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UNIT-I
IrrIgatIon
Necessity and Importance, Principal Crops and Crop seasons, Types, Methods of applications, Soil-waterplant relationship, Soil moisture constants, Consumptive use, Estimation of consumptive use, Crop water
requirement, Duty and delta, Factors affecting duty, Depth and frequency of irrigation, Irrigation efficiencies,
Water logging and drainage, Standards of quality of irrigation water, Crop rotation.
UNIT-II
Canals
Classification, Design of non-erodible canals – Methods of economic section and maximum permissible
velocity, Economics of canal lining, Design of erodible canals – Kennedy’s silt theory and Lacey’s regime
theory, balancing depth of cutting.
Canal struCtures
Falls : Types and location, Design principles of Sarda type fall and straight glacis fall.
regulators : Head and cross regulators, Design principles.
Cross Drainage Works : Types, Selection, Design principles of aqueduct, siphon aqueduct and super
passage.
outlets : Types, Proportionality, Sensitivity and flexibility.
UNIT-III
DIversIon HeaD Works
Types of diversion head works, Weirs and barrages, Layout of diversion head works, Components, Causes
and failures of weirs on permeable foundations, Bligh’s creep theory, Khosla’s theory, Design of impervious
floors for subsurface flow, Exitgradient.
UNIT-IV
reservoIr PlannIng
Investigations, Site selection, Zones of storage, Yield and storage capacity of reservoir, Reservoir
sedimentation.
Dams : Types of dams, Selection of type of dam, Selection of site for a dam.
gravity Dams : Forces acting on a gravity dam, Causes of failure of a gravity dam, Elementary profile and
practical profile of a gravity dam, Limiting height of a dam, Stability analysis, Drainage galleries, Grouting.
UNIT-V
eartH Dams
Types, Causes of failure, Criteria for safe design, Seepage, Measures for control of Seepage – Filters,
Stability analysis – Stability of downstream slope during steady seepage and upstream slope during
sudden drawdown conditions.
spillways : Types, Design principles of a Ogee spillways, Types of spillway crest gates, Energy dissipation
below spillways – Stilling basin and its appurtenances