For excavations, foundations and maintenance near or below the water table, we examine groundwater conditions and the possible effects of lowering them on the work area and on nearby facilities.
What the study covers
- Groundwater conditions. Water levels, subsurface conditions and groundwater behaviour at the site.
- Water-table reduction studies. How far and how fast groundwater needs to be lowered for the works.
- Dewatering models. Modelling of the dewatering approach and its likely zone of influence.
- Monitoring requirements. Piezometers, monitoring wells and the readings needed during the works.
- Team coordination. Working with the design and construction team so the findings inform the method of work.
Linked investigations
Dewatering studies draw on our wider hydrogeological work: infiltration and permeability testing, groundwater-movement studies, groundwater mounding and wastewater-disposal interfaces, where relevant to the site.
Scope note: We assist with relevant water-permit processes within the engagement. Drilling, specialist engineering, and the installation and operation of dewatering systems are separate responsibilities unless specifically included and appropriately resourced.
