The Sequillo River Spillway is a hydraulic infrastructure of the Castile Canal located in the municipality of Tamariz de Campos (Valladolid), at kilometer 145.700, within the section between Lock 7 of Campos and the Medina de Rioseco Dock. Its importance lies in the function it performs within the canal system: allowing the controlled evacuation of excess water from the Sequillo River and contributing to the regulation of the canal’s water level at a key point in its route.
This is an auxiliary structure, discreet in nature and fully integrated into the landscape, designed to operate effectively during periods of high water or intensive flow regulation. These spillways are part of the detailed engineering of the Canal de Castilla, where each element fulfills a precise function to guarantee the stability of the system and protect key infrastructure such as locks, basins, and canal banks. Although not particularly monumental, its role is fundamental to the proper hydraulic functioning of the system. The spillway retains all of the original hydraulic works, which reinforces its heritage value and justifies its comprehensive protection.
For visitors, the Sequillo River Spill offers an opportunity to understand the Canal de Castilla from a less visible but essential perspective: that of water control and management. Integrated into the open landscape of Tierra de Campos, it invites one to pause and observe how these silent infrastructures maintain the balance of one of the great hydraulic works of the 19th century.
