Karanji Lake is a lake located in the city of Mysore in the state of Karnataka, India. The lake is surrounded by a nature park consisting of a butterfly park and a walk-through aviary. This aviary is the biggest 'walk-through aviary' in India.
1. The total area of Karanji Lake is 90 hectares. While water spread area is about 55 hectares, the foreshore area measures about 35 hectares. Karanji Lake is owned by the Mysore Zoo Authority. Mysore Zoo gets revenue of an average of Rs. 50000 per day from ticket sales to enthusiasts who visit this lake.
2. Karanji Lake was one of the favorite haunts of migratory birds like herons and egrets. But the lake started getting polluted when sewage from the nearby residential areas were let into the lake. This pollution led to the destruction of aquatic life in the lake and with the food-source getting depleted, the migratory birds started to avoid the lake.
3. The butterfly park has been created on a small island within the Karanji Lake. About 45 species of butterflies have been identified here. With the help of a botanist, appropriate species of host plants and nectar plants essential for the breeding of butterflies were selected and planted within the island. These plants have also been brought from hill stations and other regions like Malnad.
4. Some of the common migratory birds found here are grey pelican, painted stork, ibis, cormorant, egret, etc. which nest on trees in the islands present in the lake. Recent survey of birds has indicated 147 species. Herons, Asian open bill storks, egrets, red wattle lapwing, sandpipers, rose ringed parakeet, black drongo, brown shrike, red-whiskered bulbul, booted warbler, sunbird and greenish warbler are some of the other species of birds found here.