| Lac d'Orédon | |
| Pushpin Map: | Pyrenees |
| Location: | Hautes-Pyrénées |
| Coords: | 42.8256°N 0.1619°W |
| Type: | reservoir |
| Inflow: | Lac de Cap-de-Long |
| Outflow: | Neste |
| Basin Countries: | France |
| Area: | 0.46km2 |
| Elevation: | 1849m (6,066feet) |
Lac d'Orédon is a lake raised by a dam in Hautes-Pyrénées, France. At an elevation of 1849 m, its surface area is 0.46 km².
It was one of the first lakes of the Pyrenees to have been built in the 17th century.[1]
In 1864, the Ministry of Agriculture decided to increase and regulate the flow of the Neste canal (feeding Gers rivers) using the lakes of the upper valley of Aure (Aubert, Aumar, Cap-de -Long, Lac d'Orédon). The lake was expropriated for public utility in June 1869. Construction of the dam and reservoir was completed in 1884.