[3] He was responsible for excavating many prestigious archaeological sites in Egypt, including Deir Abu Hennis, St. Simeon Monastery, Aswan, Asyut, Akhmim, Sohag, Luxor, Elephantine, Tell el-Herr, Tell el-Maskhouta, Mahemdiah and El Qantara.
In 1910, Clédat excavated at Pelusium in Tell el-Farama, and made a sketch map of the site and also discovered an inscription mentioning Emperor Hadrian.
[6] At various times, Clédat's expeditions were sponsored by others, including the Supreme Council of Antiquities, the Comite, and the Institut Français d'Archéologie Orientale.
In his essay, "Pour la Conquête de l'Egypte" (1919), he described Egyptian methods of defense and offense upon the present Suez Canal route in ancient times.
In Notes sur l'isthme de Suez (1910), the remains of a Byzantine fortress at the same locality are illustrated by a plan, and the Israelite passage of the Red Sea includes an excellent map.