24. On the Stormwater Management Plan, what do you call an anticipated rare heavy rainfall a. Overland water flow b. French drain c. 100 year ponding d. Rip-rap swale

Q: Question 2 Compute the total volume of rainfall (acre-ft) for each of the storms and watersheds: (a)…

A: Given data Depth of rainfall=3 in Drainage area= 0.25mi2 Rainfall intensity= 0.6in/hr Duration =…

Q: Design a detention basin to hold runoff from a specified storm

A: Stormwater runoff is temporarily stored in a detention basin. The basin is made to control…

Q: YEAR RAINFALL Rank 2014 2018 2771 2662.3 2 2013 2567.2 3 2019 2480.8 4 2016 2335.8 5 2021 2272.8 6…

A: Rainfall intensity is defined as the ratio of  amount (depth) of rainfall during a period to the…

Q: As a site designer, you need to calculate the volume of stormwater for a 15-acre drainage area with…

A: The objective of the question is to identify the correct method for calculating the volume of…

Q: Gross rain intensities during each hour of a 5-hr storm over a 1000-acre basin were 5, 4, 1, 3, and…

A: Given data,  Storm time = 5 hr Area under storm = 1000 acre Area of surface run-off = 375 acre-ft…

Q: Since your team is doing such an outstanding job for your client, they requested a preliminary…

A: Peak fluro = 3600 cfx at t = 3hoxExplanation:

Q: The following table displays the recorded flow rates for a net rain of 1.92 inches that occurred…

A: Data given Find : (a) UH for the water shed (b) 6- hr UH (c) Stream flow hydrograph for 24 hr

Q: a. Derive a 2-hour Unit Hydrograph for a Watershed Area of 2600 acres. The total 2 hour rainfall was…

A: Watershed area = 2600 acres2 hr rainfall = 6 inrunoff for first two hours = 0.8 in = 2.032…

Q: List seven major factors that determine a watershed’s response to a given rainfall. Explain the…

A: Various factors are there which are responsible for affecting  the rainfall discharge value in a…

Q: Using the total storm rainfall depths given, determine the average rainfall over the watershed using…

A:

Q: A 100-acre watershed that is 80% Industrial and 20% newly graded areas (no vegetation). The…

A:

Q: Read the question carefully and give me right solution according to the question. A watershed…

A: Given - 60% grass cover Group A soil P= precipitation =68mm Antecedent rainfall = 34mm in 5 days…

Q: Rainfall of magnitude 4 cm, 4 cm and 2 cm occurring on three consecutive 2-hrs durations on a…

A: Given Data Time in hrs. 0-2 2-4 4-6 P in cm 4cm 4cm 2cm Catchment area is given as 45 Km2 We…

Q: What is the exceedance probability of a 500-year rainfall event?

A:

Q: determine φ index and time of rainfall excess given surface runoff as 9.3 cm for a nine-hour storm…

A: A time corresponding to rainfall intensity have given as tabulated form and runoff is also given, it…

Q: Determine the direct runoff, the 0-index, and the excess rainfall Set hyetograph for the storm given…

A:

Q: A farm is located at longitude 121.437 degrees east and latitude 30.746 degrees sc Using ARR2016,…

A: ARR is a national guideline document, data, and software that can be used for the estimation of…

Q: 02: Table below shows a rainfall data gathered from a storm occurred on a watershed area 2851 km²…

A: This problem gives runoff and precipitation values. We will find w index and will remove below w…

Q: What is the area in acres of a watershed if a 100 acre-in. rainfall occurs during a 3-h storm with a…

A: The volume of Rainfall, V= 100 acre-in. Depth of rainfall, d= 4 inch  Duration, D= 3 hours

Q: (a) Compute the runoff from a 7-in rainfall on a 1500-acre watershed that has hydrologic soil groups…

A: Note: As per the company guidelines, we are not supposed to solve two questions at a time. So kindly…

Q: storm occurred in two similar watersheds, A and B, both having an area of 700 hectares. A is long…

A: Watershed area and peak discharge. The value of peak discharge is greatly dependent upon the shape…

Q: Determine the design flood discharge (allowing an increase of one third) for a bridge site with the…

A: Given: The catchment area is 2 x 105 ha. The duration of the storm is 8 hr. The storm precipitation…

Q: Runoff data have been collected for a 4-hour storm over a 120 acre watershed as indicated in the…

A: Given  Area = 120 acre  Phi- index = 0.1 in /hr

Q: Question 8. [2 Points] Create a 60-minute hydrograph for a 10-acre flat lawn covered with yellow…

A: 1. Calculate the runoff coefficient for yellow bluestem grass on clayey loam soil, typically around…

Q: A watershed is divided into sections as shown below. Runoff from each section will contribute to…

A:

Q: TABLE Q2(b) Rainfall Data Cumulative Cumulative Rainfall (mm) Time (mm) Rainfall (mm) Time (mm) 0-10…

A: given ; 10 minutes cumulative rainfall record  to develop rainfall intensity hyetograph with 20 min…

Q: 1.Determine the weighted curve numbers for a watershed with 40 percent residential (1/4-acre lots),…

A: ● Here in this question we have to solve the value of runoff voluma and also have to determine the…

Q: Determine the pre (C 0.3) and post development (C= 0.75) peak runoff for a 90-acre site that…

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Q: Using the total storm rainfall depths given, determine the average rainfall over the watershed using…

A: To Find :- Average rainfall over the watershed by arithmetic mean method Given data, Gauge…

Q: ver the watershed having excess rainfall of 5 cm for the first six hours and 15 cm for the second…

A: 1st storm  2nd storm  Depth runoff Base flow Direct runoff Time UHO UHO*5cm UHO*15cm Add   D…

Q: After a 2-hour storm, a station downstream from a 40 square mile drainage basin measures 9300 cfs as…

A:

Q: Calculate the runoff from a watershed of (0.01 x 4737) ha. The following data are available: Depth…

A: To find runoff

Concepts of Flood Control

Flooding is a temporary overflow of water that submerges or covers the the usually dry land. It can also be defined as the overflow of the excess amount of water that covers a huge area of land which is normally dry.