Question J. (2010 ) A 2-hour unit hydrograph for a drainage area is given below. a)...
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...
Use the 1-h Unit Hydrograph tabulated below to (a) Predict the total streamflow hydrograph that would be observed as a result of a storm whose effective rainfall is also tabulated below. Assume a constant baseflow of 150 m/s. Time 1-H Unit Hydrograph (m/s) 0.00 40.00 130.00 210.00 150.00 120.00 80.00 40.00 15.00 0.00 Time (h) Effective Precipitation (ERH) (cm/h) 1.0 2.0 0-3 3-6 6-9 b) Route the following hydrograph through a river reach for which K = 12.0 h and...
The one-hr unit hydrograph is given in the table. Determine the 2-hr unit hydrograph. Use the given table. The last column of your data count as your final answer 1-hr time UH (hr) (cfs) 0.5 1.5 2.5 3.5
Predict the streamflow hydrograph for the North Branch Ralston Creek (A year 7-hour design storm 3.01 mi') for the 10- SCS 10-year 7-hour Design Storm for North Branch Ralston Creek Watershed Time 11n l ime in 0.0 0.14 0.14 0.20 0.30 0.34 0.60 0.90 1.60 0.80 0.40 0.20 0.14 0.12 0.12 0.5 4.0 5.0 2.5 6.0 6.5 3.5 Assume the following basin characteristics -index is 0.50 in/hr for the storm Time of concentration: 56 minutes Use the SCS dimensionless unit...
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.
2. Refer to the rainfall and streamflow data tabulated below for the area of 280 [km]. Time Observed Gross hPrecipitation (GRH) [cm/h] 0.25 3.00 2.75 Time (h) Hydrograph 160 150 350 800 025 1200 4 900 700 550 350 250 160 140 10 (a) Obtain an Unit Hydrograph (UH) of these series. In this process, use the horizontal straight-line method to separate baseflow. [10pt] (b) Can you also transfer the UH obtained from (a) to the 6-hour UH for this...
QUESTION 6 The ordinates of a 3-hour unit hydrograph for a particular basin are given be-low. Determine the ordinates of the S-curve hydrograph and therefrom the ordinates of the 6-hour unit hydrograph. Time (hr) 3- hr UH m3/s 0 0 3 1.5 6 4.5 9 8.6 12 12.0 15 9.4 18 4.6 21 2.3 24 0.8 27 0
A water resources problem. Please answer with clear steps.
The 2-hr unit hydrograph is given in the table. Determine the 4-hr unit hydrograph. Use the given table. The last column of your data count as your final answer 2-hr time UH (hr) (cfs) 10 13 14
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.
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...