List of top Water Resources Engineering Questions on Flood estimation and routing asked in GATE CE

The probability (in %) that a storm having return period of 15 years may occur in the next 10 years is ______ (rounded off to two decimal places).

Types of flood routing and methods are given in the table below.

Column 1: Type of Flood Routing	Column 2: Method
(P) Hydrologic routing	(i) Muskingum method
(Q) Hydraulic routing	(ii) Modified Pul's method
(R) Reservoir routing	(iii) Method of Characteristics
(S) Channel routing

Option(s) giving the CORRECT match(es) between Column 1 and Column 2 is/are:

A bridge with an expected life of 50 years is designed for a flood of 10000 m\(^3\)/s corresponding to the return period of 100 years. The risk associated with this design is (rounded off to two decimal places).

The mean rainfall over a catchment has to be estimated. The data for four rain gauges located in and around the catchment is listed in the table. Which one of the following statements is correct:

A flood control structure having an expected life of n years is designed by considering a flood of return period T years. When T = n, and n \to \infty, the structure’s hydrologic risk of failure in percentage is} _________ %. (round off to one decimal place)