Weirs, spillways and gates control and measure water.
Weirs measure and control levels; spillways pass floods safely (ogee, chute, siphon); gates regulate flow; energy dissipators protect downstream. Design uses discharge equations such as Q=C L H^{3/2} for a weir. Fish passages and sediment management are considered.
An ogee spillway passes the probable maximum flood over a dam.
Hydraulic structures control and measure flow in rivers and reservoirs, so they protect areas from floods and supply water for use.
Weirs, spillways and gates control and measure water.
Hydraulic structures control and measure flow in rivers and reservoirs, so they protect areas from floods and supply water for use.
Raising the water level and measuring flow, because the depth over the crest gives the discharge.
A structure that safely passes excess water from a reservoir, so the dam is not overtopped during a flood.
Typical applications include designing a weir to measure flow in a river, sizing a spillway to pass the flood safely past a dam and designing a gate to control flow into an irrigation canal.
Study "Environmental impact assessment" first (topic 86 of 112 in Civil & Structural). It covers the groundwork this topic builds on.
Crest shape. Radial and sluice gates. Stilling basins.
An ogee spillway passes the probable maximum flood over a dam.
The next topic is "Groundwater and wells", which builds directly on this one.
It is classed as Advanced in Civil & Structural (topic 87 of 112). It is an advanced topic. It assumes you are comfortable with the intermediate topics in Civil & Structural.
Want to practise? Open the interactive course for quick checks, quizzes, simulations and progress tracking.