The Nam Ngum River is a significant waterway located in central Laos. It flows through the Vientiane Province and is known for its scenic beauty and importance to local agriculture. The river is approximately 210 kilometers long and is a major source of water for irrigation and fishing in the region. The river is also home to the Nam Ngum Reservoir, created by the Nam Ngum Dam, which is one of the largest hydroelectric projects in Laos. This reservoir plays a crucial role in providing electricity to the country and supports local ecosystems, making the Nam Ngum River vital for both energy production and biodiversity.