Difference between revisions of "Check dams"

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Check dams are small dams or weirs constructed across a drainage ditch, swale, or channel to lower the speed of concentrated flows for a certain design range of storm events and to promote infiltration.  
 
Check dams are small dams or weirs constructed across a drainage ditch, swale, or channel to lower the speed of concentrated flows for a certain design range of storm events and to promote infiltration.  
  
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*may be constructed of any resilient and waterproof material, including: rock gabions, earth berms, coarse aggregate or rip-rap, concrete, metal or pre-treated timber. Rocks used in check dams should have median diameter 25-75 mm.  
 
*may be constructed of any resilient and waterproof material, including: rock gabions, earth berms, coarse aggregate or rip-rap, concrete, metal or pre-treated timber. Rocks used in check dams should have median diameter 25-75 mm.  
 
*are used, up to 0.6 m in height; the maximum design depth of ponded water must be ≤ 0.6 m.
 
*are used, up to 0.6 m in height; the maximum design depth of ponded water must be ≤ 0.6 m.

Revision as of 18:14, 27 September 2017

Check damsStructures constructed of a non-erosive material, such as suitably sized aggregate, wood, gabions, riprap, or concrete; used to slow runoff water. Can be employed in practices such as bioswales and enhanced grass swales. are small dams or weirs constructed across a drainage ditchA long narrow trench or furrow dug in the ground, as for irrigation, drainage, or a boundary line., swaleA shallow constructed channel, often grass-lined, which is used as an alternative to curb and channel, or as a pretreatment to other measures. Swales are generally characterized by a broad top width to depth ratio and gentle grades., or channel to lower the speed of concentrated flows for a certain design range of storm events and to promote infiltrationThe slow movement of water into or through a soil or drainage system.Penetration of water through the ground surface..

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Sizing

Check dams: Sizing