Isac
| Isac | ||
 The Isac just before its confluence with the Vilaine |
||
| Data | ||
| Water code | FR : J9-0250 | |
| location | France , Pays de la Loire region | |
| River system | Vilaine | |
| Drain over | Vilaine → Atlantic Ocean | |
| source | on the municipal boundary of Abbaretz and Joué-sur-Erdre 47 ° 31 ′ 36 ″ N , 1 ° 28 ′ 51 ″ W |
|
| Source height | approx. 44 m | |
| muzzle | in the municipality of Fégréac in the Vilaine coordinates: 47 ° 34 ′ 39 ″ N , 2 ° 6 ′ 8 ″ W 47 ° 34 ′ 39 ″ N , 2 ° 6 ′ 8 ″ W |
|
| Mouth height | approx. 3 m | |
| Height difference | approx. 41 m | |
| Bottom slope | approx. 0.59 ‰ | |
| length | 69 km | |
| Left tributaries | Plongeon , Goujonnière | |
| Right tributaries | Perche | |
| Small towns | Blain | |
| Navigable | from the estuary to Le Chevallerais as part of the Canal de Nantes à Brest | |
The Isac is a river in France that runs mainly in the Loire-Atlantique department , in the Pays de la Loire region . It arises from the confluence of two source streams at the municipal boundary of Abbaretz and Joué-sur-Erdre , drains generally in a south-westerly direction and reaches the Canal de Nantes à Brest at La Chevallerais , which from here it serves as a canalised river. Just before its confluence, the river separates from the canal and flows into the Vilaine after 69 kilometers northeast of Théhillac , but in the municipality of Fégréac as a left tributary . Just before its mouth, it forms the border to the neighboring Morbihan department in the Brittany region for a few hundred meters . The Isac is navigable in the area of the Canal de Nantes à Brest. Today the canal is only used for tourism by sport boats and houseboats .
Places on the river
Web links
Individual evidence
- ↑ Source geoportail.gouv.fr
- ↑ estuary geoportail.gouv.fr
- ↑ Water information system Service d'Administration National des Données et Référentiels sur l'Eau (French) ( information ), accessed on December 1, 2014, rounded to full kilometers