The Royal forest department surveyed Muak Lek stream, which born from Khao Yai forest, Pak Chong district, Nakhon Ratchasima province, confluence with Pasak river at Wang Muang sub-district, Muak Lek district, Sara Buri province, due to it is the waterway flowing through the upper part of the plateau at Sara Buri province pass the complex not rather heigh mountain range so it caused of short level waterfalls, but the beautiful of the nature is different, it seems to be a man- made dam with stream all round year.