Spatial extent of the basinThe Ganga river basin spans approximately 10,86,000 sq km across India, Nepal, Tibet (China), and Bangladesh. The basin can be divided into three stretches:— Upper Ganga Basin: From the origin to Narora Barrage. According to the India-WRIS report, the Ganga basin has 478 major and medium irrigation projects and 39 hydro-electric projects. In 2009, the National Ganga River Basin Authority (NGRBA) was established to coordinate planning, financing and monitoring of conservation programmes. Despite several government programs like GAP-I (the Ganga Action Plan-I), GAP-II, the National Ganga River Basin Authority, and Namami Gange, why have results in cleaning the Ganga remained limited?