Question 10) What is the runoff coefficient (C) for a watershed that is 60% covered by industrial areas, 30% by lawns, and 10% by paved roads?
Q: A 6 hour storm resulted in a rainfall of 30 cm over 1000 km² area. Calculate the ø-index of the…
A: Given: Duration of storm, t = 6 h Rainfall, p = 30 cm Catchment area, A = 1000 km2 Surface runoff,…
Q: 1.2 The watershed at a site on a stream has 77000 ha area. The mean annual precipitation at this…
A:
Q: Estimate Ø-index for a watershed having an area 5 acres. The runoff volume caused by the rainfall is…
A:
Q: Homework 2 Suppose a hypothetical watershed with an impervious surface and no losses, the maximum…
A: The total amount of rainfall can be evaluated as the sum of initial losses, infiltration, runoff,…
Q: The ordiantes of a 6h-UH of a watershed having a drainage area of 393 km^2 are given below. For a…
A:
Q: '. (a) Compute the runoff from a 7-in rainfall on a 1500-acre watershed that has hydrologic soil…
A:
Q: A watershed with an area of 2500 km2 received 1.3 m of precipitation over the course of a year. The…
A: Finding out total runoff and losses.
Q: Rainfall of intensity of 20mm/h occurred over a watershed of area 100 ha for a duration of 6 h…
A: Given data : Duration (t)=6 hr Rainfall intensity =20 mm/hr Direct runoff volume=30000 m3
Q: Determine the peak runoff (Nearest whole number) from a 100-year storm for the watershed described…
A:
Q: 3. Compute the runoff from 2000 ha watershed due to 15 cm rainfall in a day. The watershed has 35%…
A: Given : As multiple question are there, so as per guidlines we are allowed to answer Question 1 at a…
Q: A 6-h storm had 6 cm of rainfall and the resulting runoff was 3.0 cm. If the index remains at the…
A:
Q: Problem 1a: For a 15-acre watershed, a time of concentration of 75 minutes, a 7" storm event, and a…
A: Peak runoff can be calculated using rational hydrograph method Discharge Q= CIA where C= Coefficient…
Q: Rainfall of intensity 20mm/h occurred over a [wa watershed of area 1km? for duration of six hours.…
A: Given,
Q: Rainfall of intensity 20 mm/h occurred over a watershed of area 1 km² for duration of six hours. It…
A: Given- Intensity of rainfall I=20 mm/hWater shed area A=1 km2duration t=6 hrsDirect runoff volume…
Q: If the cumulative distribution function of the peak runoff rate, Q (in m3/s), in any runoff event is…
A: The expression for the return period is given by, Substitute the values in the above expression.
Q: watershed with 180 hectares of area received 150 millimeter of precipitation in 1 hour 30 minutes…
A:
Q: In a given year, a watershed with an area of 2500 km'J received 130 cm of precipitation. The average…
A:
Q: A catchment area has a time of concentration of 20 minutes, an area of 20 has. and a runoff…
A:
Q: A 400 ha watershed has predominantly black cotton soil and its CN value is estimated as 73. Estimate…
A:
Q: The table below shows the observed rainfall intensity on a 2.26 km2 catchment area. Estimate the o…
A: Given data Total runoff during rainfall ( volume) = 282097 m3 Catchment area (A) = 2.26 Km2
Q: A certain watershed in Region VIII with an area of 60 ha flat heavy soil is to be converted into a…
A: To find - The percentage change in peak runoff flow rates before and after development
Q: An urban park has a drainage basin area of 398 ac. The 25-year rainfall event has a precipitation…
A: Given data: C=0.75 Average rainfall intensity, I=2.382 in. /h Drainage area, A=398 ac.
Q: The generation of runoff is a complex process that the models developed by Horton and Hewlett have…
A: a) Introduction : Runoff is water that has not been absorbed into the soil or evaporated and has so…
Q: A catchment consists of 30% area with runoff coefficient 0.40 with the remaining 70% area with…
A:
Q: The 1-hr unit hydrograph for a watershed is given below. Determine the runoff from this watershed…
A: 1. Find out the effective rainfall by subtracting the abstractions from the precipitation so as to…
Q: Which of the following favors lower runoff rate? a. Smaller catchment and slender basin b. Larger…
A:
Q: A unit hydrograph for a watershed is triangular in shape with base period of 20 hours. The…
A: given- base period T=20 hrsarea A=500 ha=500×104 m2
Q: Assume that the average annual precipitation over a watershed is 1200 mm. if 45% of this…
A:
Q: In a given year, a watershed with an area of 2000 km² received 120cm of precipitation. The average…
A:
Q: In a year, a 120 cm of rainfall received by a watershed with an area of 140 km2. The flow in the…
A:
Q: In a given year, a catchment with an area of 2500 km2 received 130 cm of precipitation. The average…
A:
Q: The recorded rainfall during a 5 hours storm over an area of 1000 km? was 60 mm. If the value of…
A: Given: Recorded rainfall, p = 60 mm Time of storm, t = 5 h Area, A = 1000 km2 Measured surface…
Q: Determine the runoff coefficient for the whole catchment. Refer to the table below to answer the…
A:
Q: Which of the options below best describe the changes to stormwater runoff after an area is…
A:
Q: 4. In a closed watershed where ground water does not cross the watershed bounda have the following…
A: given data, BF, Baseflow = 10 in/yr OF, overland flow = 2 in/yr P, rainfall = 50 in/yr ET,…
Q: A watershed is divided into sections as shown below. Runoff from each section will contribute to…
A:
Q: The runoff volume of 1.0 x106 m3 falls over a catchment area of 25 Km2. The runoff depth is
A: Given: The runoff volume is 1.0 x 106 m3. The catchment area is 25 km2.
Q: Q1. Using the data for the following storm, determine the index for a watershed of an area of 3 km?.…
A: Given data in question Time duration Area of catchment Discharge Rainfall To find out ϕ index It…
Q: Question 03 In a given year, a catchment with an area of 9536 km? received 1.3 m of precipitation.…
A: In this question, runoff coeffi=ecient can be calculated as Run-off coeffecient= Runoff…
Q: Example 4 *A small watershed is 250 ha in size has group C soil. The land cover can be classified as…
A: Area of watershed = 250ha Percentage of open forest = 30% Percentage of poor quality pasture = 70%…
Q: A watershed of (30+X) km2 was subjected to a storm of 2-h duration from which the following…
A: Given table is (storm of 2-h hydrograph) Time (hours) 0 1 2 3 4 5 6 7 8 Discharge(m3/s) 2 15 30…
Q: The observed annual runoff from a basin of area 500 km² is 150 corresponding annual rainfall over…
A: Given data- annual Runoff R=150 Mm3area a=500 km2Annual rainfall P=750 mmTo Find-runoff coefficient…
Q: Hydrology 1. What is watershed simulation? Explain briefly the various stages in the simulation…
A:
Q: Balili watershed with 180 hectares of area received 150 millimeter of precipitation in 1 hour 30…
A: Given:- Area of watershed = 180 hectares Precipitation = 150 millimeter Time of precipitation = 1…
Q: Stream runoff from a 1500 acre watershed is plotted and charted below for a storm having an…
A: Solution: water shed area=1500 Acre Time Stream Flow Base Flow Ordinates of DRH of 2 hr. 0 20…
Q: H.W: The table below represents a direct hydrograph resulted from two consecutive storms each of 1…
A: Following are the ordinates of (1 hr + 1hr = 2 hr) complex hydrograph (CH) with runoff = 1 cm + 2cm…
Q: 4.If the mean annual runoff of a drainage basin of 15,000 km2 is 165 m3/s, and the average annual…
A:
Q: The table below shows the observed rainfall intensity on a 2.26 km2 catchment area. Estimate the o…
A:
Q: 1. The 1-hr unit hydrograph for a watershed is given below. Determine the runoff for the third time…
A: Given data Abstraction rate = 0.3 in/hr
Question 10)
What is the runoff coefficient (C) for a watershed that is 60% covered by industrial areas, 30% by lawns, and 10% by paved roads?
Trending now
This is a popular solution!
Step by step
Solved in 5 steps
- What is the runoff coefficient (C) for a watershed that is 25% covered by apartments, 65% by forest, and 10% by paved roadRainfall intensity of a rural catchment is 50 mm/hr. The percentage contributions of catchment relief, catchment storage and ground characteristics in the calculation of runoff coefficient are 0, 5 and 30 respectively. What is the value of the S0-year ARI runoff coefficient (C) of this catchment? Write your answer correct to two decimal place.A 6 hour storm has 6 cm of rainfall and the resulting runoff was 3 cm. if the phy index remains at the same value, which one of the following is the runoff due to 12 cm of rainfall in 9 hours in the catchment?
- Rainfall of intensity of 20mm/h occurred over a watershed of area 100 hafor a duration of 6 h measured direct runoff volume in the stream drainingthe watershed was found to be 30,000 cubic meters. What is theprecipitation not available for runoff in this case?In a year, a 120 cm of rainfall received by a watershed with an area of 140 km2. The flow in the stream draining the watershed was found to have an average rate of 2.0 m3/s for 3 months, 3.0 m3/s for 6 months and 5.0 m3/s for 3 months. a.) what is the total outflow volume within the period in m3? b.) what is the runoff coefficient of the watershed? c.) if the afforestation of the watershed reduces the runoff coefficient to 0.50, what is the increase in the abstraction from precipitation due to infiltration, evaporation and transpiration, for the same annual rainfall of 120 cm (in m3)?A catchment area of 150 km2 received 150 cm of rainfall in a year. At the outlet of the catchment, the flow in the stream draining the catchment was found to have an average rate of (i) 2.0 m3/s for 3 months, (ii) 3.02 m3/s for 6 months, and (iii) 5.02 m3/s for 3 months. (a) What is the runoff coefficient of the catchment? (ii) If the afforestation of the catchment reduces the runoff coefficient to 0.35, what is the increase in the abstraction from precipitation due to infiltration, evaporation and transpiration for the same annual rainfall of 150 cm? please convert in m/s
- Three cm of rain falls on a 20,000 hectares catchment area during a 24 hours period. If 70% of rainfall runs off, calculate the average rate of runoff in m3/s if runoff lasts for 72 hours. Show complete solution.The ordiantes of a 6h-UH of a watershed having a drainage area of 393 km^2 are given below. For a storm over the watershed having excess rainfall of 5cm for the first six hours and 15cm for the second six hours, compute the direct runoff hydrograph ordiantes and plot the hydrograph. (List all the DRH ordiantes in order)Calculate the amount of rainfall that occurred over a catchment of 200 km2 which resulted in a runoff volume of 20 m3/s. Assume that 70% of the rainfall coverts to runoff.
- During a flood in a catchment, when all streams are filled with water, the runoff value is ? A- at the rising limb of the hydrograph. B- at the falling limb of the hydrograph. C- at the falling limb of the hydrograph. D- at the second base flow recession part. What is the correct answer??The following table gives the measured rainfall and surface runoff from a 65-acre watershed. Values given are averages over the time interval. Compute the accumulated storage (ft3) of water within the watershed. Plot on the same graph the inflow, outflow, and cumulative storage as a function of timeIn a given year, a watershed with an area of 2500 km'J received 130 cm of precipitation. The average rate of flow measured in a gage at the outlet of the watershed was 30 m3/sec. Estimate the water losses due to the combined effects of evaporation, transpiration, and infiltration due to ground water. How much runoff reached the river for the year (i n cm)?