What is a liverpool fence and how do horses react to it?

A liverpool fence is a jumping obstacle that incorporates a water tray or blue-painted flat element positioned underneath or at the base of the fence — essentially a shallow pool of water, or a blue rectangle suggesting water, placed beneath a rail or in front of a fence face to create a visual obstacle that extends the effective width of the fence and tests the horse's willingness to jump over a water element. Liverpools are used in both hunter and jumper competition, though they appear more commonly in jumpers where their visual complexity is used to add technical difficulty without increasing fence height. Horses that have not been exposed to liverpool-type fences often react to their first encounter with significant hesitation or refusal, because the combination of the fence itself with the flat visual element below creates a more complex obstacle than a simple rail — the horse must process both the physical fence above and the flat element below simultaneously, and many horses initially perceive the flat visual element as a separate obstacle or as something confusing about the normal fence appearance. Preparing horses for liverpools involves systematic desensitization: introducing blue tarps or flat water elements on the ground first, then placing them near fences the horse is comfortable with, then progressively incorporating them as actual fence elements as the horse demonstrates acceptance. A horse that has been properly introduced to liverpools will jump them without hesitation — treating the water element as visual decoration rather than as an additional obstacle. In competition, the liverpool's position within the course — whether it appears early when the horse is fresh and looking, or later when it has relaxed into the work — can significantly affect how horses react, and trainers often strategically introduce horses to liverpools in schooling situations that replicate the competition context.