This is Leawood Pump House on the Cromford canal Derbyshire. The Leawood Pump House was built in 1849 to supply water to the Cromford Canal, built some 50 years previously. Water had been supplied to the canal from the Cromford Sough and Bonsall Brook via a mill owned by Sir Richard Arkwright, but in an 1839 court case, Arkwright lost any rights to the water from the Cromford Sough and in 1841 the Merebrook Sough was opened and the iron doors that had been holding back the water pending the outcome of the court case were removed. This drained water from the lead mines at a level below the canal and as a result the canal suffered a severe lack of water. By the autumn of 1844 the situation was so serious that a pump was hired and installed by the end of November to take water from the River Derwent. The Leawood Pump House was built in 1849. In the pump house there is a Watt-type beam engine which was designed and erected by Graham and Company of Milton Works, Sheffield. The beam length is 33ft, the piston diameter 50 in, stroke of 10ft and the engine works at 7 strokes per minute. The boilers, replaced in 1900 have a pressure of 40 p.s.i. Water is drawn from the River Derwent through a 150 yard tunnel to a reservoir in the basement. It is then lifted 30 ft and discharged into the canal. The immense size of the pump (which can transfer almost four tons of water per stroke and seven strokes a minute, a total of over 39,000 tons of water per 24 hours) is explained by the fact that there were restrictions on removing water from the Derwent river, this being allowed only between 8 p.m. on Saturdays and 8 p.m. on Sundays.In 1905, responding to complaints of boats grounding, a record of the number of hours the engine had worked was produced. This indicated that between July 7th and October 14th, the engine had been operated for a total of 308 hours. The record also showed that the engine was pumping 470,400 gallons per hour. This equates to a speed of over 7½ strokes per minute. Regrettably the canal now seems to be once again in decline with the water now covered lily pads and other water plant life. But it is a bit of a haven for water voles, frogs and other wildlife.