Q4-The stream flows due to three successive storms of 2.9, 4.9 and 3.9 cm of 6 hours duration each on a basin are given below. The area of the basin is 118.8 km². Derive a 6-hour unit hydrograph for the basin. An average storm loss of 0.15 cm/hr can be assumed. 0 Time (hr) Flow (cumec) 20 3 50 6 92 140 12 199 16 202 18 204 21 144 24 84.5 27 45.5 30 29 33 20

Q: For a catchment isohyets are drawn and area is calculated using planimeter as shown in figure. The…

A: as per given isohyets for a catchment area,To the  average precipitation over the catchment area

Q: Route the inflow hydrograph given below

A: Taken 520x105 m3 Storage,S(m3) Outflow,O(m3/s) 2S/dt 2S/dt+O 52000000 20 14444.44 14464.44…

Q: Analysis of this river revealed adischarge-stage correlation of Q = 12.43h2.658, where Q = discharge…

A: We have the stage (h) measurements for different times during the storm event.We are given the…

Q: The following hydrological information : N for proposed site for hydropowe in Athi River Bauin Table…

A: Use ripple diagram or cumulative mass curve to determine the active storage for the dam if Only 2/3…

Q: Q1/Separate the given hydrograph in to its components using method four, if the catchment area is…

A: Time(day)Direct runoff Discharge (m3/s112228318041900522006120072308100910010601120121513121410

Q: Direction: A four hour unit hydrograph of a catchment is traingular in shape with base of 80 hours.…

A: 4 hour Unit Hydrograph triangular in shape Base=80 hours Area=720 km2 Base flow=30 m3/s Phi-index=1…

Q: A 2-hour unit hydrograph can be approximated as trapezoidal as shown in figure. The unit hydrograph…

A: To Find :Catchment area ?

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

A:

Q: ve Equal Marks. Q1: Given below are the flows from a storm of 1hr duration on a stream with a…

A:

Q: What is the negative deviation value in this diagram 600 550- *Observed inflow adjusted for…

A: Given data- Mass-inflow variation with year is given in the form graph as shown-

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.