Hydrology & Water Resources Engineering - Dec 2014
Civil Engineering (Semester 5)
TOTAL TIME: HOURS
1 (a) Discuss various causes of drought.(7 marks) 1 (b) Discuss water resources planning and its objectives.(7 marks) 2 (a) Explain the methods of estimating flood.(7 marks) 2 (b) Describe the flood routing with neat sketch.(7 marks)
Differentiate between following
2 (c) 1 Flood proofing and Flood forecasting(4 marks)
2 (c) 2 Flood walls and Flood ways.(3 marks)
3 (a) Describe the process of the hydrological cycle with a neat sketch(7 marks)
3 (b) In a watershed, the average annual precipitation for four sub-basins was recorded as follows: 100.84,112.27,84.84 & 73.406 cm. the areas of the sub-basins were : 93264.3, 71243.5, 108808.2 & 168393.8 ha., calculate the average precipitation of the total watershed using the Thiessen method.(7 marks)
3 (c) Discuss the various methods used to measure rate of evaporation from a reservoir.(7 marks)
3 (d) The excess rainfall (direct runoff ) produced from a 10.0 cm rainfall of a storm is 6.0
cm. the rainfall at each hour of the storm recorded by a rain gauge is as under.
Calculate the infiltration index of the storm.
|Incremental rainfall (cm)||0.1||1.0||1.4||2.6||2.0||1.5||1.0||0.4|
<colgroup span="14" style="text-align: center;" width="85"> </colgroup>
|Direct runoff (m3/s)||0||25||175||320||360||310||230||165||105||60||30||10||0|