Glyssibach

from Wikipedia, the free encyclopedia
Glyssibach
The Glyssibach after the storm in 2005

The Glyssibach after the storm in 2005

Data
Water code CH : 1855
location Western alps

Switzerland

River system Rhine
Drain over Aare  → Rhine  → North Sea
source at the Brienzer Rothorn
46 ° 46 '35 "  N , 8 ° 2' 30"  E
Source height approx.  1450  m above sea level M.
muzzle at the Brienz parish hall in Lake Brienz Coordinates: 46 ° 45 ′ 9 ″  N , 8 ° 2 ′ 41 ″  E ; CH1903:  646 315  /  178115 46 ° 45 '9 "  N , 8 ° 2' 41"  O
Mouth height approx.  564  m above sea level M.
Height difference approx. 886 m
Bottom slope approx. 30%
length 3 km
Catchment area 1.99 km²
The Glyssibach flows into Lake Brienz near Brienz after the Alpine floods in 2005.

The Glyssibach flows into Lake Brienz near Brienz after the Alpine floods in 2005 .

The Glyssibach is a torrent in Brienz ( Switzerland ) and a right tributary of Lake Brienz . It is known for the fact that it can rise very sharply in a short period of time because it has its source in a rocky area and the bottom does not absorb the water well.

geography

course

The Glyssibach rises in the rock massif of the Brienzer Rothorn and initially overcomes a significant difference in altitude. Then it flows through the Brienz Forest , shortly before the village it comes to a large bed load collector , which is supposed to protect the village from massive flood damage like in 2005. It flows further south-east towards the village, then it turns off towards south-south-west and flows the last section in the developed, new creek bed towards the lake. It finally flows into Lake Brienz with a delta at the location of the town hall of Brienz.

Catchment area

The catchment area of ​​the Glyssibach is 1.99 km² and consists of 46.4% wooded area , 10.2% agricultural area , 0.7% settlement area , 2.1% water area and 40.7% from unproductive areas.

The mean height of the catchment area is 1211  m above sea level. M. , the minimum height is 563  m above sea level. M. and the maximum height at 2032  m above sea level. M.

Hydrology

Flood

In the past it has been shown again and again how dangerous the Glyssibach can be as a torrent. Since it rises in a rock massif and has many spring arms, it can rise sharply within a short time and carry a lot of debris with it. During the Alpine floods in 2005, it rained very heavily during the night and the situation was already critical. The fire brigade began to evacuate the village quarter on the alluvial surface of the stream. Shortly afterwards, a huge tidal wave with water and debris thundered down the stream and cleared away everything that stood in its way. In this event, two people were killed in their sleep.

Correction and flood protection

In order to avoid a second accident of this kind, protective measures were taken. A bed load collector was built above the village in order to back up and regulate debris flows and large amounts of water in good time. The stream bed of the lower course was also massively widened so that the Glyssibach has a larger capacity. In the past it only flowed through a very narrow, artificial drainage channel.

Web links

Individual evidence

  1. ↑ a b Geoserver of the Swiss Federal Administration ( information )
  2. ↑ Topographical catchment areas of Swiss waters: Glyssibach