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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.
{{TexboxTextbox|1=Check dams:
*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.

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