Repairs being made to the Georgian leat built to supply water to the Great Cascade from a pond higher up the combe (valley), 1995.

The Great Cascade is fed by a stream which originates high in the Quantocks, and is redirected via a large catchment pond along a brick-lined leat. Up until 1995, water had been supplied in makeshift fashion from the so-called Box Pond, via a plastic pipe installed by the Somerset Fire Brigade, who were then based in Hestercombe House. The 300-yard (274 m) Georgian leat was repaired over a six-month period in 1995 by building contractors, who were obliged to replace 7,000 of the estimated 17,000 bricks that had been fired on the estate in the 18th century.