The gavier lake is located in southern west part of Surat city. It is a perennial lake, rich in aquatic vegetation, therefore harbours several kinds of avifauna throughout the year. The present work has been carried out from January 2015 to December 2015, for determining the species diversity of aquatic avifauna which is inhabited by a variety of smaller birds, resident birds, migratory birds and wading birds. The study revealed occurrence of 57 avifaunal species belonging to 08 orders; 15 families, out of which 26 species were residential, 10 were residential migratory and 21 species were found to be migratory. Among these, Charadriiformes and Anseriformes are the dominating orders of the aquatic birds. During winter season, avifaunal diversity was maximum, so it was found that the avifauna of this Gavier lake utilizes maximum water body in winter while minimum in monsoon season.