During a 3 h storm event, it was observed that all abstractions other than infiltration are negligible. The rainfall was idealized as three 1 h storms of intensities 10 mm/h, 20mm/h and 10 mm/h respectively and the infiltration was idealized as a Horton curve, f = 6.8 + 8.7 exp (-t) (f is in mm/

Q: a. Draw the hyetograph of this storm. b. Draw the standard infiltration curve (Using Horton's…

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Q: The rainfall figures for successive 30-minute intervals are 35, 40, 120, 85, 45, 45 and 30 mm/hr. If…

A: Given,Rainfall data for sucessive 30 intervals=35,40,120,85,45,45 and 30 mm/hrϕ index=35 mm/hrTo…

Q: Average runoff from a 600 km2 catchment area was measured as 60 m3/s for a 3-hr period .lf the…

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Q: 1. The evaporation losses from a reservoir with a surface area of 500 acres are 150 Ac-ft per day.…

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Q: Engineering hydrology - hydrograph analysis

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Q: river and the slaughterhouse wastewater is 28°C. Calculate the initial ultimate BOD after mixing.…

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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.