A catchment has 4 sub areas. The annual precipitation and evaporation from each of the the sub-areas are given below. Assume that nochange in the groundwater storage on an annual basis and calculate for the whole catchment the values of annual average precipitation andevaporation. What are the annual runoff coefficients for the sub-areas and for the total catchment taken as a whole?Sub AreaArea (Mm^2).Annual Precipitation (mm).Annual Evaporation (mm).A10.70103053038304388.20900430171300600The annual average precipitation ismmThe annual average evaporation ismmRunoff coefficient @ sub area A isRunoff coefficient @ sub area B isRunoff coefficient @ sub area C isRunoff coefficient @ sub area D isTotal runoff coefficient is

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The annual average precipitation is mm The annual average evaporation is mm Runoff coefficient @ sub area A is Runoff coefficient @ sub area B is Runoff coefficient @ sub area C is Runoff coefficient @ sub area D is Total runoff coefficient is

The annual average precipitation is mm The annual average evaporation is mm Runoff coefficient @ sub area A is Runoff coefficient @ sub area B is Runoff coefficient @ sub area C is Runoff coefficient @ sub area D is Total runoff coefficient is

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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Evaporation

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Question

A catchment has 4 sub areas. The annual precipitation and evaporation from each of the the sub-areas are given below. Assume that no
change in the groundwater storage on an annual basis and calculate for the whole catchment the values of annual average precipitation and
evaporation. What are the annual runoff coefficients for the sub-areas and for the total catchment taken as a whole?
Sub Area
Area (Mm^2).
Annual Precipitation (mm).
Annual Evaporation (mm).
A
10.70
1030
530
3
830
438
8.20
900
430
17
1300
600
The annual average precipitation is
mm
The annual average evaporation is
mm
Runoff coefficient @ sub area A is
Runoff coefficient @ sub area B is
Runoff coefficient @ sub area C is
Runoff coefficient @ sub area D is
Total runoff coefficient is

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