Water Simulation Packages (WSP)

ModTech enables you to model groundwater flow and contaminant transport within a real-world geographic environment. ModTech has plenty of math power under its hood and - to extend the automotive metaphor - the steering and gear-box are pure Win-32: flexible, intuitive, and comfortable to the touch. This seamlessly integrated modeling & GIS environment enables you to:

• Design the model grid graphically or analytically
• Assign properties and introduce boundary conditions using a variety of methods
• Transform geographical objects or entire maps to model grids
• Visualize input parameters in 2D or 3D
• Run groundwater flow and contaminant transport simulations using common or proprietary solvers
• Automatically receive data for model calibration
• Display and interpret the modeling results in 2D and 3D
• Transform the modeling results to geographic objects
• Exchange input and output data with common GIS, CAD, and graphic formats

For more information see GEOLINK web site.

AquiferTest Pro v.3.5 is the latest software technology for graphical analysis and reporting of pumping test and slug data. This powerful yet easy-to-use program has everything you need to quickly and easily calculate the hydraulic properties of your aquifer using a comprehensive selection of pumping test and slug test solution methods for:

• Confined aquifers
• Unconfined aquifers
• Leaky aquifers
• Fractured rock aquifers

AquiferTest Pro 3.5 now includes 6 powerful forward/predictive solution methods. Forward solutions, also known as predictive analyses, represent a new methodology for analyzing pumping test data. Instead of matching field data (observed draw-down data) to a given set of curves, forward solutions allow you to calculate water levels/drawdown at any given point, based on estimated transmissivity and storativity. This allows you to

• Optimize planning for future pumping well locations
• Develop more effective pumping rates and durations
• Understand the effects of well interference
• Improve the design of pumping tests

Source and more info: Waterloo Hydrogeologic, Inc

Managing Ground-Water Systems
May 22-24, 2006

The MODFLOW conference series has become a tradition for the presentation of cutting-edge practical application of ground water models in all aspects of hydrologic work. MODFLOW, the USGS modular three-dimensional finite-difference, ground-water flow model, has become an international standard for ground-water modeling. MODFLOW serves as a centerpiece for the recurring conference, but we anchor on MODFLOW only because of its widespread use and its status as a community model. The conference organizing committee needs and encourages participation by users of all types of models in all kinds of applications, including those for which MODFLOW is not suitable, so that the modeling capability of our profession will evolve. MODFLOW is a basis from which other models can be considered. The advantages and disadvantages of alternative codes can be reflected from MODFLOW with which nearly all modelers are familiar.

For more details click here.

From GAEA Technologies web site:

We are very pleased to announce that WinLoG Version 4 has been released. This upgrade has taken over two years to develop and represents the culmination of many of our users and internal ideas for enhancements.

The geographical information system feature added in version 4 displays a location map for the project showing the boreholes, cross-sections, and any surface features. This feature makes it easy to visualize your project and can be used to print a location map of the project. To edit a borehole all you need to do is click on it in the location map.

Click here for a full figure

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WinLoG 4.0

MODFLOW is a three-dimensional finite-difference ground-water model that was first published in 1984. It has a modular structure that allows it to be easily modified to adapt the code for a particular application. Many new capabilities have been added to the original model. OFR 00-92 (complete reference below) documents a general update to MODFLOW, which is called MODFLOW-2000 in order to distinguish it from earlier versions. MODFLOW-2000 simulates steady and nonsteady flow in an irregularly shaped flow system in which aquifer layers can be confined, unconfined, or a combination of confined and unconfined. Flow from external stresses, such as flow to wells, areal recharge, evapotranspiration, flow to drains, and flow through river beds, can be simulated. Hydraulic conductivities or transmissivities for any layer may differ spatially and be anisotropic (restricted to having the principal directions aligned with the grid axes), and the storage coefficient may be heterogeneous. Specified head and specified flux boundaries can be simulated as can a head dependent flux across the model’s outer boundary that allows water to be supplied to a boundary block in the modeled area at a rate proportional to the current head difference between a “source” of water outside the modeled area and the boundary block. MODFLOW is currently the most used numerical model in the U.S. Geological Survey for ground-water flow problems. In addition to simulating ground-water flow, the scope of MODFLOW-2000 has been expanded to incorporate related capabilities such as solute transport and parameter estimation.

MODFLOW is free and can be download from USGS website.

MODFLOW is DOS program. There are numerous WIndows-based Graphical User Interfaces (GUIs) for MODLFOW. You can find a few here.