Largue (Ill)

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Largue
The largue in Dannemarie

The largue in Dannemarie

Data
Water code FR :  A11-0200
location Sundgau

France

River system Rhine
Drain over Ill  → Rhine  → North Sea
source on Glaserberg near Oberlarg near the border with Switzerland
47 ° 27 ′ 20 ″  N , 7 ° 14 ′ 20 ″  E
Source height 500  m
muzzle at Illfurth in the Ill Coordinates: 47 ° 39 '46 "  N , 7 ° 14' 22"  E 47 ° 39 '46 "  N , 7 ° 14' 22"  E
Mouth height 258  m
Height difference 242 m
Bottom slope 4.7 ‰
length 51 km
Catchment area 277.1 km²
Discharge
A Eo : 277.1 km²
at the mouth 		MQ 1971–1990
Mq 1971–1990
 		3.46 m³ / s
12.5 l / (s km²)
The composed source

The composed source

The Largue (Eng .: Larg ) is a 51 km long tributary of the Ill in the Sundgau landscape of the Grand Est region , France .

Surname

The name of the river is derived from the Latin larga .

geography

course

The Largue rises at about 500 m altitude on the Glaserberg near Oberlarg near the border with Switzerland and flows into the Ill at Illfurth at 258 m altitude .

Tributaries

  • Laltriff ( left ), 1.4 km
  • Goutte ( left ), 1.3 km
  • Ribersmattenbach ( left ), 3.7 km
  • Grumbach ( right ), 11.6 km
  • Babersenbach ( left ), 4.6 km
  • Largitzenbach ( right ), 13.1 km
  • Halsbach ( right ), 3.0 km
  • Krebsbach ( left )
  • Elbbaechlein ( left ), 5.8 km
  • Traubach ( left ), 9.8 km
  • Soultzbach ( left ), 16.7 km
  • Allmendgraben ( right ), 5.2 km
  • Grengelgraben ( right ), 1.3 km
  • Krebsbach ( left ), 14.7 km
  • Trendlingergraben ( left ), 6.9 km

Hydrology

At the confluence of the Largue in the Ill, the mean natural flow rate (MQ) is 3.46 m³ / s; the catchment area here covers 277.1 km². It slightly exceeds the Ill, which leads 3.24 m³ / s at the mouth and drains a catchment area of ​​339.4 km².

At the Spechbach-le-Bas gauge, the average annual runoff of the Largue was calculated over a period of 41 years (1969–2009) . The catchment area at this point corresponds to about 86% of the entire catchment area of ​​the river with 239 km².

The flow rate fluctuates quite strongly over the course of the year. The highest water levels are measured between December and March. The flow rate reached its peak in February at 5.72 m³ / s. From April on, the discharge decreases month by month and reaches its lowest level in August with 0.83 m³ / s, after which it increases again from month to month.

The monthly mean discharge (MQ) of the Largue in m³ / s, measured at the hydrological station Spechbach-le-Bas.
Data calculated from the values ​​for the years 1969–2009

Individual evidence

  1. ↑ Largue at SANDRE (French)
  2. ↑ a b c see web link: Débits caractéristiques de la Largue
  3. ↑ Banque Hydro - A1150200 La Largue à Spechbach-le-Bas (menu item: Synthèse)

Web links