a) Determine the unit hydrograph for Gilmore Creek from the observed runoff (note:the area of the watershed is 8.95 mi?). Assume that this unit hydrograph resultedfrom a 0.5-hour period of uniform rainfall excess.TIME, hr Q, cfs12.4DATETIME, hr Q, cfsDATE31-Jul163.92 31-Jul21.5221216.53122.51217137017.527023121810023.511.6518.5482411.319341-Aug0.510.7519.526.6110.220241.59.5220.516.928.852112.82.58.47.96

Solution For finding the unit hydrograph first find the Direct runoff hydrograph(DRH). For DRH,…

a) Determine the unit hydrograph for Gilmore Creek from the observed runoff (note: the area of the watershed is 8.95 mi²). Assume that this unit hydrograph resulted from a 0.5-hour period of uniform rainfall excess. TIME, hr Q, cfs 3.92 TIME, hr Q, cfs 12.4 DATE DATE 31-Jul 16 31-Jul 21.5 16.5 31 22 12 17 1370 22.5 12 17.5 270 23 12 18 100 23.5 11.65 18.5 48 24 11.3 19 34 1-Aug 0.5 10.75 19.5 26.6 1 10.2 20 24 1.5 9.52 20.5 16.9 8.85 12.8 2.5 8.4 7.96

a) Determine the unit hydrograph for Gilmore Creek from the observed runoff (note: the area of the watershed is 8.95 mi²). Assume that this unit hydrograph resulted from a 0.5-hour period of uniform rainfall excess. TIME, hr Q, cfs 3.92 TIME, hr Q, cfs 12.4 DATE DATE 31-Jul 16 31-Jul 21.5 16.5 31 22 12 17 1370 22.5 12 17.5 270 23 12 18 100 23.5 11.65 18.5 48 24 11.3 19 34 1-Aug 0.5 10.75 19.5 26.6 1 10.2 20 24 1.5 9.52 20.5 16.9 8.85 12.8 2.5 8.4 7.96

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter16: Highway Drainage

Section: Chapter Questions

Problem 11P

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