Civil Engineering (CE) Exam > Civil Engineering (CE) Videos > Engineering Hydrology > Unit Hydrograph
Unit Hydrograph Video Lecture | Engineering Hydrology - Civil Engineering (CE)
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FAQs on Unit Hydrograph Video Lecture - Engineering Hydrology - Civil Engineering (CE)
| 1. What is a unit hydrograph in civil engineering? |  |
Ans. A unit hydrograph is a graphical representation of the runoff response of a watershed to a unit amount of rainfall over a specific period of time. It helps in predicting the flow rate of a river or stream during a storm event.
| 2. How is a unit hydrograph developed in civil engineering? | |
Ans. A unit hydrograph is developed by analyzing the historical rainfall and streamflow data for a specific watershed. The rainfall data is convolved with the unit hydrograph response function to obtain the resulting streamflow. This process is repeated for different storm events to develop a unit hydrograph for the watershed.
| 3. What are the applications of unit hydrographs in civil engineering? | |
Ans. Unit hydrographs are widely used in civil engineering for various applications, including flood forecasting, reservoir design, stormwater management, and river flow estimation. They provide valuable information about the timing and magnitude of peak flows during storm events.
| 4. How can unit hydrographs be used to estimate the design flood in civil engineering projects? | |
Ans. Unit hydrographs can be used to estimate the design flood by convolving the design rainfall intensity with the unit hydrograph. The resulting hydrograph represents the expected flow rate during the design storm event. By analyzing the peak flow and volume of this hydrograph, engineers can design structures and infrastructure to safely handle the expected flood conditions.
| 5. What are the limitations of unit hydrographs in civil engineering? | |
Ans. Unit hydrographs have certain limitations, such as assuming linearity in the rainfall-runoff relationship, neglecting the effects of antecedent soil moisture conditions, and not considering the spatial variability of rainfall within a watershed. These limitations can lead to errors in flood predictions and may require additional adjustments or modifications to the unit hydrograph method.
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Nov 24, 2024 Last updated |
Video Description: Unit Hydrograph for Civil Engineering (CE) 2024 is part of Engineering Hydrology preparation.
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