Answer Happy

5. a) Explain briefly the following terms: (CLO I/PLO 2) Specific yield, Storage co-efficient, Specific capacity, Influent and Effluent streams and Intrinsic permeability. b) A well was penetrated in a confined aquifer having a diameter 20 cm. The aquifer has a permeability of 40 m/day. The length of the strainer is 21 m. Under steady flow conditions, the drawdown of the well was found to be 3.5 m and the radius of influence was 270 m. 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. (CLO 1/PLO 2) a) What is flood routing? What is the difference between channel routing and reservoir routing? (CL02/ PLO 2) b) As a flood frequency analyst you are given the following data in the table below. Route the flood for a reach having K-22 hr. and x-0.25, using Crest Segment Method (Muskingum). (CL02/PLO 2) Time (h) 0 12 24 36 48 60 72 84 96 108 120 132 144 65 165 250 240 205 170 130 115 85 70 60 54 Inflow (cumecs) 40 What is return period and probability? Find the probability that a 30-year flood will occur in particular 10 years' period? (CL02/PLO2) (05) (15) (05) (15) (05)

National University of Computer and Emerging Sciences, Lahore Campus Course: Hydrology and Water Resource Course Code: CV 322 Program: Management BS(Civil Engineering) NOVINY Spring Semester: 2021 Duration: 3 hrs Total Marks: 80 Paper Date: Weight 70% 14th July, 2021 ALL Section: Page(s): Exam Type: FINAL Students: Name: Instruction/Notes: Roll No. Section: C-B 1. Attempt all questions. 2. Attach the question paper with answer sheet. 3. Exchange of calculators is not allowed. 4. Formula sheet is provided. 5. Graph paper is allowed. 6. Assume any missing data. 7. If any formula is missing you can use it according to your requirement. (05) Assuming dry and wet bulb temperatures of 21 and 10 °C, respectively, at a pressure of 101.325 kilopascals. Determine (a) dew point temperature (b) relative humidity (c) saturation vapor pressure and (d) actual vapor pressure in kilopascals. (CLO IPLO 2) 2. (10) You are appointed as a hydrological analyst at Mushkpuri and you are asked to calculate the amount of perceptible water available in the atmosphere at an elevation of 2000 m. Assume the lapse rate to be 6.5 °C / 1000 m. The pressure at the given location is 101 kPa. (CLO 1/PLO 2) Meal Sex lead Temp. 3. (05) a) Explain the methods of hydrograph separation, also state which is the most accurate method and why? (CLO I/PLO 2) (15) b) 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? Using the S-curve technique, find out the ordinates of 9-hour unit hydro graph. If the storm precipitation measured at a rain gauging station was equal to the last digit of your registration number, find out the DRO hydrograph and show the peak flood due to this storm. Assume base flow to be the sum of (CLO U/PLO2) last two digits of your registration number. 25 10 AV COMPUTER