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Check dams

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{{Textbox|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, for enhanced swales may be up to 0.6 m in height; the maximum design depth of ponded water must should be ≤ 0.6 m.
*designed for higher flow velocities should have spillways incorporated into their profile, to direct water to the centre of the swale.
*are usually installed between 10-20 m along the swale. The spacing of dams should not exceed the horizontal distance from the toe of the upstream dam to the same elevation on the downstream dam.
*should have energy dissipation and erosion control measures installed in the 1 - 2 m downstream. Examples include large aggregate or [[Turf reinforcement|turf reinforcement]]}}
{{:Check dams: Sizing}}

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