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Construction for Landscape Architecture by Jamie Liversedge, Robert Holden

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Groundwater

Groundwater is the water that lies below the soil surface, including water between soil particles and the water table, where the soil is totally saturated. The level of the groundwater may well vary with the seasons, and so the water table may rise and fall. The soil above the water table will not be dry, but it will not be saturated.

The groundwater may be affected by the laying of new drains and foundations, and this can adversely affect trees and other vegetation which is to be retained. It can also be necessary to drain groundwater locally if works entail cutting into the ground in order to divert the flow away from a new structure. For instance, a parking lot cut into a slope may require a French drain or a ditch laid along the ...

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