Les Collières

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Les Collières
upper course: Torrent de Combet
lower course: Les Claires
Data
Water code FR :  V3430560
location France ,
Region Auvergne Rhône-Alpes
River system Rhône
Drain over Rhône  → Mediterranean
source Bois des Potences in Lens-Lestang
45 ° 16 ′ 46 ″  N , 5 ° 2 ′ 9 ″  E
Source height approx.  420  m *
muzzle near Saint-Rambert-d'Albon
in the Dérivation de Péage-de-Roussillon of the Rhône Coordinates: 45 ° 17 '55 "  N , 4 ° 48' 22"  E 45 ° 17 '55 "  N , 4 ° 48' 22"  O
Mouth height approx.  135  m *
Height difference approx. 285 m
Bottom slope approx. 13 ‰
length 22 km **

Les Collières , in the upper reaches of the Torrent de Combet , in the lower reaches of Les Claires , is a small tributary of the Rhône of 21.7 km in the French department of Drôme . Two kilometers from the estuary, it takes up the more than 60 km long watercourse from Rival, Raille and Oron .

course

The Torrent de Combet, defined as the upper reaches of the Collières, comes from a forest valley on the northern edge of the Chambaran Plateau and only carries water for a short time after rainfall. It reaches the edge of the glacial valley, which branches off to the right at Voreppe from the Isère valley and is also called Plaine de Bièvre in the upper part . The water network in the wide valley floor is primarily used for irrigation.

There it meets the Veuze (IGN) or Grande Veuse (SANDRE V3430540), which rises half a kilometer east from karst springs, almost 230 m above sea level . On the opposite bank, les Collières is a small ditch that still crosses the connection from a fish farm to a reservoir. There is no separation into two levels in the form of a small aqueduct or a culvert , according to local information (Gendarmeriestation Moras-en-Valloire).

Integration of the upper reaches of the Collières into the local water system
Source pond of the Veuze (postcard around 1900)

The ditch leads north around the reservoir and then parallel to the Veuze to the west. In the vicinity of the crossing TGV route, the Collières comes through an offset into a ditch which branches off from the Veuze at an acute angle below.

5.24 km after the crossing of the waters, the Dolure stream (SANDRE V3430500) flows from the right, 17.9 km long and called "le Rif" in the upper reaches. Over the next 2.5 km, the Collières absorbs the remaining water from the irrigation ditches into which the Grande Veuse branches off in Saint-Sorlin-en-Valloire . Two kilometers before the mouth, the Collières takes on a more than 60 km long inlet, consisting of the Rival, Raille and Oron streams . The name Les Claires is also used for the stretch of water between this confluence and the confluence with the Rhone Lateral Canal called Dérivation de Péage-de-Roussillon .

Communities

Tributaries

  • le (der) Dolure from the right (SANDRE V3430500 but forgotten as a tributary of the Collières), 17.9 km, in the upper reaches of le Rif , with the streams flowing in from the left:
    • Ruisseau Combeau (SANDRE V3431020 in Marcollin )
    • Ruisseau des Chansons (SANDRE V3431060 in Marcollin)
    • Ruisseau de Combeau (SANDRE V3430520 in Marcollin)
    • Ruisseau de Lentiol (Sandre V3430520 in Lens-Lestang )
    • The Balme (see IGN: Carte IGN ) or Petite Veuse (SANDRE V3431140)
  • Upper course of the Grande Veuse from the right (One could also consider the Torrent de Combet as a tributary of the Grande Veuse . Elsewhere, SANDRE regards a water-bearing long water body as an inlet to the shorter permanent one.)
    • whose inlet Torrent de Frémuzet
  • Branches of the Grande Veuse from the left; whose tributaries below the water crossing:
  • Oron from the right

Information base

Individual evidence

  1. ↑ SANDRE V3430540
  2. ↑ SANDRE V3430500
  3. ↑ , SANDRE V3430500
  4. ↑ SANDRE V3431020
  5. ↑ SANDRE V3431060
  6. ↑ SANDRE V3430520
  7. ↑ Sandre V3430520
  8. ↑ SANDRE V3431140
  9. ↑ SANDRE V3431120