Direction: A four hour unit hydrograph of a catchment is traingular in shape with base of 80 hours. The area of the catchment is 720 km². The base flow and f-index are 30 m³/s and 1 mm/h, respectively. A storm of a 4 cm occurs uniformly in 4 hours over the catchment. 6. The peak flood discharge due to the storm is

Q: 1. (a)The measured streamflow data for a 2hr storm over a catchment of area 1.98km2 is shown in…

A: Area = 1.98 Km2

Q: Estimate the lag time (hr) for the following watershed: Hydraulic length (miles ) = 1.12 %3D Curve…

A: Given:- The hydraulic length of watershed = 1.12 miles Curve number for watershed = 80  The average…

Q: 3.consider 2 pipes and 2 inlets in fig below.Calculate peak flow handled by this system Assume, Tc…

A:

Q: Direction: One hour triangular unit hydrograph of a watershed has the peak discharge of 60 m³/sec.cm…

A: Peak discharge = 60 m3/sec.cm Duration = 10 hrs. Time base 30 hrs. f index = 0.4 cm per hrs. Base…

Q: A watershed channel is 20,000 m long with an E.L change of 20 m and an area of 200 km squared. Run…

A: solution given intensity i=25 mmhrwatershed area A=200km2=200×106 m2duration of rainfall =12hrs so…

Q: A 12-hour unit hydrograph (of 1 cm excess rainfall) of a catchment is of a triangular shape with a…

A:

Q: Q3: A river catchment has a 2.0 hour unit hydrograph with the ordinates 0,3,11,35,55,66,63,40,22,9…

A:

Q: WATER RESOURCES ENGINEERING: The following data was collected during a 5-hour storm event in the…

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

Q: Given below are ordinates of hydrograph, separate the base flow from direct runoff flow by using the…

A:

Q: a drainage basin with the following characteristics: Drainage Area is 125 acres Short grassy…

A: Applying snyder Mathode and using appropriate values of constand

Q: Determine the unit hydrograph for a basin area of 412.2 km2 using the rainfall and streamflow data…

A: Using constant slope method seperate base flow from the hydrograph :Baseflow =160m3sDirect runoff…

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.