the pak mun dam ,constructed on the mun river,a tributary of the mekong river, in ubon ratchathani province,thailand

agriculture architecture back barrage blue building cement cloud concrete construction dam dike door environment farmer farmland flood flow flowing hydro hydroelectric irrigation keep lake landscape mekong mun nature obstruct outdoors overflow pak rain ratchathani reserve reservoir river scenic set sky spillway station store supply thailand ubon view wall water weir