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2. A watershed is approximately 43 sq.miles. Time for each area to outlet is given in Table 1. In...
3. The stream flow given in the following table was produced by a 1-cm rainfall event...
3. The stream flow given in the following table was produced by a 1-cm rainfall event (total depth). The effective portion of the rainfall lasted 1 hr (from time 9 to time 10). If the watershed is 20 square kilometers, derive a 1-hr unit hydrograph for the watershed. Assume the groundwater contribution is linear from 1.4 m/sec (at time 9) to 3.0 m/sec (at time 17). Time (hrs) Q (m/sec ) 8 1.6 9 1.4 10 4.6 11 9.7 12...
A 1 hour unit hydrograph for a watershed with area A acres is approximated as a...
A 1 hour unit hydrograph for a watershed with area A acres is approximated as a triangle with base of 20 hr and a peak flow of 300 cfs. Time to peak is 10 hrs. Calculate the watershed area in acres.
The 4-hr unit hydrograph for a watershed is given as below. Time (hr) 2 4 6...
The 4-hr unit hydrograph for a watershed is given as below. Time (hr) 2 4 6 8 10 12 14 Unit hydrograph (m3/s/10 mm) A design storm has 1.5 cm/hr in first 2 hr and 1.0 cm/hr in the second 2 hr. The abstraction rate is 0.5 cm/hr. Base flow is 10 m/s. Calculate the total runofi hydrograph.
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)...
Hydrologic analysis of a watershed Problem2: The unit hydrograph is the direct runoff generated by 1 unit (I mm in this...
Hydrologic analysis of a watershed Problem2: The unit hydrograph is the direct runoff generated by 1 unit (I mm in this problem) of excess rainfall. The one-hour unit hydrograph of a watershed is given by: 4 Time (hour) -0.9 U0.4 U0.2 0.0 0.0 U-0.6 Unit hydrograph (m/s/mm) (a) The 100-year storm over the watershed has the following excess rainfall pulses: Fromt 0 to 1 hour, P45 mm From t I to 2 hours, P20 From t = 2 to 3...
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...
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...
Question 5 (20 points) Calculate and draw approximately the hydrograph resulting from the given hypothetical basin...
Question 5 (20 points) Calculate and draw approximately the hydrograph resulting from the given hypothetical basin in the presence of the given total hyetograph. Note that the basin is impervious and evaporation is negligible. Runoff of each area arrives to the next in 1 hour. 2 km2 i(cm/hr) 3 km2 2 km2 1 km2 1 2 3 (hr) 4
The area is 20 km^2 A hydrograph for was obtained for this representative catchment and is...
The area is 20 km^2
A hydrograph for was obtained for this representative catchment and is given below. 1.Calculate the precipitation excess that would be needed to obtain this hydrograph from the unit hydrograph method. The resulting precipitation excess corresponds to a 30-min time duration. Show the unit hydrograph in table format. (2) 2.Determine the runoff hydrograph for a 30min rainfall excess of 2cm. (2) 3.Estimate the runoff hydrograph for a 50min rainfall excess of 3cm. (4) Time (hr) Runoff...
2. [10 points] Determine the 4-hr unit hydrograph using the following data for a watershed having...
2. [10 points] Determine the 4-hr unit hydrograph using the following data for a watershed having a drainage area of 200 km, assuming a constant rainfall abstraction rate of 1 cm per time period and a constant baseflow of 20 m3's. The ordinates of the unit hydrograph are in units of m s cm Four-hour period | 1 | 2-1 3 i 41 5 6 7 8 9 10| 11 Rainfall (cm) Streamflow (m s) 20 35 60 95 130...
3. The stream flow given in the following table was produced by a 1-cm rainfall event (total depth). The effective portion of the rainfall lasted 1 hr (from time 9 to time 10). If the watershed is 20 square kilometers, derive a 1-hr unit hydrograph for the watershed. Assume the groundwater contribution is linear from 1.4 m/sec (at time 9) to 3.0 m/sec (at time 17). Time (hrs) Q (m/sec ) 8 1.6 9 1.4 10 4.6 11 9.7 12...
The 4-hr unit hydrograph for a watershed is given as below. Time (hr) 2 4 6 8 10 12 14 Unit hydrograph (m3/s/10 mm) A design storm has 1.5 cm/hr in first 2 hr and 1.0 cm/hr in the second 2 hr. The abstraction rate is 0.5 cm/hr. Base flow is 10 m/s. Calculate the total runofi hydrograph.
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)...
Hydrologic analysis of a watershed Problem2: The unit hydrograph is the direct runoff generated by 1 unit (I mm in this problem) of excess rainfall. The one-hour unit hydrograph of a watershed is given by: 4 Time (hour) -0.9 U0.4 U0.2 0.0 0.0 U-0.6 Unit hydrograph (m/s/mm) (a) The 100-year storm over the watershed has the following excess rainfall pulses: Fromt 0 to 1 hour, P45 mm From t I to 2 hours, P20 From t = 2 to 3...
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...
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...
Question 5 (20 points) Calculate and draw approximately the hydrograph resulting from the given hypothetical basin in the presence of the given total hyetograph. Note that the basin is impervious and evaporation is negligible. Runoff of each area arrives to the next in 1 hour. 2 km2 i(cm/hr) 3 km2 2 km2 1 km2 1 2 3 (hr) 4
The area is 20 km^2
A hydrograph for was obtained for this representative catchment and is given below. 1.Calculate the precipitation excess that would be needed to obtain this hydrograph from the unit hydrograph method. The resulting precipitation excess corresponds to a 30-min time duration. Show the unit hydrograph in table format. (2) 2.Determine the runoff hydrograph for a 30min rainfall excess of 2cm. (2) 3.Estimate the runoff hydrograph for a 50min rainfall excess of 3cm. (4) Time (hr) Runoff...
2. [10 points] Determine the 4-hr unit hydrograph using the following data for a watershed having a drainage area of 200 km, assuming a constant rainfall abstraction rate of 1 cm per time period and a constant baseflow of 20 m3's. The ordinates of the unit hydrograph are in units of m s cm Four-hour period | 1 | 2-1 3 i 41 5 6 7 8 9 10| 11 Rainfall (cm) Streamflow (m s) 20 35 60 95 130...
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