Taal lake has five sub areas covering its entire catchment surface area. Its water surface elevation is 640m above mean sea level. During a storm event, data given below was recorded. Calculate the new water surface elevation after the storm event. Assume that there is no contribution to or from evaporation & infiltration. Sub Areas Area (km^2) Outflow runoff (cm) Inflow runoff (cm) PH Rainfall Advisory Talisay 58.55 61.00 42.00 RED San Nicholas 81.97 39.00 45.00 ORANGE Laurel 35.13 20.00 47.00 YELLOW Agoncillo 18.74 52.00 126.00 ORANGE Balete 39.81 32.00 20.00 RED The average outflow runoff is cm The average inflow runoff is cm The mean precipitation using Thiessen polygon method is mm The mean precipitation using arithmetic mean method is mm The new water surface elevation is m

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Taal lake has five sub areas covering its entire catchment surface area. Its water surface elevation is 640m above mean sea level. During a storm
event, data given below was recorded.
Calculate the new water surface elevation after the storm event. Assume that there is no contribution to or from evaporation & infiltration.
Sub Areas
Area (km^2)
Outflow runoff (cm)
Inflow runoff (cm)
PH Rainfall Advisory
Talisay
58.55
61.00
42.00
RED
San Nicholas
81.97
39.00
45.00
ORANGE
Laurel
35.13
20.00
47.00
YELLOW
Agoncillo
18.74
52.00
126.00
ORANGE
Balete
39.81
32.00
20.00
RED
The average outflow runoff is
cm
The average inflow runoff is
cm
The mean precipitation using Thiessen polygon method is
mm
The mean precipitation using arithmetic mean method is
mm
The new water surface elevation is
m
Transcribed Image Text:Taal lake has five sub areas covering its entire catchment surface area. Its water surface elevation is 640m above mean sea level. During a storm event, data given below was recorded. Calculate the new water surface elevation after the storm event. Assume that there is no contribution to or from evaporation & infiltration. Sub Areas Area (km^2) Outflow runoff (cm) Inflow runoff (cm) PH Rainfall Advisory Talisay 58.55 61.00 42.00 RED San Nicholas 81.97 39.00 45.00 ORANGE Laurel 35.13 20.00 47.00 YELLOW Agoncillo 18.74 52.00 126.00 ORANGE Balete 39.81 32.00 20.00 RED The average outflow runoff is cm The average inflow runoff is cm The mean precipitation using Thiessen polygon method is mm The mean precipitation using arithmetic mean method is mm The new water surface elevation is m
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