Inn (river)

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File:Verlaufskarte Inn DE.png
Map highlighting the Inn River

The Inn (Script error: No such module "IPA".; Template:Langx;[1] Template:Langx) is a river in Switzerland, Austria and Germany. The Template:Convert long river is a right tributary of the Danube, being the third largest tributary of the Danube by discharge. The highest point of its drainage basin is the summit of Piz Bernina at Template:Convert. The Engadine, the valley of the En, is the only Swiss valley whose waters end up in the Black Sea (via the Danube).

Etymology

The name Inn is derived from the old Celtic words en and enios, meaning water. In a document of 1338, the river was named Wasser (German for water). The first written mention from the years 105 to 109 (Publii Corneli Taciti historiarium liber tertius) reads: "... Sextilius Felix... ad occupandam ripam Aeni fluminis, quod Raetos Noricosque interfluit, missus..." ("... Sextilius Felix was sent to capture the banks of the Inn, which flows between the Rhaetian people and the Noric people.")[2] The river is also mentioned by other authors of the Roman Empire as Ainos (Greek) or Aenus (Latin). In medieval Latin it was written as Enus or Oenus. The change in the old Bavarian language from e to i turned Enus to In. Until the 17th century, it was written like this or Yn, but also Ihn or Yhn. The double-n appeared only in the 16th century, for example in the Tyrolian Landreim of 1557, and since the 18th century this spelling and pronunciation with a short vowel has been customary.[3]

The mentions in Roman times refer to the lower course. The Tyrolean section was first called Aenus by Venantius Fortunatus in the 6th century. The name Engadin and the Romansh name En indicate that the upper reaches of the river have always been called this way.Script error: No such module "Unsubst". Even though it was occasionally believed that the Inn originated near the Adige at the Reschen Pass, since the 16th century at the latest the origin has been seen uniformly in the area of the lakes at the Maloja Pass.[3]

A connection may exist between the name Inn and the name of the French river Ain.[4]

Geography

The source of the Inn is located in the Swiss Alps, west of St. Moritz in the Engadine region, which is named after the river (Romansh Engiadina; Latin vallis Eniatina). Shortly after it leaves its source, the Inn flows through the largest lakes on its course, Lake Sils and Lake Silvaplana. It runs north-eastwards, entering Austria, and from Landeck eastwards through the Austrian state of Tyrol and its capital, Innsbruck (bridge over the Inn), and crosses the border into Bavaria near Kufstein.

On Bavarian territory the river runs northwards and passes Rosenheim, Wasserburg am Inn, and Waldkraiburg; then it turns east, runs through Mühldorf and Neuötting and is enlarged by two major tributaries, the Alz and the Salzach. From here to the Danube, it forms the border between Germany (Bavaria) and Austria (Upper Austria). Towns on this last section of the river are Marktl am Inn, Simbach on Inn, Braunau am Inn and Schärding.

In Passau the Inn finally enters the Danube (as does the river Ilz there). Although the Inn has a greater average flow than the Danube when they converge in Passau, and its watershed contains the Piz Bernina, the highest point in the Danube watershed, the Inn is considered a tributary of the Danube, which has a greater length, drains a larger surface area, and has a more consistent flow. The Inn is the only river originating in Switzerland that ends in the Black Sea (via the Danube).

Tributaries

File:W Inntal.JPG
View of the Lower Inn Valley. On the right is the entrance to the Ziller Valley.

Flow

The average discharge at the mouth of the Inn is Template:Cvt.Template:GeoSource

Average monthly flow (m³/s) of the Inn in Passau
Years 1921/2006[5]

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2013 flood

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File:MG 1230 (8935814428).jpg
The Old City of Passau during the flood
File:Passau Pegel Rathaus 8-6-2013.jpeg
Water level marks on the Town Hall in Passau

On 3 June 2013 the discharge of the Inn in Passau reached Template:Convert[5] and the water levels reached Template:Convert, the highest recorded historic flood level since 1501.[6] The historic centre of Passau, where the Danube, Inn and Ilz converge, was flooded severely.

Hydroelectric power plants

Currently, there are 24 hydroelectric power plants on the Inn. 17 of them are operated by Verbund AG.[7] The power plants are listed beginning at the headwaters:

Dam Nameplate capacity (MW) Annual generation (Mio. kwh)
Islas[8] 4.3 17
Ova Spin[9] 50 100
Pradella[10] 288 1,000
Martina 70 290
Imst[11] 89 550
Kirchbichl[12] 19.3 131
Langkampfen[13] 31.5 169
Oberaudorf-Ebbs 60 268
Nussdorf 48 245.8
Rosenheim 35 179.5
Feldkirchen 38 204
Wasserburg 29 165.7
Teufelsbruck 25 150.4
Gars 30 169.2
Jettenbach 6 30.2
Töging 85 564.6
Neuötting 26 159.4
Perach 19 128.4
Stammham 23 136.4
Braunau-Simbach 100 550
Ering-Frauenstein 72 434
Egglfing-Obernberg 84 485
Schärding-Neuhaus 96 541.8
Passau-Ingling 86 504.7

See also

References

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External links

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  1. ↑ Script error: No such module "citation/CS1".
  2. ↑ "Wolf-Armin Frhr. v. Reitzenstein: Lexikon bayerischer Ortsnamen. Herkunft und Bedeutung. C.H.Beck, Munich 2006
  3. ↑ a b Otto Stolz: Geschichtskunde der Gewässer Tirols. Schlern-Schriften, Band 32, Innsbruck 1932, S. 6–14 und 83–88 (Digitalisat)
  4. ↑ Arnaud Vendryes: L'Ain : le nom d'une rivière à travers les sources. In: Société d'Emulation du Jura, Travaux 2015, S. 147–168
  5. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named hnd
  6. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named in
  7. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named ve
  8. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named st
  9. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named en1
  10. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named en2
  11. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named ti1
  12. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named ti2
  13. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named ti3
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