Oak Environmental Inc.

Hydrogeologic Software

Waterloo Hydrogeologic Groundwater & Environmental Software

Waterloo Hydrogeologic is a recognized leader in the development and application of innovative groundwater technologies.  Waterloo Hydrogeologic software consists of a complete suite of environmental software applications engineered for data management and analysis, modeling and simulation, visualization, and reporting.

For over 18 years our products and services have been used by firms, regulatory agencies, and educational institutions around the world.  We develop each product to mazimize productivity and minimize the complexities associated with groundwater and environmental projects.  For information on our software please click here: Waterloo Hydrogeologic


AquaChemAquaChem is designed for the management, analysis, and reporting of water quality data. AquaChem’s analysis capabilities cover a wide range of functions and calculations frequently used for analyzing, interpreting and comparing water quality data. AquaChem includes a comprehensive selection of commonly used plotting techniques to represent the chemical characteristics of aqueous geochemical and water quality data, as well includes PHREEQC - a powerful geochemical reaction model.

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AquiferTest Pro

AquiferTest ProDesigned for graphical analysis and reporting of pumping test and slug test data, offering the tools necessary to calculate an aquifer's hydraulic properties such as hydraulic conductivity, transmissivity, and storativity. AquiferTest Pro is versatile enough to consider confined aquifers, unconfined aquifers, leaky aquifers, and fractured rock aquifers conditions.  Analysis results are displayed in report format, or may be exported into graphical formats for use in presentations. AquiferTest Pro also provides the tools for trends corrections, and graphical contouring of water table drawdown around the pumping well. 

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Hydro GeoAnalyst

Hydro GeoAnalystHydroGeo Analyst is an information management system for managing groundwater and environmental data. HydroGeo Analyst combines numerous pre and post processing components into a single program.  Components include, Project Wizard, Universal Data Transfer System, Template Manager, Materials Specification Editor, Query Builder, QA/QC Reporter, Map Manager, Cross-Section Editor, HGA 3D-Explorer, Borehole Log Plotter, and Report Editor. The seamless integration of these tools provide the means for compiling and normalizing field data, analyzing and reporting subsurface data, mapping and assessing spatial information, and reporting site data.

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UnSat Suite Plus

UnSat Suite PlusUnSat Suite Plus seamlessly integrates multiple one-dimensional unsaturated zone flow and solute transport models into a single, intuitive working environment. Models include SESOIL, VS2DT, VLEACH, PESTAN, Visual HELP and the International Weather Generator.  The combination of models offers users the ability for simulating the downward vertical flow of water and the migration of dissolved contaminants through the vadose zone.  UnSat Suite Plus includes tools for project management, generating synthetic weather data, modeling flow and contaminants through the unsaturated zone, estimating groundwater recharge and contaminant loading rates, and preparing compliance reports.

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Visual HELP

Visual HELPVisual HELP is a one-dimensional, unsaturated zone flow modeling application built for optimizing the hydrologic design of municipal landfills.  Visual HELP is based on the US E.P.A . HELP model (Hydrologic Evaluation of Landfill Performance) and has been integrated into a 32-Bit Windows application.  It combines the International Weather Generator, Landfill Profile Designer, and Report Editor. Applications include designing landfill profiles, predicting leachate mounding, and evaluating potential leachate seepage to the groundwater.

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Visual MODFLOW PremiumVisual MODFLOW Premium is a three-dimensional groundwater flow and contaminant transport modeling application that integrates MODFLOW-2000/2005, SEAWAT-2000, MODPATH, MT3DMS, MT3D99, RT3D, VMOD 3D-Explorer, WinPEST, Stream Routing Package, Zone Budget, MGO, SAMG, and PHT3D.  Applications include well head capture zone delineation, pumping well optimization, aquifer storage and recovery, groundwater remediation design, natural attenuation simulation, and saltwater intrusion.

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