Hydro GeoAnalyst Module Guide

There are four editions of Hydro GeoAnalyst that are available with the following modules and features:

Data Management Modules and Features
Module/FeatureHGA (Standard)HGA+Description
Template ManagerFully customize your environmental database to your specific project needs with options to add unlimited tables and fields.
Data ImportEasily import and validate data from Excel, Access, EDDs, Mobile EDDs, Diver MON files, or LAS files. Also includes the option to bulk load images.
Data ViewersImageEdit, manage, tabulate, search, and filter your project data using integrated data viewers and lists specifically designed to work with your data based on your project-specific needs.
Query Builder/ViewerEasily create, save, and recall data queries to extract useful information about your project. Only minimal SQL syntax knowledge is required!
Lab QA/QCVerify the accuracy of laboratory results through the analysis of blank, duplicate,   matrix spike samples, dilution factors, detection limits, and holding times.
List EditorCreate lists of valid values for almost any field in your database (e.g. Station Type, Geologic Unit, etc.) for consistent and reliable data entry.
Material Specification EditorCreate, edit, and manage material specifications and patterns for use in your project well profiles, cross sections, and 3D scenes.
Analysis/Interpretation Modules and Features
Module/FeatureHGA (Standard)HGA+Description
Well ProfileDisplays detailed well/station information stored as depths or intervals and includes support for deviated (non-vertical) wells by automatically calculating true vertical depth.
Plot CollectionsCreate and organize plots based on dynamic queries of your data. Choose from 5 types of statistical plots and 5 general plots.
Map ViewerCreate detailed maps based on a live connection to your data. Visualize stations, add detailed plots, and interpolate contours of the water table elevation, potentiometric heads, or of concentrations of constituents of concern.
Map ManagerCreate detailed maps of your site, visualize stations, contours of water table or contaminant hot spots, and define cross-section lines.
Cross-Section EditorProduce detailed cross-section diagrams showing geologic, hydrogeologic, and model layers as well as screen and water level data.
Scene ViewerDisplays and interpolates your project data in 3D quicker and easier than ever before and supports visualization of fence diagrams, plumes, deviated (non-vertical) wells, and more.
3D InterpolationInterpolate data in three dimensions, plus time to estimate the volumetric and temporal distribution of groundwater or soil constituents.
Link to AquiferTestEasily send your pumping test data to be analyzed, interpreted, and visualized in AquiferTest.
Collaboration Modules and Features
Module/FeatureHGA (Standard)HGA+Description
User ManagementManage and control the different levels of user access for each member of your extended team.
Event PlannerEasily plan future sampling events and other field activities, schedule recurring sampling rounds, and set automatic reminders to ensure a sampling round is never missed.
Online SharePublish project data to the web for communicating and presenting data to colleagues and stakeholders.
Mobile EDDImageQuickly build reusable data collection forms that streamline the data collection process for field staff improving the integrity and quality of your data.
Quick CheckerImageA stand-alone utility that can be shared with project stakeholders to streamline importing data from external sources by validating it against your data integrity rules.
Print-To-Office ReportingQuickly prepare client-ready reports, figures, and graphics from data views, plot collections, well profiles, map views, and 3D scenes using Microsoft Office template documents.
Report EditorCreate professional custom reports containing data, 2D and 3D views you have generated for your projects. (NOTE: this is a legacy module that is only available in existing projects and will be retired in a future version of HGA)
Hydro GeoAnalyst Plus (HGA+) Modules and Features
Module/FeatureHGA (Standard)HGA+Description
Sample ListManage and view samples and related results. Leverage the power of the Query Builder to define lists of samples for use throughout the application
Parameter EditorImageDefine how parameters are used across your projects. Ensuring consistency from collection through analysis and allowing you to dynamically switch measurement units (e.g. ug/L to meq/L).
Water Quality StandardsImageImport, manage and update any number of Water Quality Standards to compare against sample data. Easily find and manage exceedances.
FunctionsImageOver 50 functions and converters that allow you to perform quick, on-the-fly analyses on your water quality data, including dynamic unit conversion, ionic functions, corrosion and scaling indices, isotope calculations, and more.
Sample ReportsImageBuild customized analytical data reports for any dynamic sample sets including statistics and comparisons to one or more active standards.
R-ConsoleAllows you to run scripts in the R scripting language and leverage the thousands of available libraries that facilitate data analyses, visualization, categorization, and much more.
(Extended) Plot CollectionsCreate interactive plots based on dynamic data sets. Support for 9 geochemical-specific plots in addition to what is available in HGA’s standard plot module.
(Extended) Map ViewerCreate maps based on a live connection to your data. Includes support for all plot types and interactive selection of sample data.

Bit Level (32-bit vs 64-bit) Editions

As of Version 11.0, Hydro GeoAnalyst is available as either a 32-bit application or as a 64-bit application, both of which are included with your purchase of HGA or HGA+:


Memory and Performance

The bit-level installations have the following memory and performance attributes:

  • The 32-bit editions are limited by Windows Operating Systems to a hard limit of approximately 2GB of active RAM; exceeding this limit may cause errors and/or force the application to close.
  • The 64-bit editions do not have a memory limitation and have increased performance



The bit-level installations have the modules included/excluded, as described above. The modules which are only available in 32-bit editions of HGA are “legacy” modules, which are based on 32-bit technology. Updated or replacement versions of the legacy modules are under development and will be available in a future release.  In some cases, a near equivalent module is already available. For example, the Map Viewer is a near equivalent to the Map Manager, similarly, the Print-to-Office functionality effectively replaces the Report Editor module.



Installation of the 32-bit and 64-bit application is mutually exclusive on the same machine; that is, you may only install one Edition/Version of HGA on the same machine. However, you can connect to an HGA project of the same version using either bit level. This means that depending on your needs, members of your HGA team can have the benefits of using the 64-bit version if the legacy modules are not needed; while others can still access these features.