Properly estimating the site specific parameters such as subsurface hydraulic conductivity can be limited on many development Sites. This presentation addresses the challenges and innovations in developing realistic dewatering designs for construction projects, with a focus on enhancing subsurface characterization. It highlights the importance of accurate groundwater assessments in optimizing project outcomes, reducing costs, and mitigating risks associated with complex site conditions.

This presentation details the design and implementation of robust dewatering system designs using high-resolution site characterization tools such as the Hydraulic Profiling Tool (HPT). Conventional methods for estimating hydraulic conductivity (K) such as; grain size analysis, slug tests, and pumping tests, are critically evaluated for their limitations in heterogeneous subsurface environments. The HPT is presented as an advanced alternative, capable of generating continuous, real-time profiles of formation permeability and electrical conductivity at centimeter-scale resolution. Through a comparative case study, HPT-derived K values are benchmarked against traditional/regulator accepted methods. The HPT can provide improved accuracy and spatial coverage over the Site to help develop a more robust picture of the changing Site conditions. The integration of HPT data into dewatering assessments enables more precise calculation of groundwater flow rates (Q), supports adaptive field investigations, and informs cost-effective design decisions for complex construction projects.