Neknampur Lake, also known as Ibrahim Bagh Cheruvu, located in Indian city of Hyderabad, was once part of a water reservoir network that was used for irrigation and providing drinking in the surrounding areas.

The lake was first dig up almost 450 years ago by Ibrahim Qutb Shah the fourth ruler of Golconda. Later his grandson Abdullah Qutb Shah decided to flood the lake. The construction was entrusted to one of the Shah's courtier known as Neknam Khan aka Raza Quli Baig. Rather than using water from adjacent Musi, Neknam Khan commissioned channels to fill the lake from water bodies behind the Golconda Fort. Neknampur lake is one of the three major lakes that were created during the reign of Quli Qutub Shah. The other two lakes are Ibrahimpatnam lake and Hussainsagar. Ibrahimpatnam lake has drastically shrunk and almost does not exist. There was a proposal by GHMC to use the lake to dump sewage from surrounding housing colonies. The lake is today divided into two parts known as Chinna Cheruvu and Pedda Cheruvu. The Chinna Cheruvu or the Smaller lake has been partially restored and converted into a scenic spot whereas the Pedda Cheruvu or the Larger Lake continues to struggle with pollution.

The lake is dumped with various chemicals and also used as a garbage dump by various residential colonies surrounding it. Encroachments and illegal structures surrounding the lake were demolished by government authorities. However these structures are being illegally rebuilt by the encroachers

The lake was gradually occupied by land grabbers and converted in to a dump yard for construction debris, garbage, sewage discharge and covered in water hyacinth. The lake was barely existing and the surface area of the lake was less than 25 acres (0.10 km). Efforts to restore the lake was taken up in 2016 with the help of NGOs based in Hyderabad. The restoration and rejuvenation of the lake included cleaning the lake and floating wetland treatment to tackle the growth of water hyacinth. Contaminants were removed using plants and with the use of microorganisms. NITI Aayog has recognised these efforts and "it has been identified as a role model for 'best restoration practices' in the country." Neknampur lake restoration "has been recognised as a role model in the 'watershed development' category along with four other projects" in India. According to Niti Aayog, there has been a 90% reduction in Biochemical Oxygen Demand (BOD) of the lake. Centre for Science and Environment (CSE) has also recognised Neknampur Lake "as the best model of lake restoration in India."