High Quality Content by WIKIPEDIA articles! The Okhla barrage bird sanctuary in Okhla, near Delhi is a haven for waterbirds. In 1990, an area of 3.5 square kilometres (1.4 sq mi) on the river Yamuna was notified as a bird sanctuary by the Uttar Pradesh government under the Wildlife Protection Act of India. The site is located at the point where the river leaves of Uttar Pradesh. The most prominent feature of the sanctuary is the large lake created by damming the river, which lies sandwiched between Okhla village towards the west and Gautam Budh Nagar towards the east.