Artificial recharge – the return of water to the ground – can be used to minimize the following potential side effects of excessive groundwater lowering during construction:
- Consolidation of compressible soils that can result in damage to existing structures
- Deterioration of timber piles or other underground timber structures
- Loss in capacity of water supply wells
- Saltwater intrusion, movement of groundwater contamination, or migration of contaminant plumes
Recharge can be accomplished using modified deep wells, wellpoints, and recharge trenches.