OWLS Version 1.0 Fact Sheet

Major Features
     3-dimensional;
     Vector-based;
     Distributed;
     Physically-based;
     Static and Dynamic Visualized in 2-D and 3-D;
     Fit any shapes and varied sizes of cells
       (rectangular mesh, triangular mesh, contour mesh, ...);
     Automatic identify channel network;
     PC Window Interface;
     Straight-forward parameter input;
     Designed for 16-bit and faster under 32-bit system;
     User extendable and customizable;
     Free by World Wide Web or anonymous ftp, but not "public domain";
     Written in the powerful C++ language;
     Build-in platform-independent graphic interface;
     Saves images in BMP formats;

Data Processing Model

     Handle DEM type data and automatically convert into triangular vector mesh format;
     Convert observed meteorological data into OWLS format (precipitation, air temperature);
     Convert observed hydrologic data into OWLS format;

Geomorphologic Model

     Extracts 3-D vector-based flowpath from topographic data;
     Extracts 3-D vector drainage network from topographic data;
     Extracts 3-D vector drainage boundary from topographic data;
     Simulates stream cross-section geometry;

Visualization Model

     3-D Static View: Terrain, Contour, Soil, Stream, Boundary ...;
     2-D Map: Terrain, Contour, Soil, Stream, Boundary ...;
     3-D Dynamic View: Sky-cuise, Time-cuise ...;
     3-D Dynamic Watershed Hydrology:  Hillslope Processes (flow, water depth, moisture content),
         Channel Process (discharge, velocity, depth and width);
     2-D Dynamic Watershed Hydrology: Hillslope Processes (flow, water depth, moisture),
         Channel Process (discharge, velocity);
     2-D Chart: Hydrograph, Precipitation, Air temperature, Runoff, Flow depth, Water depth.

Hydrologic Model

     General Models: Solar Radiation Model, Precipitation Distribution Model,
        Air Temperature Extension Model, Air Temperature Distribution Model,
        Equivalent Rectangle Simplification (ERS) Model;
     Canopy Model: Interception for Rain and Snow, ET;
     Surface Model: Infiltration, ET, Kinematic Wave Flow Routing;
     Soil Model: ET, Flow Routing;
     Macropore System: Macropore Flow Routing;
     Channel Routing: Kinematic Wave Flow Routing;

Model Output

     Graphical Output;
     Binary Dynamic Data Output;
     Text Data Output;

Specifications

     Sophisticated Dynamic Memory Allocation Algorithm enables the model to
       run big job under small PC computer.
     Object-Orientated Programming (OOP) allows code reusable and expandation,
       easy to add other applications (e.g. sedimentation, land-slide, chemical-transfer...);


Minimum System Requirements

     MS Window 3.1 or up;
     486 or up;
     8MB RAM;
     5+MB Disk Space depending upon the size of data;

More Information

     Web site: http://www.hydromodel.com
     FTP site: ftp://hydromodel.com
     E-Mail: wilson@hydromodel.com


Last update: Feb. 1997
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Copyright (c) 1996, Wilson H. Chen
All Rights Reserved.