PAES 601:2016 General Irrigation Terminologies
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Questions and Answers

What is the active storage volume?

Volume of water stored in reservoir between the minimum water level and normal water level

Define afflux elevation.

Rise in maximum flood level from the original unobstructed flood level due to an obstruction like a dam

What is an algal bloom?

Overgrowths of algae in water producing dangerous toxins in fresh or marine water

Explain aquifer.

<p>Geologic formation containing water that can be economically developed for pumping</p> Signup and view all the answers

What is basin irrigation?

<p>Type of surface irrigation where water is applied to the basin and retained until it infiltrates or drains off</p> Signup and view all the answers

Define bearing capacity.

<p>Maximum average contact pressure between the foundation and the soil without causing shear failure</p> Signup and view all the answers

Explain border irrigation.

<p>Method using parallel border strips where water flows down the slope at a nearly uniform depth</p> Signup and view all the answers

What is conveyance efficiency?

<p>Ratio between water received at the inlet and released at the project’s headwork</p> Signup and view all the answers

Define critical depth.

<p>Depth of water flow with minimum energy content and no backwater forces</p> Signup and view all the answers

Explain cropping pattern.

<p>Sequence of different crops grown in regular order on a field or fields</p> Signup and view all the answers

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