Hongrin

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Hongrin
The Hongrin in 1899

The Hongrin in 1899

Data
Water code CH : 236
location Canton of Friborg , Canton of Vaud ; Switzerland
River system Rhine
Drain over Saane  → Aare  → Rhine  → North Sea  → Veytaux power station  → Rhone  → Mediterranean
source in Lac Lioson , a mountain lake on the northwest slope of Châtillon
46 ° 23 ′ 15 ″  N , 7 ° 7 ′ 41 ″  E
Source height 1848  m above sea level M.
muzzle below Montbovon in the Saane dammed up to Lac de Lessoc Coordinates: 46 ° 29 ′ 41 ″  N , 7 ° 3 ′ 5 ″  E ; CH1903:  570 263  /  149 347 46 ° 29 '41 "  N , 7 ° 3' 5"  O
Mouth height 773  m above sea level M.
Height difference 1075 m
Bottom slope 54 ‰
length 19.9 km
Catchment area 81.77 km²
Discharge at the estuary
A Eo : 81.77 km² 		MQ
Mq
 		2.96 m³ / s
36.2 l / (s km²)

The Hongrin is an approximately 20 km long left tributary of the Saane ( French Sarine ) in the Swiss cantons of Vaud and Friborg . It drains a section of the Vaudois Alps and belongs to the catchment area of ​​the Rhine .

The river is first mentioned in 1294 as Ongrim , 1392 as Ongrin ; in the 18th century the term Longrin prevails . The name is derived from the Indo-European root enq- or onq- , which means "sigh" or "moan".

The headwaters of the Hongrin are located in the canton of Vaud on the municipality of Ormont-Dessous in the mountain area east of the Col des Mosses . The Hongrin flows from Lac Lioson , a mountain lake at 1,848  m above sea level. M. in a hollow on the northwest slope of the Châtillon . On the first kilometer, the mountain stream overcomes a difference in altitude of 350 m, then it turns to the northwest and reaches the wide, partly boggy valley furrow that is used by the pass road over the Col des Mosses.

At the village of La Lécherette , the Hongrin describes an arc and flows west into a valley basin, which is flanked in the north by the peaks of Planachaux and the Monts Chevreuils, in the south by Mont d'Or . It has been dammed here in the Lac de l'Hongrin since 1969 , the water surface of which is at 1255  m above sea level when it is fully dammed . M. lies. The lake reaches out into the valleys of its catchment area with various branches. The Petit Hongrin brook flows here from the southwest and rises in the area north of the Tour de Mayen .

The Hongrin Valley continues below the arch dam of the reservoir to the northwest, is very remote in this section and has only a few alpine houses. It is now deeply cut into the peaks of the Vaudois Alps and shows in rapid succession narrow points (hard limestone layers) and valley widths (softer marly or clayey rocks). To the northeast of the Rochers de Naye , the Hongrin crosses into the canton of Freiburg and turns north. It flows in a notched valley below Col de Jaman and Cape au Moine to the west and the Dent de Corjon to the east, until it reaches the Haute-Gruyère valley and below Montbovon at 774  m above sea level. M. flows into the Saane, which is dammed up here to the Lake of Lessoc . The section of the Montreux – Bernese Oberland Railway (MOB; French: Chemin de fer Montreux-Oberland Bernois ) runs through the lower Hongrin Valley between Montbovon and the Jaman Tunnel .

The Hongrin is characterized by a nival drainage regime . Almost the entire course of the Hongrin (with the exception of the area near the reservoir) has been preserved in its natural or near-natural state.

Individual evidence

  1. ↑ a b c Geoserver of the Swiss Federal Administration ( information )
  2. ↑ a b Modeled mean annual discharge. In: Topographical catchment areas of Swiss waters: sub-catchment areas 2 km². Retrieved August 11, 2017 .
  3. ↑ Noms de lieux de Suisse romande, Savoie et environs. Henry Suter, 2009, accessed May 15, 2013 (French).
  4. ↑ a b c National map of Switzerland , sheet 1265 Les Mosses, Swisstopo , Bern 2012.