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CIV321:HYDRAULIC AND IRRIGATION STRUCTURES I

L:3 T:0 P:0

Course Objectives:

• To introduce students to the engineering and scientific principles of hydrology andhydraulics and methods used to manage water resources, flood risk and to protectaquatic resources.

• To be able to qualitatively and quantitatively describe the irrigation techniques andstructures used in India and other countries.

• To be able to provide solutions for typical water resources problems found in practice.

Unit I

Surface and Ground water resources : Hydrologic cycle and its components,,Distribution of water over earth,, Characteristics of rainfall in India,, Major river basin

of India,, Need for development of water resources., Surface water and ground waterpotential of India,

Unit II

Hydrology and Abstractions from precipitation : Definition of Hydrology,Precipitation, Forms of Precipitation,, Measurement of precipitation,, Presentation ofrainfall data, Raingauge network,, Interception,, Evaporation, Factor affectingevaporation, Measurement of evaporation,, Depression storage, Infiltration,,Measurement of Infiltration by Infiltrometer,, Infiltration indices, Runoff, Estimationof design peak rate of runoff,, Stream flow measurement techniques.

Unit III

Hydrographs : Introduction, Effect of basin shape on hydrograph,, Components ofhydrograph,, Base flow separation,, Unit hydrograph, Use and limitation of unithydrograph,, Derivation of unit hydrograph,, Synthetic unit hydrograph,,Instantaneous unit hydrograph, Introduction to Ground Water Hydrology

Unit IV

Irrigation techniques and quality of irrigation water : Definition of irrigation,Necessity of irrigation in India.,, Advantage, Disadvantages and ill effects ofirrigation,, Types of irrigation,, Techniques of water distribution in farms,, Quality ofirrigation water,, definition and use of dam,, selection of the types of dam.

Unit V

Water requirements of crops : Crop period or base period,, Duty and delta of acrop,, Crop seasons and Indian agriculture.,, Optimum utilisation of irrigation water,,Irrigation efficiencies., Consumptive use or evapotranspiration (Cu),, Effective Rainfall(Re)., Consumptive Irrigation Requirement (CIR), Net Irrigation Requirement (NIR),,Factors affecting consumptive use.,, Estimation of consumptive use,, Soil-Moisture-Irrigation relationship,

Unit VI

Irrigation Channels and Canal lining : Classification of canal,, Canal alignment,,Inundation canals,, Important irrigation terminologies,, Computing the designCapacity of an irrigation canal,, Maintenance of irrigation channels,, Silt theories-Kennedy's theory,, Lacey's regime theory,, Lining of irrigation cannels, Advantages,Design and economics of canal lining

Text Books:

1 . Irrigation engineering and Hydraulic structures by Santosh Kumar Garg, khannapublisher., 25th Edition, (2013)

2 . Engineering hydrology by K.Subramanya, Tata McGraw - Hill Education, 3rdEdition, (2009)

Credits:3

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References:

1 . Applied Hydrology by Ven Te Chow, David R. Maidment and Larry W. Mays, TataMcGraw - Hill Education, 3rd Edition, (2012)

2 . Irrigation and Water Power Engineering by B.C.Punmia, LAKSHMI PUBLICATION,1st Edition, (2012)

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