Water Resource Engineering (CE-603 (A)) - Important Questions

Define field capacity and wilting coefficient (permanent wilting point) and explain their significance in irrigation scheduling.

Explain methods to improve / enhance the duty of water in irrigation systems.

Explain different surface and subsurface methods of irrigation and their suitability for different soils and crops.

Define consumptive use of water and explain methods for its determination.

Explain the causes and effects of salt efflorescence and its impact on soil quality and crop productivity.

Discuss the necessity of groundwater recharge and describe methods for improving groundwater storage and recharge.

When 3.68 million m3 of water was pumped out from an unconfined aquifer of 6.2 km2 area extent, the water table was observed to go down by 2.6 m. Determine the specific yield of the aquifer.

Rain gauge stations A, B, C, D, E and F have normal annual rainfall of 620, 564, 478, 616, 573 and 392 mm respectively. During a storm, stations B, C, D, E and F recorded 22, 29, 35, 13 and 25 mm respectively. Estimate the missing storm rainfall at station A by arithmetic average and normal-ratio methods.

Explain the methods for measuring precipitation/rainfall and the types/differences of recording and non-recording rain gauges.

Explain the concept of unit hydrograph and give the steps to derive a unit hydrograph from an observed runoff hydrograph.

Define infiltration and explain the various factors affecting infiltration.

Compare / discuss Kennedy's theory and Lacey's theory for canal design, including limitations.

Design an irrigation channel by Kennedy's theory to carry a discharge of 5 cumecs. Take m = 1.0, N = 0.0225 and B/D ratio = 4.40.

Design an irrigation canal using Lacey's theory for the following data: Discharge = 55 cumecs, Silt factor = 1.6, Side slope = 0.5H:1V.

Describe / explain different types of canal irrigation hydraulic structures such as head regulator, cross regulator, escape, fall and outlet.

Explain various flood control measures including structural and non-structural measures for control and regulation of flood waters.