Rienz

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Rienz
The Rienza near Chienes

The Rienza near Chienes

Data
location South Tyrol , Italy
River system Etsch
Drain over Eisack  → Etsch  → Adriatic Sea
source At the foot of the Three Peaks
46 ° 38 ′ 3 "  N , 12 ° 17 ′ 54"  E
Source height 2180  m slm
muzzle At Brixen in the Eisack Coordinates: 46 ° 42 '48 "  N , 11 ° 39' 39"  E 46 ° 42 '48 "  N , 11 ° 39' 39"  E
Mouth height 550  m slm
Height difference 1630 m
Bottom slope 20 ‰
length 80.9 km
Catchment area 2143 km²
Discharge  at the mouth
A Eo : 2143 km² 		MQ
Mq
 		42.8 m³ / s
20 l / (s km²)
Left tributaries Pragser Bach , Furkelbach , Gader , Lasanke
Right tributaries Silvesterbach , Gsieser Bach , Antholzer Bach , Ahr , Wielenbach , Pfunderer Bach , Valser Bach
Flowing lakes Lake Dobbiaco
Reservoirs flowed through Olanger reservoir , Mühlbach reservoir
Medium-sized cities Brixen
Small towns Toblach , Bruneck
The mouth of the Gader and the Rienza from a bird's eye view (2018)

The Rienz ([ ˈriˑɛnts ]; Italian Rienza ) is a river in South Tyrol , Italy . It rises at the foot of the Drei Zinnen at an altitude of 2180  m . First it crosses protected areas in its upper reaches in the Drei Zinnen nature park and in the Fanes-Sennes-Braies nature park , namely the short Rienz valley and then the Höhlenstein valley . At Toblacher Feld it turns into the Pustertal , which it then flows through in a westerly direction, to flow into the Eisack after 80.9 km at an altitude of 550  m near Brixen . Due to the large catchment area of over 2,143 km², it forms the most important water feeder of the Eisack and also exceeds this in terms of water flow (42.7 m³ / s compared to 29.9 m³ / s at the mouth).

The course of the river is still referred to as Pirra in early medieval sources, together with its main tributary Ahr , for example in a document from King Arnulf in the late 9th century (893) . The old name only came off in the 11th century or was replaced by the name Rienz , which originally only named the upper reaches of the river.

Today, the Rienza is almost entirely used by diversions and dams for the electricity industry (for example at the Olanger reservoir or the Mühlbach reservoir ). As a result of this, and due to extensive construction, their floods, which were dangerous up to the 20th century, are no longer a problem. In contrast to the relatively densely populated and agriculturally more heavily used upper and middle reaches, the lowest valley section is from Mühlbach . There the Rienz breaks through a deeply cut forest gorge to the Eisack . Apart from the river ecology impaired by artificial water level fluctuations, this section of the Rienza is in a natural state. The Rienza Gorge is crossed by hiking trails and is popular with white water enthusiasts.

The most important tributaries to the Rienza are:

Web links

Commons : Rienz  - collection of images, videos and audio files
  • Rienz on the website of the South Tyrolean Environment Agency

Individual evidence

  1. ↑ a b Autonomous Province of Bolzano - South Tyrol, Section 30 Water Protection Structures : Area Fluviale Media Valle Isarco. Ambience fiume . Il progetto CittàPaeseFiume (2009-2011), accessed September 12, 2016
  2. ↑ Reference " ad fluvium Pirra nuncupatum ": Martin Bitschnau , Hannes Obermair : Tiroler Urkundenbuch, II. Section: The documents on the history of the Inn, Eisack and Pustertal valleys. Vol. 1: Up to the year 1140 . Universitätsverlag Wagner, Innsbruck 2009, ISBN 978-3-7030-0469-8 , p. 81-84 No. 112 .
  3. ^ Egon Kühebacher : The place names of South Tyrol and their history. Vol. 2. Bozen: Athesia 1995, ISBN 88-7014-827-0 , pp. 264-265.
  4. ↑ Through the Rienz Gorge to Rodeneck (accessed June 25, 2016)
  5. ↑ The Rienza on the wild water portal 4-Paddlers ( Memento of the original from February 13, 2018 in the Internet Archive ) Info: The @1@ 2Template: Webachiv / IABot / 4-paddlers.com archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (accessed June 25, 2016)