GATE Hydrology: Reservoir capacity, flood estimation and routing, surface runoff models – Previous Year Questions

7 GATE previous year questions on Reservoir capacity, flood estimation and routing, surface runoff models (Hydrology, Civil Engineering) with answers and explanations, from every paper.

GATE 2025 CE (CE2) Q26 (1 mark, Multiple select) – In the context of the effect of drainage density on the run-off generation and the hydrograph at the catchment outlet, all other factors remaining the…
GATE 2025 CE (CE1) Q20 (1 mark, Multiple choice) – To derive the total flood hydrograph at a catchment outlet from an isolated storm, the order in which the following methods are applied, from the…
GATE 2025 CE (CE1) Q34 (1 mark, Numerical answer) – A water resources project with an expected life of 25 years has to be designed for an acceptable risk of 5% against a design flood. The return period…
GATE 2026 CE (CE2) Q32 (1 mark, Numerical answer) – 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*).
GATE 2026 CE (CE2) Q43 (2 marks, Multiple select) – 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)…
GATE 2026 CE (CE1) Q55 (2 marks, Numerical answer) – A bridge with an expected life of 50 years is designed for a flood of 10000 m3/s corresponding to the return period of 100 years. The risk associated…
GATE 2026 CE (CE1) Q64 (2 marks, Numerical answer) – The intensity-duration relationship for a rainfall on a rectangular plot ABCD of area 7 ha (1 ha = 104 m2) can be modelled by the following equation:…