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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Partial drainage – Partial drainage causing conversion to an intertidal wetland

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

Partial drainage of a palustrine or lacustrine wetland often by constructing channels for drainage may inadvertently allow tidal inundation causing the wetland to convert to an intertidal wetland. Complete drainage results in the loss of a wetland.

Applicable Wetland Habitat Hydrological Modification:

• 'Modified – partial drainage – freshwater wetland with system change to intertidal' (H2-M9-c)

Last updated: 7 June 2023