at the time including golden mahseer (Tor putitora). A few individuals were also sighted in tributaries of the Barak River in Assam, Mizoram and Manipur up to 1988, but surveys were not carried out. In 1927, a gharial was shot in the Shweli River in Myanmar, a tributary of the Ayeyawady River. This is the only authenticated record in the country attesting the survival of gharials into the 20th century. Whether gharials still live in the Shweli River today is possible but remained unclear in 2012. By 1976, its global range had decreased to only 2% of its historical range, and fewer than 200 gharials were estimated to survive. It is locally extinct in Pakistan, Bhutan and Myanmar. Since the early 1980s, the population has been reinforced with captive-bred gharials that were released into wild habitats in India and Nepal. In 2017, the global population was estimated to comprise at maximum 900 individuals, including about 600 mature adults in six major subpopulations along of river courses and another 50 mature adults in eight minor subpopulations along of river courses. In Nepal, small populations are present and slowly recovering in tributaries of the Ganges, such as the Karnali–Babai River system in Bardia National Park and the Narayani–Rapti river system in Chitwan National Park. In spring 2017, the Babai River was surveyed using an unmanned aerial vehicle, which detected 33 gharials on a stretch of . In India, gharial populations are present in the: Ramganga River in Corbett National Park, where five gharials were recorded in 1974. Captive-bred gharials were released since the late 1970s. The population is breeding since 2008, and increased to about 42 adults by 2013. Most of them congregate along an long stretch of the Kalagarh Reservoir's shoreline. Surveys in 2015 revealed a population of 90 gharials including 59 breeding adults. Ganges, where 494 gharials were released between 2009 and 2012 in Hastinapur Wildlife Sanctuary. Girwa River in Katarniaghat Wildlife Sanctuary where the small breeding population was reinforced with captive reared gharials since 1979. A total of 909 gharials were released until 2006, but only 16 nesting females were recorded in the same year. In December 2008, 105 individuals were counted including 35 adults. In spring 2009, 27 nests were detected in seven sites. The number of nest sites decreased from seven in 2017 to two in 2019, possibly due to the upgrowth of woody vegetation and reduced