The Sahagún Weir, built between 1753 and 1757, is part of the Campos Branch of the Castile Canal, a network of works designed to regulate and distribute water for agricultural irrigation. Located in the municipality of Paredes de Nava (Palencia), at kilometer 102.300, this infrastructure played a vital role in controlling the flow of water, ensuring its orderly use in a region deeply connected to cereal farming.
The structure has a square floor plan and approximate dimensions of 3.45 meters on each side and 2.10 meters in height, reflecting a simple and strictly functional design. The enclosure is made of pressed brick, with prominent corner piers reinforcing the structure, and rests on a limestone plinth. The roof is a brick dome, finished externally with a hipped roof and crowned by a limestone cornice, an element that protects the structure and facilitates rainwater runoff. This combination of materials reflects common construction solutions found in canal watchtowers.
Integrated into the open landscape of Tierra de Campos, the Almenara de Sahagún offers visitors a reflective stop to understand the importance of these discreet but essential constructions, and to appreciate how the Canal de Castilla organized water, territory and rural life for centuries.
