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MULUNGUSHI UNIVERSITY CIVIL ENGINEERING CIE 472-HYDROLOGY ASSIGNMENT 2 Question 1 The staff gauge readings and the corresponding discharges measured in a stream are given below. Assuming the relationship to be exponential, fit an equation by drawing a graph. What is the discharge for a staff gauge reading of 1.6 m and 2.5 m? 0.40 0.70 1.09 1.28 1.49 1.83 2.32 Gauge reading (m): Discharge (cumec): 24 47 80 98 121 163 268 Question 2 The following data are obtained by stream gauging of a river: Main gauge staff reading (m) 9.6 9.6 9.32 8.63 Auxiliary gauge staff reading (m) Discharge (cumec) 4.50 8.45 What should be the discharge when the main gauge reads 9.6 m and the auxiliary gauge reads 9.02 m? Question 3 Find the value of the constants C and n in the empirical formula Q = CN"*, where Q is the flood discharge in cumec and A is the catchment area in km² from the following data: A (km²): 4 10 50 100 200 Q (cumec): 100 158 354 500 706 Question 4 The following were the monthly evaporation data in cm in certain year (Jan.-Dec.) in the vicinity of a lake 15.7 14.1 16.9 24.0 27.5 21.4 15.7 16.2 16.2 20.5 15.7 15.4 The water spread area in the lake in the beginning of January was 3.2 km² and at the end of December 2.6 km². Calculate the loss of water in million m3 due to evaporation in that year. Assume a pan coefficient of 0.71. Due on 12/05/2022 @ 23:59 Hrs. to [email protected] NB: Late submissions will not be accepted