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Water Portal / Rainwater Harvesting / Surface water / Sump intake

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[[Image:intake icon.png|right|80px]]

Sites on the inside of bends should be avoided, to reduce sediment deposition and inflow.

Problems can arise if the river bed is unstable (for example, gravel), or the river is very shallow at low flows. It can be difficult to set the intake level to be safe from silting up during floods, but still able to abstract water at low flows. A [[Water Portal / Rainwater Harvesting / Surface water / Tyrolean weir | Tyrolean weir]] can assist with this or a [[Water Portal / Rainwater Harvesting / Surface water / Floating intake | Floating intake]] can be used.

===Resilience to changes in the environment===

===Acknowledgements===

* Brikke, François, and Bredero, Maarten. [http://www.washdoc.info/docsearch/title/117705 Linking technology choice with operation and maintenance in the context of community water supply and sanitation: A reference document for planners and project staff] or ([http://www.who.int/water_sanitation_health/hygiene/om/wsh9241562153/en/ alternative link]). World Health Organization and IRC Water and Sanitation Centre. Geneva, Switzerland 2003.

* [http://www.bvsde.paho.org/eswww/tecapropiada/otratec/waterlin/tb22.pdf Waterlines: Technical Brief 22] or ([http://www.washdoc.info/docsearch/title/116333 alternative link]).

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