RESULTED from 1 cm of rainfall excess depthWe know that∴ \(rainfall\;excess = \frac{{Volume\;of\;DIRECT\;runoff}}{{Catchment\;area}}\)The area under triangle = Volume of direct runoff\(\frac{1}{2} × {q_p} × Base\;period = Area\;of\;catchment × 1\;cm\;runoff\;\;\)Where qp is peak discharge of unit hydrographGiven,Base period = 20 hours, Area of catchment = 500 HA = 50 × 104 m2\(\frac{1}{2} × {q_p} × Base\;period = Area\;of\;catchment × 1\;cm\;runoff\;\;\)\(\frac{1}{2} × {q_p} × 20 = 50 \times 10^4m^2 × 1\;cm\;runoff\;\;\)qp = 5000 m3/hr∴ Peak Discharge = 5000 m3/hr

"> RESULTED from 1 cm of rainfall excess depthWe know that∴ \(rainfall\;excess = \frac{{Volume\;of\;DIRECT\;runoff}}{{Catchment\;area}}\)The area under triangle = Volume of direct runoff\(\frac{1}{2} × {q_p} × Base\;period = Area\;of\;catchment × 1\;cm\;runoff\;\;\)Where qp is peak discharge of unit hydrographGiven,Base period = 20 hours, Area of catchment = 500 HA = 50 × 104 m2\(\frac{1}{2} × {q_p} × Base\;period = Area\;of\;catchment × 1\;cm\;runoff\;\;\)\(\frac{1}{2} × {q_p} × 20 = 50 \times 10^4m^2 × 1\;cm\;runoff\;\;\)qp = 5000 m3/hr∴ Peak Discharge = 5000 m3/hr

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A unit hydrograph for a watershed is triangular in share with a base period of 20 hours. The area of the watershed is 500 ha What is the peak discharge in m3 /hr?

Energy Engineering Hydrograph in Energy Engineering . 7 months ago

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ExplanationUnit hydrograph (UH) is a hydrograph that RESULTED from 1 cm of rainfall excess depthWe know that∴ \(rainfall\;excess = \frac{{Volume\;of\;DIRECT\;runoff}}{{Catchment\;area}}\)The area under triangle = Volume of direct runoff\(\frac{1}{2} × {q_p} × Base\;period = Area\;of\;catchment × 1\;cm\;runoff\;\;\)Where qp is peak discharge of unit hydrographGiven,Base period = 20 hours, Area of catchment = 500 HA = 50 × 104 m2\(\frac{1}{2} × {q_p} × Base\;period = Area\;of\;catchment × 1\;cm\;runoff\;\;\)\(\frac{1}{2} × {q_p} × 20 = 50 \times 10^4m^2 × 1\;cm\;runoff\;\;\)qp = 5000 m3/hr∴ Peak Discharge = 5000 m3/hr

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Posted on 23 Nov 2024, this text provides information on Energy Engineering related to Hydrograph in Energy Engineering. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

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