ENGG-121

ENGG 121 : SOIL AND WATER CONSERVATION ENGINEERING
Credit: 2(1+1)

THEORY:
Introduction of soil and water conservation – definition and scope, causes of soil erosion, types, geological and accelerated soil erosion, Accelerated soil erosion – water and wind erosion definitions, Forms of water erosion, Wind erosion : Principle, mechanics, types of soil movement, Land use capability classification and planning, erosion control measures – Agronomical and Engineering measures (examples on grassed waterways) Contouring, strip cropping, contour bunds, graded bunds, terracing, waterways , Gully development classification and control measures : Temporary and permanent structures , Soil loss estimation by USLE (examples), Hydrological cycle, Runoff: Definition, types, factors affecting, estimation. Examples on rational formula, Water harvesting and its techniques, types (examples on capacity), Introduction of surveying: definitions, object of surveying, use of surveying, classification of surveying and principles of surveying, Watershed: definition, characteristics, deterioration, classification, Watershed management: definition and objects, steps of watershed management, Watershed monitoring and evaluation.

PRACTICALS:
General status of soil conservation in India, Study of surveying instruments, Study of leveling instruments, Chain triangulation survey, Plane table survey, Estimation of runoff by rational method, Estimation of soil loss (USLE), Measurement of soil loss (multi slot divisor), Study of grassed waterway, Study of graded bunds, Study of contour bund and compartmental bunding, Study of terrace, Study of CCT and staggered trenches, Study of gully control structures (KT weir, Drop spillway, earthen nala bund), Determination of pond capacity, Visit to a developed watershed

Practicals (Experiments):
1) General status of soil conservation in India
2) Study of surveying instruments
3) Study of leveling instruments
4) Chain triangulation survey
5) Plane table survey
6) Estimation of runoff by rational method
7) Estimation of soil loss (USLE)
8) Measurement of soil loss (multi slot divisor)
9) Study of grassed waterway
10) Study of graded bunds
11) Study of contour bund and compartmental bunding
12) Study of terrace
13) Study of CCT and staggered trenches
14) Study of gully control structures (KT weir, Drop spillway, Earthen Nala bund)
15) Determination of pond capacity
16) Visit to a developed watershed