 In 1840 the Grand Duchy of Baden and France concluded an agreement on Rhine regulation after Johann Gottfried Tulla.In 1902, the Alsatian engineer Koechlin made a push to use the water power of the Rhine.In 1928 the expansion of the Rhine began with the Grand Canal d'Alsace and the first four power stations (Kembs to Vogelgrün), four further barrages in the so-called loop solution (Marckolsheim to Strasbourg) followed in 1959.