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- Nov 16, 2015
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- Willow Grove,PA
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I built a pool under the waterfall that is oval shaped approx 2 feet at the widest part by 15" deep. Should I place stones into the pool? If yes how much of the pool should be filled with stone?There are basically two (2) types of pools associated with a stream or waterfall.....a 'scour' pool which is at the base of waterfalls and cascades and also following riffles is formed by the 'scouring' of the bottom by the force of the falling water in the former and the turbulent water in the latter.