Lacs de Clairvaux

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As Lacs de Clairvaux be two adjacent lakes in the western section of the French Jura, referred to Jura in Franche-Comté. They are located on 526 m above sea level. M. in a valley on the edge of the high Jura, at Clairvaux- les- Lacs, some 20 km south-east of Lons -le- Saunier.

The Grand Lake has an area of ​​56 hectares, a length of about 1.2 km and a width of about 650 m. Its greatest depth is 20 m.

The south subsequent Petit Lac has an area of 17 acres, a length of 700 m and a width of about 370 m. Its greatest depth is 15 m.

The two lakes are flanked to the east and southeast of the forest heights of the Forêt de la Joux (up to 850 m above sea level. M. ). In the West, they are separated by a hill from the wide valley of the Ain. The Petit Lac is southeast of the lake fed by water from two sources in the basin. From this lake is a 300 m long channel (La Rail Lettering ) leads north to the Grand Lac. The Paillon, the outflow of the Grand Lac, flows through Clairvaux- les -Lacs and empties into the Drouvenant, a left side of the brook Ain.

During the Petit Lac is used as a drinking water reservoir for five adjacent communities, the Grand Lac is used for summer bathing. On the east bank of the Grand Lac is a holiday resort with camping and campgrounds. Traces of a Neolithic settlement were found on the north shore.