Vorderrhein
| Vorderrhein Anterior Rhine | |
|---|---|
 The Vorderrhein in the Ruinaulta gorge | |
 Area of the Alpine Rhine with its headwaters | |
| Native name |
|
| Location | |
| Country | Switzerland |
| Canton | Canton of Graubünden |
| Physical characteristics | |
| Source | |
| • location | Lai Urlaun |
| • coordinates | 46°37′34″N 8°41′04″E / 46.62611°N 8.68444°E / 46.62611; 8.68444 |
| Mouth | |
• location | Reichenau |
• coordinates | 46°49′24″N 9°24′28″E / 46.82333°N 9.40778°E / 46.82333; 9.40778 |
• elevation | 585 m (1,919 ft) |
| Length | 76 km (47 mi) |
| Basin size | 1,512 km2 (584 sq mi) |
| Discharge | |
| • average | 53.8 m3/s (1,900 cu ft/s) |
| Basin features | |
| Progression | Rhine→ North Sea |
The Vorderrhein (German: [ˈfɔʁdɐˌʁaɪn] ⓘ; Sursilvan: ⓘ; Sutsilvan: Ragn Anteriur; Rumantsch Grischun, Vallader, and Puter: Rain Anteriur; Surmiran: Ragn anteriour; "Anterior Rhine") is one of the two sources of the Rhine. Its catchment area of 1,512 square kilometres (584 square miles) is located predominantly in the canton of Graubünden,Switzerland. The Vorderrhein is about 76 kilometres (47 mi) long, thus more than 5% longer than the Hinterrhein (each measured to the farthest source). The Vorderrhein, however, has an average water flow of 53.8 m3/s (1,900 cu ft/s), which is less than the flow of the Hinterrhein. According to the Atlas of Switzerland of the Swiss Federal Office of Topography,[1] the source of the Vorderrhein—and thus of the Rhine—is located north of the Rein da Tuma and Lake Toma.
Vorderrhein was also the name of a judicial district that was created in 1851 with the reorganization of the judiciary of Graubünden. In 2001, it was annexed by the District Surselva.
The largest communities along the Vorderrhein are Disentis and Ilanz.
Course
The Vorderrhein flows mostly in an east-northeast direction, through the Surselva, a large longitudinal valley. Its north side is steep, with short valleys; the southern side, however, is divided by some long valleys (similarly to the situation in the canton of Valais further west). Consequently, its main tributaries, the Rein da Sumvitg, the Glenner and the Rabiusa, all come from the south. In its lower course the Vorderrhein flows through the Flims Rockslide, giving rise to the canyon country of the Ruinaulta. Near Reichenau, it joins the Hinterrhein to form the (Alpine) Rhine.
Headwaters
Some of the tributaries of the Vorderrhein are almost as long as the main branch. In downstream order, they are (measuring their length from their respective sources to the confluence with Hinterrhein at Reichenau):
- Two unnamed streams originating in the Puozas and Milez areas near the Oberalppass
- Rein da Tuma, including the Lai da Tuma and the main head of the lake, about 71 kilometres (44 mi)
- The Aua da Val from the Val valley (70 km)
- Rein da Maighels (75 km) (tributary of the Rein da Curnera)
- Rein da Curnera (about 74 km)
- Rein da Nalps (about 71 km)
- Rein da Medel; the upper reaches in the canton of Ticino are known as the Reno di Medel, and also as the Froda (about 76 km)
Thus, the longer arms are not the source at Oberalppass, but further southeast. The longest headwater of the Vorderrhein (and thus the Rhine as a whole; see sources of the Rhine), is the Reno di Medel, which rises on the border of the municipality Quinto in Ticino. In the uppermost part of its course, it runs in the Val Cadlimo, south of the geomorphological main Alpine ridge, west of the Lukmanier Pass.
The high point of the Vorderrhein's drainage basin is the Piz Russein of the Tödi massif of the Glarus Alps at 3,613 metres (11,854 ft) above sea level. It starts with the creek Aua da Russein (lit.: "Water of the Russein").[2]
Tourism
Thanks to its attractive scenery and some interesting passages, the Vorderrhein is a popular river for paddling and rafting, especially the section between Ilanz and Versam.
Along entire length of the Vorderrhein there is a narrow-gauge railway line: from Chur to Disentis there is a line of the Rhätische Bahn, and from Disentis, the Furka-Oberalp line of the Matterhorn Gotthard Bahn runs to the Oberalp Pass and on to Andermatt. In the Ruinaulta area, the main road runs to the north of the river, and at its highest point, at Flims, it is about 480 metres (1,575 ft) above the Rhine.
The Senda Sursilvana, a hiking trail, leads from the Oberalp Pass along the Vorderrhein in the direction of Chur.[3]
Gallery
Footnotes
- ^ "Trial version of the Atlas of Switzerland with flashing rivers". Archived from the original on 2011-05-04. Retrieved 2011-04-23.
- ^ "1193 - Tödi" (Map). Piz Russein (2016 ed.). 1:25 000. National Map 1:25'000. Wabern, Switzerland: Federal Office of Topography – swisstopo. 2013. ISBN 978-3-302-01193-6. Retrieved 2018-02-28 – via map.geo.admin.ch.
- ^ Hiking Switzerland on the Senda Sursilvana in Graubünden
External links
- Natural Monument Ruinaulta
- flow description for water rides
