Children from Ban Khounkham play and fish in a discharge pool at the base of the Theun-Hinboun Power Plant surge control pond regulating weir. Water is diverted from the Nam Theun/Nam Kading basin through the Theun-Hiboun Hydropower Plant tunnel system and into the Nam Hai/Nam Hinboun River basin to the south. Further downstream the Nam Hinboun River flows into the Mekong River. Increased hydropower production at the Theun_Hinboun Power Plant increases water flow on the regulated Nam Hai River, especially during the dry season.