured as a stony river bed in order to be able to recreate the historical impression.
On the eastern slope of the Dippecherbësch, a wooded elevation near Dippach , several spring streams arise at the same time, which soon flow together; with the inflow of the last, the Märelerbach, the Petruss then bears its name. The main hydrological strand rises at a height of 345 m.
The united Petruss first flows eastward through fields and meadows and then runs through the municipality of Bartringen . In Helfent it flows on the left side of the Aalbaach and immediately on the other side of the Grouf to.
It now crosses under the A 6 and then passes the municipal boundary from Bartringen to Luxembourg . It now runs along the southern edge of the Luxembourg district of Merl and then crosses the A 4 . At Hollerich , it is fed by the Zeissengerbach on the right side .
The Petruss now flows through the valley named after it and, after a little more than 12 kilometers, flows into the Alzette from the left in the Luxembourg district of Grund at an altitude of around 246 m .
- Aalbaach (left) , 1.9 km
- Grouf (right) , 6.7 km
- Zeissengerbach (right) , 7.4 km
The Petruss valley separates the upper town from the station district, which is also high up. The valley is spanned by two bridges, the Passerelle and the Adolphe Bridge , called "Al Bréck" (Old Bridge) and "Nei Bréck" (New Bridge) in the city. The Quirinus Chapel is located in the Petrus Valley .
- Course of the Petruss on the Geoportal Luxembourg - digital national map
- The Petrus Valley (PDF, 3.32 MB)