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→Performance
[[check dams]]
[[check dams]]
===Performance===
==Performance==
==Performance==
{|class="wikitable"
|+Ability of Swales to Meet Stormwater Management Objectives
|-
!BMP
!Water Balance
!Water Quality
!Erosion Control
|-
|'''Swale with no underdrain'''
|Partial-based on available storage volume and native soil infiltration rate
|Yes-size for water quality storage requirement and maximum flow rate 0.5 m/s
|Partial-based on available storage volume and native soil infiltration rate
|-
|'''Swale with underdrain or partial infiltration'''
|Partial-based on available storage volume beneath the underdrain and soil infiltration rate
|Yes-size for water quality storage requirement
|Partial-based on available storage, native soil infiltration rate and if a flow restrictor is used
|-
|'''Swale with underdrain and impermeable liner or no infiltration'''
|Partial-some volume reduction through evapo-transpiration
|Yes-size for water quality storage requirement
|Partial-based on available storage volume and if a flow restrictor is used
|}
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