In 1997–1998, over 1,200 gharials and over 75 nests were located in the National Chambal Sanctuary, but no surveys were carried out between 1999 and 2003.
En 1997–1998, uns 1 200 gaviais e uns 75 niños foron situados no Santuario Nacional de Chambal, pero non se realizaron avaliacións entre 1999 e 2003.