# GATE Questions & Answers of Flood estimation and routing

## What is the Weightage of Flood estimation and routing in GATE Exam?

Total 5 Questions have been asked from Flood estimation and routing topic of Hydrology subject in previous GATE papers. Average marks 1.00.

For routing of flood in a given channel using the Muskingum method, two of the routing coefficients are estimated as $\style{font-family:'Times New Roman'}{C_0=-0.25\;and\;C_1=0.55}$. The value of the third coefficient $C_2$ would be ______

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A culvert is designed for a flood frequency of 100 years and a useful life of 20 years. The risk involved in the design of the culvert (in percentage, up to two decimal places) is ______

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The type of flood routing (Group I) and the equation (s) used for the purpose (Group II) are given below.

 Group I Group II P   Hydrologic flood routing 1.  Continuity equation Q   Hydraulic flood routing 2.  Momentum equation 3.  Energy equation

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A 1-h rainfall of 10 cm magnitude at a station has a return period of 50 years. The probability that a 1-h rainfall of magnitude 10 cm or more will occur in each oftwo successive years is:

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A flood wave with a known inflow hydrograph is routed through a large reservoir. The outflow hydrograph will have