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Hydrology & Irrigation (October 2009)

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Total No. of Questions : 12] [Total No. of Pages : 3 [3664] - 101 P 928 B.E. (Civil) HYDROLOGY AND IRRIGATION (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer any 3 questions from each section. 2) Answers to the two sections should be written in separate answer books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) b) In a catchment area of 100 km2, the average annual precipitation at five rain gauge stations is as under Station 1 2 3 4 5 Precipitation (mm) 750 1000 900 650 500 Find number of additional rain gauge stations if permissible error is 10%. Also, find rain gauge density. [8] What is Probable Maximum Precipitation (PMP)? Explain how it is estimated? [8] OR Q2) a) b) Explain with graph the Intensity - Duration - Frequency relationship. [8] Describe Radar measurement of rainfall. Also, state names of any four methods of measurement of rainfall. [8] Q3) a) Differentiate between evaporation and evapotranspiration. Also, state Dalton s equation & explain different terms of it. [8] The average precipitation during a storm over a catchment area of 10 km2 is as follows. i) 40 mm/hr for 1 hour. ii) 60 mm/hr for 1 hour. iii) 30 mm/hr for 1 hour. If the area of hydrograph plotted with scale 1 cm = 1 hr on x axis and 1 cm = 10 m3/sec on y axis observed as 30 cm2, find index of infiltration. [8] b) P.T.O.

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Additional Info : 2003 Course
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