Q.1 (A) Attempt any THREE of the following. 9 Marks a) Define irrigation and name any two multipurpose irrigation projects in Maharashtra. b) Name four cropping seasons in Maharashtra and their base period. c) Enlist two types of automatic rain gauges. Draw neat sketches. d) Explain factors affecting Runoff. e) Define i) Duty ii) Delta iii) Base Period Q2. Attempt any TWO of the following. 8 Marks a) Derive the relation between Duty and Delta. b) Name three methods of computing average annual rainfall write step wise procedure for Theissen’s polygon method. c) State any four factors affecting Duty and also state how they affect it. d) Name four engineering surveys carried out for irrigation project and their importance. e) Compare earth dam with gravity dam with respect to foundation, seepage, construction and maintenance. f) What is silting of reservoirs? State the factors affecting silting g) of reservoirs. What are the different methods to control silting of reservoir. h) Fix control levels of a medium size reservoir from the data given below: Tank losses = 20% of effective storage. Carryover allowance = 10% of gross storage. Dead storage = 10% of gross storage Effective storage required = 3000 ha.m. Assume suitable flood lift and free board. Contour (RL in m) 250 253 256 278 281 284 Storage (Mm3) 3.20 4.10 5.25 42.65 47.3 55.12
Q.1 (A) Attempt any THREE of the following. 9 Marks
a) Define irrigation and name any two multipurpose irrigation
projects in Maharashtra.b) Name four cropping seasons in
Maharashtra and their base period.c) Enlist two types of automatic
rain gauges. Draw neat sketches.d) Explain factors affecting
Runoff.e) Define i) Duty ii) Delta iii) Base PeriodQ2. Attempt any
TWO of the following. 8 Marksa) Derive the relation between Duty
and Delta. b) Name three methods of computing average annual
rainfall write step wise procedure for Theissens polygon method. c)
State any four factors affecting Duty and also state how they
affect it.d) Name four engineering surveys carried out for
irrigation project and their importance.e) Compare earth dam with
gravity dam with respect to foundation, seepage, construction and
maintenance.f) What is silting of reservoirs? State the factors
affecting siltingg) of reservoirs. What are the different methods
to control silting of reservoir.h) Fix control levels of a medium
size reservoir from the data given below:Tank losses = 20% of
effective storage. Carryover allowance = 10% of gross storage.Dead
storage = 10% of gross storage Effective storage required = 3000
ha.m.Assume suitable flood lift and free board.Contour (RL in
m)250253256278281284
Storage (Mm3)3.204.105.2542.6547.355.12
b) Find the design discharge of canal for irrigating the crops
asdetailed below.S. No. Name of crop Area under irrigation (Ha)
Duty(Ha/cumec)
