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The river in the greater Grenoble area

The river in the greater Grenoble area

Water code FRW2-0200
location France , regions Provence-Alpes-Cote d'Azur and Auvergne-Rhône-Alpes
River system Rhône
Drain over Isère  → Rhône  → Mediterranean
source Pelvoux massif, in the municipality of Orcières
44 ° 39 ′ 18 ″  N , 6 ° 24 ′ 57 ″  E
Source height approx.  2430  m
muzzle on the municipal boundary of Sassenage and Saint-Égrève in the Isère Coordinates: 45 ° 12 ′ 58 ″  N , 5 ° 40 ′ 29 ″  E, 45 ° 12 ′ 58 ″  N , 5 ° 40 ′ 29 ″  E
Mouth height approx.  207  m
Height difference approx. 2223 m
Bottom slope approx. 17 ‰
length 130 km
Catchment area 3626 km²
Discharge at the Fontaine gauge MQ
98 m³ / s
Left tributaries Souloise , Ébron , Gresse
Right tributaries Drac de Champoléon, Séveraisse , Bonne , Romanche
Reservoirs flowed through Lac du Sautet , Lac de Saint-Pierre-Cognet , Lac de Monteynard-Avignonet , Lac de Notre-Dame-de-Commiers
Big cities Grenoble
Medium-sized cities Échirolles , Fontaine
Small towns Le Pont-de-Claix , Seyssins

The Drac is a river in France that runs in the Provence-Alpes-Côte d'Azur and Auvergne-Rhône-Alpes regions. Its main source, the Drac Noir, has its source in the Pelvoux massif, on the northwest flank of the Crête de la Dent mountain range , near the Col des Tourettes (2582 m). The source is in the Écrins National Park , in the Orcières municipality . The Drac initially drains northwest through the Champsaur landscape , later swings in a northerly direction, crosses the greater Grenoble area and flows into the Isère as a left tributary after 130 kilometers just northwest of it at the municipal boundary of Sassenage and Saint-Égrève . The Drac crosses the Hautes-Alpes and Isère departments on its way . It runs about 90 km along the Route Napoléon .

In the upper reaches of the river is the water intake of the Gap Canal , which carries water into the neighboring valley of the Durance .

Places on the river

Web links

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

Individual evidence

  1. a b geoportail.fr (1: 16,000)
  2. a b c The information on the length of the river is based on the information about the Drac from SANDRE (French), accessed on February 10, 2011, rounded to full kilometers.
  3. hydro.eaufrance.fr (station: W2832020 , option: Synthèse )