view over of ratchaprapha dam or cheow lan dam hydro electric power station at khao sok national park thaila

architecture buildings cheo cheow chiao cloud concrete construction control dam development electric electricity energy engineering environment environmental floodgate forest gate generation generator green high hill hydro hydroelectric industrial irrigation khao lake lan landmark limestone mountain national natural nature park plant power province rainforest ratchaprapha renewable river road rock sky sok station stone supply surat sustainable technology thailand thani tropical water