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1. A civil and hydrological engineer knows his area of expertise and what to do before starting any water resources project. You are appointed as new hydrologist at Jalalpur canal project. Prepare an initial geo-technical report focusing on how to determine the water absorption capacity of the soil stating the required procedure for conducting the field experimentation. Once conducted the experiment you came up with following infiltration capacity rates at various time intervals after the beginning of the storm. (CLO1) (25) (5marks for calculating the correct data, 5marks for indicating the correct procedure for determining the capacity, 5 marks for f-curve, 5 marks for Horton's equation, 5 marks for total and excess rain) Plot the f-curve and establish Horton's equation. Determine the total rain and the excess rain. Note: For every student calculate your own data following the instructions given below: P = Given Precipitation + R (last number of your registration number) For instance: if R=4616; P=5+6=11cm Infiltration capacity = Given Infiltration +R (last number of your registration number) Inf. Cap. 3.9+6=9.9 cm/hr Time (min) Precipitation (cm/hr) 1 5 2 5 3 5 5 5 5 6 7.5 8 7.5 10 7.5 12 7.5 Infiltration Capacity (cm/hr) 3.9 3.4 3.1 2.7 2.5 2.3 2 1.8 1.54

14 7.5 1.43 16 2.5 1.36 18 2.5 1.31 20 2.5 1.28 22 2.5 1.25 24 2.5 1.23 26 2.5 1.22 28 2.5 1.2 30 2.5 1.2 2. Hydrologists are supposed to design flood controlling structures. State what kind of data you need to monitor the flood peak in a river and how do you represent it graphically? The 3-hr unit hydrograph ordinates for a basin are given below. There was a storm, which commenced on July 15 at 16.00 hr and continued up to 22.00 hr, which was followed by another storm on July 16 at 4.00 hr which lasted up to 7.00 hr. It was noted from the mass curves of self-recording rain gauge that the amount of rainfall onJuly 15 was 5.75 cm from 16.00 to 19.00 hr and 3.75 cm from 19.00 to 22.00 hr, and on July 16, 4.45 cm from 4.00 to 7.00 hr. Assuming an average loss of 0.25 cm/hr and 0.15 cm/hr for the two storms, respectively, and a constant base flow of 10 cumec + R. Determine the stream flow hydrograph and state the time of occurrence of peak flood. Note: R= last digit of your registration number) (CLO2) (25 marks) Time (hr) 0 3 6 9 12 15 18 21 24 27 UH (cumecs) 0 1.5 4.5 8.6 12 9.4 4.6 2.3 0.8 0 (5 marks for stating the correct data and its representation technique, 5 for calculating correct base flow, 10 for stream flow hydrograogh and 5 for determining the peak flood time) 3. During Monson season it's important to keep monitoring the level of water in a stream in order to avoid any mishap. The following data has been collected in a stream at a gauging site. By looking at the data, identify what instrument and method has been used to measure this data. Also, compute the discharge in the stream in Cusecs. Assume the existing water level before measuring the new discharge was equal to the sum of last two digits of your registration number. For instance: R=4061; existing discharge = 7 cumecs. What will be the new discharge in cusees? (CLO 2) (25 marks) Distance from left water 0 1.5 3 4.5 6 7.5 9 edge (m) Depth (m) 0 1.3 2.5 1.7 1 0.4 0 At 0.2d 0 0.6 0.9 0.7 0.6 0.4 0 Velocity (m/s) At 0.8d 0 0.4 0.6 0.5 0.4 0.3 2/3 4. Ground water is the one which is the most exploited and being a hydrologist your focus should be on controlling the pumping of the ground water. How can you control the pumping? What field experimentation shall be done to monitor the amount of water extracted from the ground? Having said that, a well was penetrated in a confined aquifer having a diameter R (where is the sum of all digits of your registration number i.e. if your registration number is 4616; R = 17 cm). The aquifer has a permeability of 45m/day. The length of the strainer is 20 m. Under steady flow conditions, the drawdown of the well was found to be 3m and the radius of influence was 300m. What will be the discharge in Ipm? Also, draw a neat sketch of a well in a confined aquifer with all the given values labeled. (CLO1) (25marks) (5 marks for discussing the monitoring techniques, 10 for calculating the correct discharge, 5 for converting it to the Ipm and 5 for diagram) o 1 0 ...