Dewatering is a process to remove or drain groundwater or surface water from a construction site, caisson, mine shaft or riverbed. Wellpoint dewatering is the process of sinking wellpoints into the ground from which water is drawn up by a vacuum generated by a dewatering pump. Wellpoints are tubes with slots at the bottom, in which the water enters. Typically the wellpoints are inserted in a line or around the edge of an excavation.

 

Wellpoint Dewatering System Example

 

This Earth Dam dewatering project in Western Canada is a prime example of how effective vacuum wellpoint dewatering systems can be. The following dewatering stages show the work site from its original all but catastrophic bank and base failure, to a dry and workable site. This enabled the bulk excavation of material to proceed and was followed by the placement of the imported compacted impermiable material to form the earth dam. Excel Dewatering crews were retained to remediate these failed conditions to get this project back on schedule successfully and satisfactory to all involved.

Prior To Set Up And Dewatering
 

Wellpoint Dewatering System Set Up Completed
 

Dewatering Transformation
 

Dewatering Results