What is the purpose of a hydrograph in hydrology?

Which method of structural analysis is particularly suitable for analysing tall and slender structures subjected to lateral loads, such as skyscrapers?

What is the purpose of a detention basin in stormwater management?

Which equation governs the flow of water through a porous medium, considering both Darcy's law and the continuity equation?

In the design of reinforced concrete beams, what is the purpose of providing shear reinforcement such as stirrups or links?