Changes

*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.  

*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]]}}

*should have energy dissipation and erosion control measures installed in the 1 - 2 m  downstream. Examples include large aggregate or [[Turf reinforcement|turf reinforcement]]}}