Ondaine

Ondaine Odenon
The river at Le Chambon-Feugerolles
Data
Water code	FR :  K0584000
location	France , Auvergne-Rhône-Alpes region
River system	Loire
Drain over	Loire  → Atlantic Ocean
source	on the municipal boundary of Planfoy and Saint-Genest-Malifaux 45 ° 22 ′ 48 ″  N , 4 ° 25 ′ 31 ″  E
Source height	approx.  1005  m
muzzle	in the municipality of Unieux in the Loire Coordinates: 45 ° 25 ′ 4 ″  N , 4 ° 14 ′ 54 ″  E 45 ° 25 ′ 4 ″  N , 4 ° 14 ′ 54 ″  E
Mouth height	approx.  425  m
Height difference	approx. 580 m
Bottom slope	approx. 31 ‰
length	19 km
Catchment area	122 km²
Left tributaries	Cotatay, Valchérie, Gampille
Medium-sized cities	Firminy
Small towns	La Ricamarie , Le Chambon-Feugerolles , Unieux

The Ondaine ( called Odenon in the upper reaches ) is a river in France that runs in the Loire department in the Auvergne-Rhône-Alpes region . It rises on the municipal boundary of Planfoy and Saint-Genest-Malifaux , in the Pilat Regional Nature Park , generally drains west to northwest through the urban center west of Saint-Étienne and, after 19 kilometers, flows into the backwater of the Barrage de Grangent on the right in the municipality of Unieux Tributary to the Loire .

Places on the river

(in flow order)

• La Ricamarie
• Le Chambon-Feugerolles
• Firminy
• Unieux

Web links

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

Individual evidence

1. ↑ Source geoportail.gouv.fr
2. ↑ estuary geoportail.gouv.fr
3. ↑ ^{a b c} The information on the length of the river is based on the information about the Ondaine at SANDRE (French), accessed on May 3, 2013, rounded to full kilometers.