Since your team is doing such an outstanding job for your client, they requested a preliminary evaluation to estimate flow under the highway considering the implementation of amasterplan for the entire watershed that drains to the roadway. Your team developed the unit hydrograph below for a 1 hour storm duration.Calculate the watershed response to the hyetograph provided and provide the total peak flow (cfs).Table 1. Effective PrecipitationTime[hr]P[in.]10.522.5Table 2. Unit HydrographTime[hr]QUH[cfs]00140021600380040

Peak fluro = 3600 cfx at t = 3hoxExplanation:

Answered: Since your team is doing such an…

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter16: Highway Drainage

Section: Chapter Questions

Problem 12P

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Since your team is doing such an outstanding job for your client, they requested a preliminary evaluation to estimate flow under the highway considering the implementation of a masterplan for the entire watershed that drains to the roadway. Your team developed the unit hydrograph below for a 1 hour storm duration. Calculate the watershed response to the hyetograph provided and provide the total peak flow (cfs). Table 1. Effective Precipitation Time P [hr] [in.] 1 2.0 2 0.5 Table 2. Unit Hydrograph Time [hr] Ошн [cfs] 0 0 1 400 2 1600 3 800 4 0
A 3-hour rainfall occurred at some part of IIUM Gombak Campus, over a catchment area of 160 ha. The rainfall distribution and other relevant data is given in Table 1. Calculate the runoff volume generated due to that storm event. Table 1: Data for Question 1(b) % of catchment 9-index (cm/h) Rainfall (cm) area 1st hour 2nd hour 3rd hour 20 1.00 0.8 2.3 1.5 30 0.75 0.7 2.1 2.5 1.0 50 0.50 1.0 0.8
QUESTIONS The initial rainfall intensities of a storm during dry weather flow are 12, 16, 22, 45, 42, 38, 29, 15, 18, 25, 42, 38, 24, 12 and 3 mm/hr at 20 minutes interval. The area of basin is 750 km² and p index is 18 mm/hr. What will be the runoff volume of the basin, if the initial abstraction is 10 mm?
The table below shows the observed rainfall intensity on a 2.26 km2 catchment area. Estimate the o index if the observed runoff is 282 097 m³. Time (hr) Rainfall (mm/hr) O to 2 35.6 2 to 5 58.4 5 to 7 27.9 7 to 10 17.8 10 to 12 7.6 O 25 mm/hr O 29 mm/hr O 27 mm/hr None of the choices O 23 mm/hr
Runoff data have been collected for a 4-hour storm over a 120 acre watershed as indicated in the table. If the total volume of water infiltrated during the storm was 3.0 Ac-ft and the Phi Index is 0.1 in/hr, sketch the rainfall hyetograph with EVERYTHING labeled appropriately. Also, report the depth and volume of precipitation (in inches and Ac-ft, respectively) for each 1-hour period.
After a 2-hour storm, a station downstream from a 40 square mile drainage basin measures 9300 cfs as a peak discharge and 3400 acre-feet as total runoff. Find the 2-hour unit hydrograph peak discharge.
For the given rainfall data, compute the runoff volume if the index is 0.9 in/hr. The watershed area is 0.785 mi². t(hr) 0-3 3-5 5-8 8-11 11-12 i(in/hr) 1.20 2.10 1.30 1.00 0.80
Discuss Four (4) negative and Four (4) positive impacts of flooding on the environment.
Question 8. [2 Points] Create a 60-minute hydrograph for a 10-acre flat lawn covered with yellow bluestem grass on clayey loam soil and the time of concentration = 20 minutes. A 10-year storm frequency is to be considered. Calculate the volume of the storm runoff.
The rainfall on five successive days in a catchment were measured as 3, 8, 12, 6 and 2 cm. If the total runoff at the outlet from the catchment was 15 cm, the value of the -index (in mm/hour) is (a) 0.0 (b) 1.04 (c) 1.53 (d) Sufficient information not available
02: Table below shows a rainfall data gathered from a storm occurred on a watershed area 2851 km² with direct runoff 856 m³/sec. Determine the W and index for this area and check the validity of your solution. Time (hrs) Rainfall 14.3 8.0 7.2 3.8 2.0 (mm) 1 2 3 4 5 6 7 8 1.3 1.0 0.0 9 0.8 10 11 12 13 0.0 13.9 17.2 2.0 14 15 0.9 1.5
Read the question carefully and give me right solution according to the question. A watershed received 68 mm of rain on 1 day. It has open spaces with 60% grass cover and Group A soil. Previous to this event, the watershed had received 34 mm rainfall in the past 5 days. Compute the direct runoff by using the SCS method.

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