The drainage basin of a river has a total area of 840km², and it is covered by four rain stations W, I, P and S. The percentage of the area covered by each station is 30%, 25%, 35% and 10% respectively. For the whole year of 2019, these four stations recorded the following monthly rainfall depths in mm. Month STATION Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 63 105 112 80 110 68 58 55 27 18 11 22 69 110 130 88 107 70 62 61 34 22 7 25 81 145 122 93 125 79 66 58 29 19 12 18 S 76 137 143 100 119 82 70 67 40 10 16 Determine the following: 1. Point annual rainfall depth in station I in mm? 2. Annual rainfall depth in mm? 3. Annual volume of rain on the river basin in m³ . 4. Annual volume of runoff discharge, if the average annual discharge of runoff at the basin outlet is 8.3 m³/s. 5. Annual runoff coefficient. 6. Volume of hydrological losses on the river basin. 7. Actual evapotranspiration if the hydrological losses from infiltration and underground percolation are 45% of the total rainfall. 8. Maximum monthly rainfall depth in the river basin for the year 2019?

The drainage basin of a river has a total area of 840km², and it is covered by four rain stations W, I, P and S. The percentage of the area covered by each station is 30%, 25%, 35% and 10% respectively. For the whole year of 2019, these four stations recorded the following monthly rainfall depths in mm. Month STATION Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 63 105 112 80 110 68 58 55 27 18 11 22 69 110 130 88 107 70 62 61 34 22 7 25 81 145 122 93 125 79 66 58 29 19 12 18 S 76 137 143 100 119 82 70 67 40 10 16 Determine the following: 1. Point annual rainfall depth in station I in mm? 2. Annual rainfall depth in mm? 3. Annual volume of rain on the river basin in m³ . 4. Annual volume of runoff discharge, if the average annual discharge of runoff at the basin outlet is 8.3 m³/s. 5. Annual runoff coefficient. 6. Volume of hydrological losses on the river basin. 7. Actual evapotranspiration if the hydrological losses from infiltration and underground percolation are 45% of the total rainfall. 8. Maximum monthly rainfall depth in the river basin for the year 2019?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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