André Coyne

Who was André Coyne?

André Coyne was a French civil engineer who designed 70 dams in 14 countries. He received his education at École Polytechnique and its School of Civil Engineering afterwards.

He worked on the Plougastel Bridge and in 1928 was appointed as the chief engineer of dams in the Upper Dordogne River. While in that position, he designed the Marèges Dam which incorporated several innovative advancements in dam design. In 1935 he became the head of France's Large Dam Engineering Department and between 1945 and 1953 he served as President of the International Commission on Large Dams. In 1947 he departed civil service and started his own consulting firm, Coyne et Bellier.

Other dams he later designed in France include the Grandval and Roselend Dams. Overseas he designed the Kariba Dam on the Zimbabwe-Zambia border and the Daniel-Johnson Dam in Quebec.

Coyne also designed the Malpasset Dam in Southern France. Nearly immediately after construction was completed on the dam, cracks were noticed at the base. A few years later, on December 2, 1959, the dam abruptly swung open and released a 50 meter high wall of water that reached the nearby town of Fréjus, killing an estimated 421 people.