Dischmabach

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Dischmabach
The Dischmabach

The Dischmabach

Data
Water code CH : 299
location Rhaetian Alps

Switzerland

River system Rhine
Drain over Landwasser  → Albula  → Hinterrhein  → Rhine  → North Sea
source below Scalettahorn
46 ° 41 ′ 36 ″  N , 9 ° 56 ′ 4 ″  E
Source height approx.  2800  m above sea level M.
muzzle Confluence with Landwasser Coordinates: 46 ° 48 ′ 5 ″  N , 9 ° 50 ′ 16 ″  E ; CH1903:  783 112  /  186161 46 ° 48 '5 "  N , 9 ° 50' 16"  O
Mouth height 1543  m above sea level M.
Height difference approx. 1257 m
Bottom slope approx. 79 ‰
length approx. 16 km
Catchment area 53.7 km²
Discharge at the Davos gauge , Kriegsmatte
A Eo : 42.9 km²
NNQ (1965)
MNQ 1964–2016
MQ 1964–2016
Mq 1964–2016
MHQ 1964–2016
HHQ (1975)
80 l / s
1.14 m³ / s
1.7 m³ / s
39.6 l / (s km²)
2.2 m³ / s
19.1 m³ / s
Discharge at the estuary
A Eo : 53.7 km²
at the estuary
MQ
Mq
1.82 m³ / s
33.9 l / (s km²)
Part of the main hydrological strand of the Alpine Rhine
The Dischmabach in the Dischmatal

The Dischmabach in the Dischmatal

The Dischma Bach flows into the Landwasser (left)

The Dischma Bach flows into the Landwasser (left)

The Dischmabach is a 15 kilometer long stream in the Albula river system . It is a southeastern and left tributary of the Landwasser and drains the Dischma . Its catchment area is mainly in the area of ​​the Swiss municipality of Davos .

geography

course

The Dischmabach has two equal source brooks. The Dischmabach has its headwaters in the area of ​​the Scalettapass ( Dischmabach source 1 ). The other source stream, the Furggabach , has its source area at the Fuorcla da Grialetsch ( Furggabach source ). Both source streams unite at Dürrboden ( Dischmabach source association ). Then the Dischmabach flows in a north-westerly direction through the elongated and gently sloping Dischma and flows into the Landwasser between Davos-Dorf and Davos-Platz .

Tributaries

Inflows from the source to the mouth with length information in km, catchment area size in km² and the mean discharge (MQ) in m³ / s

  • Furggabach ( right ), 3.5 km, 6.35 km², 0.23 m³ / s
  • Riinertällibach ( left ), 4.1 km, 4.32 km²
  • Rüedisch Tällibach ( Rüedischbach ) ( left ). 3.5 km, 3.04 km²

Hydrology

Main hydrological strand

Within the Hinterrhein system, the sources of the Dischmabach are about 72 km away from the confluence of the Vorder and Hinterrhein rivers. Only the sources of Rein da Medel , Rein da Maighels and Rein da Curnera (around 74–76 km), which belong to the Vorderrhein system, are at a greater distance. Above all, the Furggabach via Dischmabach is the main hydrological branch of the Alpine Rhine , which is formed by the larger (more watery) river at each confluence (see also the source of the Rhine ). The Dischmabach is one of the most important source rivers of the Rhine .

Flood

The mean annual high water of the Dischma brook at the Kriegsmatte gauge is 11.40 m³ / s. The highest annual peak ever recorded was registered in 1975 and was 19.10 m³ / s.

The flood probabilities for the Dischmabach are shown in the following table:

Probability of occurrence of annual flood values ​​( HQn ) Measurement
period 1964–2012 Measurement site
: Dischmabach - Davos, Kriegsmatte - 2327
Annuality (years) 2 5 20th 30th 50 100
Discharge (m³ / s) 11 14th 16 18th 19th 20th
Note to HQN: the number corresponding to the high water flow (HQ =  H ochwasser q uantität) in m³ / s, which - repeated with the specified return period (n = number of years) - the average.

Web links

Commons : Dischma  - collection of images, videos and audio files

Individual evidence

  1. a b c Geoserver of the Swiss Federal Administration ( information )
  2. a b Topographical catchment areas of Swiss waters: area outlets. Retrieved May 26, 2019 .
  3. ^ " Kriegsmatte" measuring station in Davos 1964–2016 (PDF) Federal Office for the Environment FOEN
  4. The length information, catchment area sizes and the values ​​for the mean runoff to swisstopo .
  5. Flood probabilities (annual flood), Dischmabach - Davos, Kriegsmatte. (PDF) Federal Office for the Environment FOEN, Hydrology Department, accessed on January 29, 2014 .
  6. Measuring point: Davos, Kriegsmatte (2327), on FOEN hydrodata