The best unit duration of storm for a unit hydrograph is

Related MCQs

• Instantaneous unit hydrograph is a hydrograph of i) unit duration ii) unit rainfall excess iii) infinitely small duration iv) infinitely small rainfall excess The correct answer is
• The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by
• The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of
• The maximum average depth due to one day storm over an area of 100 km2 is 100 mm. Depth-Area-Duration (DAD) curves indicate that for the same area of 100 km2 the maximum average depth for a 3 hour storm will be
• S-hydrograph is used to obtain unit hydrograph of
• The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be
• A hydrograph representing one cm of run off from a rainfall of some unit duration and specific area distribution is known as
• The normal annual precipitation at stations X, A, B and C are 700 mm, 1000 mm, 900 mm and 800 mm respectively. If the storm precipitation at three station A, B and C were 100 mm, 90 mm and 80 mm respectively, then the storm precipitation for station X will be
• The graphical representation of average rainfall and rainfall excess (i.e. rainfall minus infiltration) rates over specified areas during successive unit time intervals during a storm is known as
• Hydrograph is the graphical representation of