A catchment area of 140km2 recieve 120 cm of rainfall in a year. at the outlet of the catchment the flow in the stream draining sa catchment watch found to have have an average rate of 2.0 m^3 /s for 3 months 3.0 m^3 /s for 6 months and 5.0 m^3/s for 6 months and 5.0 m^3/s for 3 months a. what is the runoff coefficient for the catchment? b.if the afforestation of the catchment reduces of the runoff coefficient to 0.50, what is the increase in the abstraction from precipitition due to infiltration evaporation and transpiration for the same annual raindall of 120cm
A catchment area of 140km2 recieve 120 cm of rainfall in a year. at the outlet of the catchment the flow in the stream draining sa catchment watch found to have have an average rate of 2.0 m^3 /s for 3 months 3.0 m^3 /s for 6 months and 5.0 m^3/s for 6 months and 5.0 m^3/s for 3 months a. what is the runoff coefficient for the catchment? b.if the afforestation of the catchment reduces of the runoff coefficient to 0.50, what is the increase in the abstraction from precipitition due to infiltration evaporation and transpiration for the same annual raindall of 120cm
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A catchment area of 140km2 recieve 120 cm of rainfall in a year. at the outlet of the catchment the flow in the stream draining sa catchment watch found to have have an average rate of 2.0 m^3 /s for 3 months 3.0 m^3 /s for 6 months and 5.0 m^3/s for 6 months and 5.0 m^3/s for 3 months
a. what is the runoff coefficient for the catchment?
b.if the afforestation of the catchment reduces of the runoff coefficient to 0.50, what is the increase in the abstraction from precipitition due to infiltration evaporation and transpiration for the same annual raindall of 120cm
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