Homework Answers
Unit hydrographs are lagged and multiplied by excess rainfall. Note area B does not contribute as no runoff is there.
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Lagged and computed with effective rainfall |
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0 |
0 |
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0.5 |
0 |
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|
1 |
0 |
0 |
0 |
|||
|
1.5 |
12 |
0 |
57.6 |
69.6 |
||
|
2 |
19.5 |
18 |
84 |
121.5 |
||
|
2.5 |
55.2 |
29.25 |
96 |
180.45 |
||
|
3 |
39 |
82.8 |
31.2 |
153 |
||
|
3.5 |
22 |
58.5 |
0 |
80.5 |
||
|
4 |
9 |
33 |
0 |
42 |
||
|
4.5 |
0 |
13.5 |
0 |
13.5 |
||
|
0 |
0 |
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|
0 |
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|
combined hydrograph |
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0 |
0 |
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0.5 |
0 |
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|
1 |
69.6 |
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|
1.5 |
121.5 |
|||||
|
2 |
180.45 |
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|
2.5 |
153 |
|||||
|
3 |
80.5 |
|||||
|
3.5 |
42 |
|||||
|
4 |
13.5 |
|||||
|
4.5 |
0 |
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Question. 2 (10 marks) (CLO 5 50%, CLO6 20% and CLO7 30%) Part. 1. (5 marks)...
2. A 10-minute unit hydrograph (UH) of a catchment is given in the table below. What...
2. A 10-minute unit hydrograph (UH) of a catchment is given in the table below. What is the catchment area? (5 marks) Time step (10 minutes) 1 2 3 4 Discharge (mº/{s.cm)) 8 18 30 10 For a storm partern given in the table below, determine and plot runoff hydrograph at a 5-minute interval using the above 10-minute UH. Determine the time of concentration of the catchment. Assume the o index value for the catchment to be 12 mm/hr, and...
1. (25pts) The following data show the rainfall distribution of a 60-min storm: If the infiltration...
1. (25pts) The following data show the rainfall distribution of a 60-min storm: If the infiltration capacity can be described by the following Horton parameters: f= 550 mm/h, fc= 30 mm/h, and k= 0.5 min", determine: a) when the runoff starts (5pts). b) the cumulative infiltration amount for the whole storm (20 pts). Interval (min) Average rainfall (mm/h) 0-10 10-20 20-30 30-40 40-50 50-60
*JJ 19-3 Try your hand at modeling runoff in a very simple way. Runoff (Q) is...
*JJ 19-3 Try your hand at modeling runoff in a very simple way. Runoff (Q) is the volumetric flow resulting from what is called "excess precipitation" (precipitation minus abstractions). For this problem, the only abstraction is infiltration. Calculate runoff in m/h assuming a 1.0-hectare area (10,000 m2) divided into half permeable and half impermeable (no infiltration) areas. For the permeable area, use the following Horton parameters: fo-2.0 cm/hr, f-0.3 cm/h, k-2.5 h'. Apply a constant 0.4 cm/h rainfall. If the...
ull peal - OX Share Comments AutoSave Off 2 0 - Quiz 3_2 (1) - Compatibility...
ull peal - OX Share Comments AutoSave Off 2 0 - Quiz 3_2 (1) - Compatibility Mode - Word Search File Home Insert Design Layout References Mailings Review View Help Times New Rom 12 AA Aa A Eva EE 7 AL | Paste BI U veb xx? APA SIE DI La АаВЬСc) АаВЬСcІ Аавьсс Аавьссс Аав — Heading 1 1 Normal 1 No Spac.. Heading 2 Title sinca nasce Aabe Find Sc Replace h Select Dictate Sensitivity Editor Clipboard Font...
3. A soil has the following Horton parameters: fo- 2.0 cm/hr, fe 1.0 cm/hr, k -0.60...
3. A soil has the following Horton parameters: fo- 2.0 cm/hr, fe 1.0 cm/hr, k -0.60 1/hr. If a constant intensity rainfall of 1.5 cm/hr falls for 5 hours, model the infiltration rate (f) and cumulative infiltration (F) as a function of time for the entire storm. Use 0.25 hour time increment. Your solution should include the following [35 points: a. A graph of infiltration rate vs. time for zero to five hours. b. A graph of cumulative infiltration vs....
2. A watershed is approximately 43 sq.miles. Time for each area to outlet is given in Table 1. In...
2. A watershed is approximately 43 sq.miles. Time for each area to outlet is given in Table 1. In this watershed, a storm happened as given in hyetograph. Find the resulting hydrograph. Time to outlet Area sq.miles Time to1 outlet (hr) Rainfall hyetograph Time A3-9 A4-13 2 0-2 hrs 2-3 hrs 1 Rainfall (in/hr) 1 A1 A2 A4 A3
2. A watershed is approximately 43 sq.miles. Time for each area to outlet is given in Table 1. In this watershed,...
Can you please show work for both questions 3 and 4 3. A soil has the...
Can you please show work for both questions 3 and 4
3. A soil has the following Horton parameters: fo- 2.0 cm/hr, fe 1.0 cm/hr, k -0.60 1/hr. If a constant intensity rainfall of 1.5 cm/hr falls for 5 hours, model the infiltration rate (f) and cumulative infiltration (F) as a function of time for the entire storm. Use 0.25 hour time increment. Your solution should include the following [35 points: a. A graph of infiltration rate vs. time for...
10 5 The total rainfall hyetograph of a storm, which took place over a basin is...
10 5 The total rainfall hyetograph of a storm, which took place over a basin is given below. Ordinates of Total Storm Hydrograph (TSH) obtained for the basin is given in the table below. The baseflow is constant and is 3 m/s. If the depth of excess rainfall is 6 cm, determine: a) depth of direct runoff, i (mm/hr) b) depth of infiltrated water, c) -index, d) equation of surface runoff hydrograph in terms of UH3 and lag times. e)...
Take class no. = 180 Q. No. 3 For a watershed comprising of 5000+Your Class No....
Take class no. = 180
Q. No. 3 For a watershed comprising of 5000+Your Class No. hectares in area, the rainfall and runoff data are summarized below in the table. The maximum runoff rate was recorded as 4.82 m/s at hour 9 on the second day. Compute; a) 6-hr unit hydrograph, b) 12-hr unit hydrograph, c) A runoff hydrograph for the complex rain sequence as: 6-hr rainfall with rainfall intensity of 2mm/hr, followed by 6-hr rainfall with rainfall intensity of...
Assume that the time evolution of the infiltration capacity for a given soil is governed by...
Assume that the time evolution of the infiltration capacity for a given soil is governed by Horton's 2. equation. For this soil, the asymptotic or final equilibrium infiltration capacity isfe = 0.75 cm/hr, the initial infiltration capacity is fo 5 cm/hr, and the rate of decay of infiltration capacity parameter is k- 4 hr'. For the precipitation hyetograph tabulated below, carry out a complete infiltration analysis, including evaluation of the temporal evolution of the actual infiltration rate, actual cumulative infiltration...
2. A 10-minute unit hydrograph (UH) of a catchment is given in the table below. What is the catchment area? (5 marks) Time step (10 minutes) 1 2 3 4 Discharge (mº/{s.cm)) 8 18 30 10 For a storm partern given in the table below, determine and plot runoff hydrograph at a 5-minute interval using the above 10-minute UH. Determine the time of concentration of the catchment. Assume the o index value for the catchment to be 12 mm/hr, and...
1. (25pts) The following data show the rainfall distribution of a 60-min storm: If the infiltration capacity can be described by the following Horton parameters: f= 550 mm/h, fc= 30 mm/h, and k= 0.5 min", determine: a) when the runoff starts (5pts). b) the cumulative infiltration amount for the whole storm (20 pts). Interval (min) Average rainfall (mm/h) 0-10 10-20 20-30 30-40 40-50 50-60
*JJ 19-3 Try your hand at modeling runoff in a very simple way. Runoff (Q) is the volumetric flow resulting from what is called "excess precipitation" (precipitation minus abstractions). For this problem, the only abstraction is infiltration. Calculate runoff in m/h assuming a 1.0-hectare area (10,000 m2) divided into half permeable and half impermeable (no infiltration) areas. For the permeable area, use the following Horton parameters: fo-2.0 cm/hr, f-0.3 cm/h, k-2.5 h'. Apply a constant 0.4 cm/h rainfall. If the...
ull peal - OX Share Comments AutoSave Off 2 0 - Quiz 3_2 (1) - Compatibility Mode - Word Search File Home Insert Design Layout References Mailings Review View Help Times New Rom 12 AA Aa A Eva EE 7 AL | Paste BI U veb xx? APA SIE DI La АаВЬСc) АаВЬСcІ Аавьсс Аавьссс Аав — Heading 1 1 Normal 1 No Spac.. Heading 2 Title sinca nasce Aabe Find Sc Replace h Select Dictate Sensitivity Editor Clipboard Font...
3. A soil has the following Horton parameters: fo- 2.0 cm/hr, fe 1.0 cm/hr, k -0.60 1/hr. If a constant intensity rainfall of 1.5 cm/hr falls for 5 hours, model the infiltration rate (f) and cumulative infiltration (F) as a function of time for the entire storm. Use 0.25 hour time increment. Your solution should include the following [35 points: a. A graph of infiltration rate vs. time for zero to five hours. b. A graph of cumulative infiltration vs....
2. A watershed is approximately 43 sq.miles. Time for each area to outlet is given in Table 1. In this watershed, a storm happened as given in hyetograph. Find the resulting hydrograph. Time to outlet Area sq.miles Time to1 outlet (hr) Rainfall hyetograph Time A3-9 A4-13 2 0-2 hrs 2-3 hrs 1 Rainfall (in/hr) 1 A1 A2 A4 A3
2. A watershed is approximately 43 sq.miles. Time for each area to outlet is given in Table 1. In this watershed,...
Can you please show work for both questions 3 and 4
3. A soil has the following Horton parameters: fo- 2.0 cm/hr, fe 1.0 cm/hr, k -0.60 1/hr. If a constant intensity rainfall of 1.5 cm/hr falls for 5 hours, model the infiltration rate (f) and cumulative infiltration (F) as a function of time for the entire storm. Use 0.25 hour time increment. Your solution should include the following [35 points: a. A graph of infiltration rate vs. time for...
10 5 The total rainfall hyetograph of a storm, which took place over a basin is given below. Ordinates of Total Storm Hydrograph (TSH) obtained for the basin is given in the table below. The baseflow is constant and is 3 m/s. If the depth of excess rainfall is 6 cm, determine: a) depth of direct runoff, i (mm/hr) b) depth of infiltrated water, c) -index, d) equation of surface runoff hydrograph in terms of UH3 and lag times. e)...
Take class no. = 180
Q. No. 3 For a watershed comprising of 5000+Your Class No. hectares in area, the rainfall and runoff data are summarized below in the table. The maximum runoff rate was recorded as 4.82 m/s at hour 9 on the second day. Compute; a) 6-hr unit hydrograph, b) 12-hr unit hydrograph, c) A runoff hydrograph for the complex rain sequence as: 6-hr rainfall with rainfall intensity of 2mm/hr, followed by 6-hr rainfall with rainfall intensity of...
Assume that the time evolution of the infiltration capacity for a given soil is governed by Horton's 2. equation. For this soil, the asymptotic or final equilibrium infiltration capacity isfe = 0.75 cm/hr, the initial infiltration capacity is fo 5 cm/hr, and the rate of decay of infiltration capacity parameter is k- 4 hr'. For the precipitation hyetograph tabulated below, carry out a complete infiltration analysis, including evaluation of the temporal evolution of the actual infiltration rate, actual cumulative infiltration...
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