http://117.252.14.250:8080/jspui/handle/123456789/3065 Sun, 05 Apr 2026 19:42:16 GMT 2026-04-05T19:42:16Z http://192.168.134.211:8080/xmlui/bitstream/id/e6462540-6dc7-4695-8b69-23ef91b88568/nihr2019-07-08 (1).jpg http://117.252.14.250:8080/jspui/handle/123456789/3065 http://117.252.14.250:8080/jspui/handle/123456789/3122 Foreword Bhatia, K. K. S.; Khobragade, S. D. Sat, 01 Jan 2005 00:00:00 GMT http://117.252.14.250:8080/jspui/handle/123456789/3122 2005-01-01T00:00:00Z http://117.252.14.250:8080/jspui/handle/123456789/3121 Table of contents Bhatia, K. K. S.; Khobragade, S. D. Sat, 01 Jan 2005 00:00:00 GMT http://117.252.14.250:8080/jspui/handle/123456789/3121 2005-01-01T00:00:00Z http://117.252.14.250:8080/jspui/handle/123456789/3120 1-Enhancing bio-significance of urban lakes Devarshi, Dhirendra; Mathur, Reena Wetlands are important habitats for birds and other forms of wildlife. About 37.90% of bird species found in Rajasthan are either dependant on wetlands or opportunistically exploit wetlands. An area less than 1% geographical area of the State is available to this 38% of the State avifauna. The Urban lakes also support birds and other forms of wildlife as any other wetland. However, these wetlands are not managed as bird and animal habitats. This communication is based on a study of avifauna of Rajasthan State conducted during 1999 to 2005. The study area included several wetlands. Avian diversity of these wetlands varied from wetland to wetland. It was hypothesized that physical features, landscape and other structural features also serve as resource to birds apart from physico-chemical properties of water hence such features exploited, preferred or used by birds were carefully recorded. On the basis of these observations the study suggests and evaluates measures to enhance bio-significance of wetlands, including the urban lakes. These measures fall in four different categories-(i) Prohibitive; that suggest discontinuation of some practices (ii) Reductive; that suggest reduction of certain activities (iii) Cautionary; that caution regarding certain developmental activities such as development of walkways, roads, dykes, banks, boating, water sports etc. and (iv) real enhancement measures for developing nesting islands, perches, vantage points, watchtowers, etc. The recommendations are made with the following viewpoints - (i) nonconflicting approach or attempt to reach a balance between traditional use and conservation of habitat and resources (ii) rejuvenation of lakes is not merely bringing water to the lake but it is bringing 'life' to lakes. Sat, 01 Jan 2005 00:00:00 GMT http://117.252.14.250:8080/jspui/handle/123456789/3120 2005-01-01T00:00:00Z http://117.252.14.250:8080/jspui/handle/123456789/3119 2-Water budget of drinking water supply sources - Osmansagar and Himayatsagar Lakes Hyderabad Rao, V. V. S. Gurunadha; Suryanarayana, G.; Prakash, B. A.; Kumar, K. Mahesh; Pavankumar, N.; Reddy, T. Bhaskar; Ramesh, M. Osmansagar and Himayatsagar lakes are serving the drinking water needs of Hyderabad city. The lakes have been built around 1920's to cater the need of entire population of Hyderabad. Lakes are built on Musi and Musa rivers draining on southwestern part of the city. The salient features of Osmansagar lake on Musi river include storage capacity of 115 mcm at FRL 545.59 m during 1976 with a loss of about 64 mcm due to siltation. The lake has a catchment area of 736 sq km with 637 sq km of free catchment and rest has been intercepted. Himayatsagar lake on Musi river has a capacity of 115 mcm and has a catchment area of 1340 sq km. The Osmansagar and Himayatsagar lakes have been formed on 6th & 5th order streams respectively. A number of check dams have been constructed on first and second order streams under various government schemes during last 5 years. The indiscriminate constructions have resulted in reduction of storage volumes in the lakes. Lakes were receiving about 20 —25 mcm of base flow from the stream channels entering them during monsoon and up to November/December. Preliminary assessment of impact of the check dams on water resources in the catchment has showed that base flow component has reduced, whereas significant reduction in the surface runoff of streams draining into the lakes has been observed. The sustainable drinking water supply from the lakes have been at stake due to human intervention, forcing the government to search for alternate sources of drinking water supply to Hyderabad. A comprehensive watershed development programs has to be planned without endangering existing sustainable water supply sources to urban areas in the country in future. Sat, 01 Jan 2005 00:00:00 GMT http://117.252.14.250:8080/jspui/handle/123456789/3119 2005-01-01T00:00:00Z