hydroelectric dam floodgate with flowing water through gate and open the springway khun dan prakan chon dam in nakhon nayok

and building cement chon construction dam dan dewatering drainage drought electric electricity energy environment flood floodgate flow flowing fuel gate generate generation generator high hydroelectric industrial industry irrigation khun landmark landscape mountain natural open outdoor power powerful prakan recycling reservoir resources river spillway splashing spring station structure sustainable thailand tourism travel wall water waterfall way