Partial drainage

Partial drainage refers to the construction of drainage channels that are often intended to remove water from a wetland by gravity.

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• Wetland classification scheme
• Wetlands mapping data fields - Hydrological modifications (habitat scale)
• Wetlands mapping data fields - Hydrological modifications (landscape scale)
• Wetlands mapping attributes - Hydrological modifications (habitat scale)
• Wetlands mapping attributes - Hydrological modifications (landscape scale)
• Wetlands mapping classification table - Hydrological modifications

Partial drainage – Partial drainage

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• Partial drainage
• Partial drainage causing conversion to an intertidal wetland

Partial drainage of a palustrine or lacustrine wetland may decrease wetland extent and/or depth which may alter water persistence. In some cases, partial drainage of a lacustrine system may decrease wetland extent and depth to such a degree that the wetland is converted to a palustrine wetland system. Complete drainage results in the loss of a wetland.

Applicable Wetland Habitat Hydrological Modification:

• 'Modified – partial drainage – freshwater wetland with system change' (H2-M9-a)
• 'Modified – partial drainage – freshwater wetland with no system change' (H2-M9-b)

Last updated: 7 June 2023