A 24-hr storm occurred over a catchment of 2.8 km area and the total rainfall observed was 10 cm. An infiltration capacity curve prepared had the initial infiltration capacity of 1 cm/hr and attained a constant value of 0.3 cm/hr after 15 hours of rainfall with Horton's constant k = 5 hr. An evaporation pan installed in the catchment indicated a decrease of 0.6 cm in the water level (after allowing for rainfall) during 24 hours of its operation. Other losses were found to be negligible. Determine the runoff from the catchment. Assume a pan coefficient of 0.7. O 40,320 m3 O 22,400 m3 O None of the choices O 62,720 m3 O 73,400 m2
A 24-hr storm occurred over a catchment of 2.8 km area and the total rainfall observed was 10 cm. An infiltration capacity curve prepared had the initial infiltration capacity of 1 cm/hr and attained a constant value of 0.3 cm/hr after 15 hours of rainfall with Horton's constant k = 5 hr. An evaporation pan installed in the catchment indicated a decrease of 0.6 cm in the water level (after allowing for rainfall) during 24 hours of its operation. Other losses were found to be negligible. Determine the runoff from the catchment. Assume a pan coefficient of 0.7. O 40,320 m3 O 22,400 m3 O None of the choices O 62,720 m3 O 73,400 m2
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A 24-hr storm occurred over a catchment of 2.8 km area and the total rainfall
observed was 10 cm. An infiltration capacity curve prepared had the initial
infiltration capacity of 1 cm/hr and attained a constant value of 0.3 cm/hr after 15
hours of rainfall with Horton's constant k = 5 hr '. An evaporation pan installed in
the catchment indicated a decrease of 0.6 cm in the water level (after allowing for
rainfall) during 24 hours of its operation. Other losses were found to be negligible.
Determine the runoff from the catchment. Assume a pan coefficient of 0.7.
O 40,320 m3
O 22,400 m3
O None of the choices
O 62,720 m3
O 73,400 m3
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