Civil Engineering) The ordinates at 1-hr intervals of a 1-hr unithydrograph are 15, 33, 56, 72, 44, 23, and 12cms/mm. Determine the direct runoffhydrograph from a 3-hr storm in which 2 mm ofexcess rainfall occurred in the first hour, 1 mmthe second hour, and 1.5 mm the third hour.What is the area of the watershed in km2?

Given ordinates of 1 hr intervals First runoff R1 = 2 mm Second Runoff R2 = 1 mm Third runoff R3 =…

vil Engineering The ordinates at 1-hr intervals of a 1- ydrograph are 15, 33, 56, 72, 44, 23, ms/mm. Determine the direct runoff ydrograph from a 3-hr storm in whic xcess rainfall occurred in the first ho he second hour, and 1.5 mm the third Vhat is the area of the watershed in k

vil Engineering The ordinates at 1-hr intervals of a 1- ydrograph are 15, 33, 56, 72, 44, 23, ms/mm. Determine the direct runoff ydrograph from a 3-hr storm in whic xcess rainfall occurred in the first ho he second hour, and 1.5 mm the third Vhat is the area of the watershed in k

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter16: Highway Drainage

Section: Chapter Questions

Problem 7P

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Concept explainers

Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

Question

Civil Engineering
) The ordinates at 1-hr intervals of a 1-hr unit
hydrograph are 15, 33, 56, 72, 44, 23, and 12
cms/mm. Determine the direct runoff
hydrograph from a 3-hr storm in which 2 mm of
excess rainfall occurred in the first hour, 1 mm
the second hour, and 1.5 mm the third hour.
What is the area of the watershed in km2?

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