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Hydraulic Design of Culverts and Detention Basins in Drainage Engineering

Culvert and detention basin design in drainage/hydraulic engineering applies open-channel and pipe-flow hydraulics to size conveyance and storage structures for design storm discharges: culvert sizing balances gravity-driven open-channel flow against pressure-driven full-pipe flow depending on inlet/outlet submergence, while detention basin design balances inflow and outflow hydrographs to determine required storage volume. The domain sits within hydrology and hydraulic engineering, applying flood-frequency analysis, energy/head-loss equations, and hydrograph routing as its governing formal tools.