Nidd Falls is a delightful waterfall on the River Nidd just upstream from Lofthouse. It is easily accessible from either the public footpath from Lofthouse or the access road to Scar House Reservoir. Bizarrely the waterfall is neither named or marked on the OS map.
Interestingly, in normal conditions, the water coming down the falls is not the River Nidd at all but water that has come down the likes of How Gill and Intake Gill. The Nidd itself has usually gone underground by this point and does not re-emerge until Nidd Heads to the south of Lofthouse.
Between Lofthouse and Nidd Falls there is also a nice series of small waterfalls just above the footbridge crossing the Nidd. As with the main waterfall a bit further upstream these waterfalls are not marked on the map.