Étang du Puits, Artificial pond in Cerdon, Cher and Loiret, France

Étang du Puits is an artificial pond of 1.8 km², the largest in the Sologne natural region, lying across the communes of Argent-sur-Sauldre and Clémont in the Cher and Cerdon in the Loiret. Its dam holds back water 7.65 m deep, and the GR3C footpath runs along its western and south-western shores. At very low water, brick remains of an old farm or tile works appear on the eastern bed.

The lake was built in the 19th century to supply water to the Sauldre Canal and is now the largest body of water in the Sologne region. Its original purpose as an engineering project transformed it into a major site for recreation and wildlife observation.

The pond's name comes from a well (puits) linked to the Sauldre canal. Each 15 August a fishing festival is held with separate contests for women and men. The only way to reach it is by boat, notably the flûtes berrichonnes that sail the canal from Argent-sur-Sauldre.

The lake offers fishing across three distinct sectors, with some areas allowing night fishing according to local rules. Visitors should check the specific regulations for the sector they plan to visit.

At very low water levels, the remains of a brick structure appear on the eastern bed of the pond: seven levelled brick piles, possibly an old farm or tile works. The surrounding wood is called Bois aux Moines, evidence that people lived here before the pond was filled.