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→Performance
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[[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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