build a sewer line around the periphery of the lake to trap all the sewage from the residential areas and prevent it from entering the lake. A treatment plant to treat the waste water is also part of the waste water treatment process. The picturesque island at the middle of the lake has recreation facilities including an aquarium and is approached by rowing boats. Dam The dam which has created the lake is a masonry structure built at the center to a height of . It has a length . The base of the dam at the center has a width of which reduces to a top width of . The dam is designed to pass a flood discharge of through a chute spillway which is fitted with 12 gates. The dam is located in the Seismic Zone IV. Wildlife Wildlife seen around the lake are barking deer, Kalij pheasants, Koklass pheasants white-capped laughingthrush and migratory ducks and geese. Fisheries The fish species found in the lake are common snowtrout, catla, rohu, silver carp (Hypophthalmichthys molitrix) and grass carp (Ctenopharyngodon idella). Also recorded in the lake waters are Common carp (Cyprinus carpio) and major carps (Labeo rohita, Cirrhinus mrigala and catla catla). A fish farm has been set up in the Bhima Tal. Every year large fish yields from the lake are of Mahseer, and Tor putitora) species. It is essential to get the permission of the Deputy Commissioner to fish in the lake. See also Lakes of Kumaon hills Nainital Lake References Bibliography External links Lakes of Uttarakhand Nainital district Tourist attractions in Uttarakhand Uttarakhand