A watershed of 37 km2 was subjected to a storm of 2-h duration from which the following information are recorded in Table Q3. a) Obtain a Unit Hydrograph for this watershed knowing that the base flow in the stream is estimated at 2 m3 /s. [10] b) Derive and plot 6-h Unit Hydrograph for the catchment area.           Time (hours) 0 1 2 3 4 5 6 7 8    Discharge (m3 /s)      2 15 30 37 30 22 16 12 2

Q: An engineer is responsible for designing a culvert at the point of solution of the watershed below.…

A: Intensity, i=2 in/hrrunoff coefficient, Cj = 0.01 *AAreas in acres, conversion factor, K=

Q: 4. Given the following 2-hour unit hydrograph, determine the peak direct runoff rate (in cfs)…

A:

Q: Probability plot A bridge will be built over the Meherrin River near the site that the discharge…

A: Given, Service life of bridge = 40 years. Design flood = 23000 cfs

Q: Answer question 1

A: Given data in question  Volume 125.6 m3 Base area 500 m2 To find out  Storage depth

Q: 3. A recreational park is built near Buffalo Creek. The stream channel can carry 200 m³/s, which is…

A: Recreational park- peak flow =5 year flow of stream channel =200 m3/s

Q: For the given rainfall data, compute the runoff volume if the index is 0.9 in/hr. The watershed area…

A: φ  index = 0.9 in/hrWatershed area = 0.785 mi²  T(hr)          rainfall intensity (in/hr) 0- 3…

Q: 4. Given the inlet below, with h=0.5 ft, W=1.5 ft, L=4.0 ft, and a gutter depression depth=0.33 ft,…

A: The value of "h" = 0.5 ft The value of "W" = 1.5 ft The value of "L" = 4 ft The gutter depression…

Q: Truckee River is 55.3 acre-ft. At that instant, the inflow into the reach is 375 cfs and the outflow…

A:

Q: The 1-hour unit (25mm) hydrograph for an ungauged watershed is estimated by a watershed modeler to…

A: assume BASE FLOW=0 excess rainfall=25 mm=2.5 cm

Q: The following data was collected during a 5-hour storm. If the base flow for the stream is 35 m?/s,…

A: Given: Base flow = 35 m3/s   Also, Let area of basin = 2 km2

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: Visualize that two tributaries A and B at their confluence form a river C. Statistical properties of…

A:

Q: Please explain how to calculate a/A for the (delta e)/(delta E) values when you get to that part in…

A: Given that:For the following hypothetical watersheds, compute  the hypsometric  curve an compute…

Q: DA River in the Thunder Bay area experienced peak floods of 2600 ft/s and 3000 ft³/s respectively…

A: Peak floods (a) = 2600 ft3/sec Return period (a) = 15 years Peak floods (b) = 3000 ft3/sec Return…

Q: A 1 : 100 scale model of river is to be tested in a laboratory. The highest flood in river is 1000…

A: The given data for the river model testing is:Highest flood in the actual river = 1000 m³/sScale of…

Q: Consider a watershed with a drainage area of 10 square miles and a mainstream length of 7.5 miles.…

A:

Q: A 6-hour Unit Hydrograph (UH) of a catchment is triangular in shape with a total time base of 36…

A:

Q: The stream flow data for a basin with an area of 3500 km2 are given in the table 1, a. Separate the…

A: Area, A=3500 basin area NO. Accumulative time Total flow m3/s 1  8.00 Pm 16 2  9.00 Pm 15 3…

Unit Hydrograph

Hydrology is the science which deals with the study of water on the earth’s surface. The word Hydrograph is derived from the word hydro which means water. Hydrograph is basically a graph in which the discharge is plotted against the time interval at a specific point in a river or other channel. In a hydrograph, the discharge is plotted along the y-axis and time interval is plotted along the x-axis. Hydrograph is used to estimate the runoff. The variations in discharges with the change in time is shown by a hydrograph. It was revealed that the total discharge at an outlet increases with time by a kinematic wave model.