Resumen
The National Plan of Hydraulic Works of 1933 was the result of three decades of dedication of the hydrological institutions developed by the Regeneracionismo. The Plan was conceived to solve the shortcomings of the Mediterranean irrigation areas by the construction of dams and the diversions between watersheds. Damming the Júcar to regulate the river was a key element. The creation of the Confederación Hidrográfica del Júcar in 1934, reinforcing the control of users over the river, complicated the implementation of the plan, which was abandoned with the Civil War.