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*Erosion protection such as river stone or riprap will be required to dissipate the energy from incoming concentrated flow.
*Erosion protection such as river stone or riprap will be required to dissipate the energy from incoming concentrated flow.
*The channel must be vegetated immediately after [[grading]]. Preferably, the swale should be planted in the spring so that the vegetation can become established with minimal irrigation.
*The channel must be vegetated immediately after [[grading]]. Preferably, the swale should be planted in the spring so that the vegetation can become established with minimal irrigation.
==Construction Considerations==
Properly installed enhanced swales should abide by the following recommendations:
* Grass swales should be clearly marked before site work begins to avoid disturbance during construction.
* No vehicular traffic, except that specifically used to construct the facility, should be allowed within the swale site.
* Any accumulation of sediment that does occur within the swale must be removed during the final stages of grading to achieve the design cross section, see above, under the [[Design]] section.
* Final grading and planting should not occur until the adjoining areas draining into the swale are stabilized. Flow should also not be diverted into the swale until the banks are stabilized.
* Preferably, the swale should be planted in the spring so that the vegetation can become established with minimal irrigation.
* Installation of erosion control matting or blanketing to stabilize soil during establishment of vegetation is highly recommended.
* If sod is used, it should be placed with staggered ends and secured by rolling the sod. This helps to prevent gullies
==Modeling==
==Modeling==