Introduction - hydrologic cycle – catchment - stream patterns - description of the basin - hydrometeorology - constituents and vertical structure of atmosphere - general circulation - transitory systems - meteorological observations - formation of precipitation, types of precipitation, forms of precipitation, climate and weather seasons in India, rainfall variations, measurement, presentation of rainfall data, mean precipitation, abstractions from precipitation, evapotranspiration, runoff, hydrograph – concepts, assumptions and limitations of unit hydrograph. Ground water - aquifer types - flow of ground water – well hydraulics - types of wells - other sources of ground water. Irrigation - total planning concept - water requirements of crops - command area – duty-delta. Irrigation efficiency - irrigation requirement of crops.
Reservoir planning - site investigation - zones of storage - Reservoir yield - Estimation of Reservoir Capacity - Reservoir Sedimentation - Reservoir losses and control - Life of Reservoir. Diversion headworks - Types of diversion works - location of canal headworks - components of headworks - weir and barrages – causes of failure of weirs on permeable foundation and their remedies - criteria for the design of weirs and barrages – Design of impervious floor for subsurface flow - Bligh’s creep theory – Khosla’s theory design procedure. Dams - Types of dams and their selection - Gravity dam, arch dam, buttress dam, earth dams. Gravity dam - analysis and design. Spillways - Different types and suitability – Energy dissipation structures below spillway.
Canal Regulation structures - intake structures, canal falls - canal regulators - canal escapes - Tank irrigation - Surplussing arrangements in minor irrigation tanks - Metering flumes - canal outlets – outlet works through dams and river intakes - cross drainage works-types and selection of type of cross drainage works. Design and detailing of surplus weir, canal regulator and canal drop.