Interference of Water Harvesting Structures on Inflow Capacity of Lake

The aim of this study is to determine impact of water harvesting structures constructed in recent past on inflow capacity of lake Fatehsagar, Udaipur. The rainfall data is collected from Irrigation Department, Udaipur and College of Technology And Engineering, Udaipur. Evaporation data was collected from College of Technology And Engineering, Udaipur. Soil Conservation Service Curve Number method was used to determine curve numbers and runoff depth distribution of the drainage area. For this, the necessary information such as hydrologic soil group, land use pattern, etc was collected from concerned departments. Information about soils of the area was collected from National Bureau of Soil Survey and Land Use Planning Regional Centre, Udaipur. The study is also followed by field survey to gather information about the water harvesting structures within catchment area of the lake. Position of water harvesting structure was located on drainage map of the lake with the help of Global Positioning System and Standard Topographic map on scale of 1:25000. Water storage capacity of these structures was calculated for last 11 years. Inflow capacity of the lake interfered by water harvesting structures in the form of their storage capacity, evaporation losses and ground water recharge was estimated. Outcome of the study will help to the policy makers in deciding whether the water conservation programs in the catchment area should be continued or not.