Lock 30

Esclusa

Lock 30

Grijota
Province

Palencia

Branch

South

Visit duration

30-60 minutes

Services available

Aparcamiento

Provincia

Palencia

Ramal

South

Duración visita

30-60 minutes

Servicios disponibles

Aparcamiento

Página web

The heritage complex of Lock 30, built between 1759 and 1804, is located in the municipality of Grijota (Palencia), at kilometer 92.129 of the Southern Branch of the Castile Canal. This site is part of the earliest infrastructure of this branch and its main function was to regulate the canal’s water level, control the flow, and allow the use of the waterfall, integrating navigation, maintenance, and productive uses at a single point.

The main feature is Lock 30, a simple, oval-shaped lock measuring approximately 23.20 meters long, 10.20 meters wide, and 4.70 meters high. It is constructed of limestone masonry and retains all of its original hydraulic structure. The intake channel has been modified over time, distorting the line of the upper right wing, and is now served by a prismatic inlet with two gates, only one of which remains in service to supply the adjacent building. On the left bank, a lateral spillway connects via an underground conduit to the intake on that bank and discharges directly into the lock basin.

Associated with the lock are several complementary elements that complete the functional reading of the whole: the main bridge over the lock, with a semicircular arch and limestone ashlar, with wings that form a spur at the outlet of the weir and partially reformed parapets; a second bridge at the diversion, also made of stone, which gives continuity to the old road and the paths on the right bank; and the lock keeper’s house, rectangular in plan, with a stone plinth, brick and rammed earth walls and tile roof, now unused and in a state of ruin, but protected by the value of its facades and original structural elements.

A visit to Lock 30 offers a glimpse into the Canal de Castilla as a system where engineering, roads, and daily life intertwine. The open landscape of Tierra de Campos, the serene flow of the water, and the proximity of Grijota provide visitors with a leisurely and insightful experience, allowing them to discover the technical and human dimensions of the canal along its Southern Branch.
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How to get there:

Access to the lock is immediate, at kilometer 15 of the section shared by the N-610 route from Magaz to Becilla de Valderabuey and the C-612 route from Palencia to Zamora via Medina de Rioseco. This point is about 4 kilometers from the city of Palencia.