WinFlow is a powerful yet easy-to-use ground-water flow model for Microsoft Windows. WinFlow is a true Windows MDI program that takes advantage of the many sophisticated features users have come to expect from Windows software.

WinFlow is an interactive, analytical model that simulates two-dimensional steady-state and transient ground-water flow (both confined and unconfined aquifers) with multiple wells, uniform recharge, circular recharge/discharge areas, and line sources or sinks. The steady-state model is based on analytical functions developed by Strack (i.e., Analytic Element Method). The transient model uses equations developed by Theis (1935) for confined aquifers and by Hantush and Jacobs (1955) for leaky-confined aquifers, respectively. Any of these functions may be added to an uniform regional gradient for confined and leaky-confined aquifers.

Other WinFlow features include:

• Depicts the flow field using streamlines, particle traces, and water-level contours;
• Imports map files in DXF format, QuickFlow format, or ModelCad format;
• Imports data files from QuickFlow;
• Calibration targets and calculation of calibration statistics;
• Double-click an element to edit;
• Click and drag to reposition elements, streamlines, or particles;
• Multiple Document Interface (MDI) - multiple models may be open at one time;
• Cut, copy, and paste elements to the clipboard;
• Maps may be printed using any Windows device driver;
• WYSIWYG printing with print preview and user-defined margins;
• Full context-sensitive help system (the entire manual is on-line);
• Drag-and-drop input files into the WinFlow window.

See also the WinTran program by the same developer.

SYSTEM REQUIREMENTS

The WinFlow program requires at least an Intel 80386 based computer with 4 Mb RAM, a math coprocessor, DOS 5.0, Windows 3.1, about 2 Mb disk space to install the program, and VGA graphics or better.

Developer: Environmental Simulations, Inc., Herndon, Virginia.