Summary
Also known as
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Model type
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Model part of larger framework
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Note on status model
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Date note status model
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Technical specs
Supported platforms
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Unix, Windows
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Other platform
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Programming language
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Fortran77
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Other program language
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Code optimized
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Multiple processors implemented
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Nr of distributed processors
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Nr of shared processors
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Start year development
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1972
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Does model development still take place?
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No
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If above answer is no, provide end year model development
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1996
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Code development status
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When did you indicate the 'code development status'?
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Model availability
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As code
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Source code availability (Or provide future intension)
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Through web repository
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Source web address
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Source csdms web address
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Program license type
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Other
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Program license type other
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Memory requirements
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--
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Typical run time
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--
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In/Output
Describe input parameters
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Daily precipitation, daily evapotranspiration, and short-interval precipitation are required. Short-interval discharge is required for the optimization option and to calibrate the model. These time series are read from a WDM file. Roughness and hydraulics parameters and sub-catchment areas are required to define the basin. Six parameters are required to calculate infiltration and soil-moisture accounting. Up to three rainfall stations may be used. Two soil types may be defined. A total of 99 flow planes, channels, pipes, reservoirs, and junctions may be used to define the basin.
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Input format
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Other input format
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Describe output parameters
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The computed outflow from any flow plane, pipe, or channel segment for each storm period may be written to the output file or to the WDM file. A summary of the measured and simulated rainfall, runoff, and peak flows is written to the output file. A flat file containing the storm rainfall, measured flow (if available), and simulated flow at user selected sites can be generated. A flat file for each storm containing the total rainfall, the measured peak flow (if available), and the simulated peak flow for user-selected sites
can be generated.
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Output format
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Other output format
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Pre-processing software needed?
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No
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Describe pre-processing software
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Post-processing software needed?
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No
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Describe post-processing software
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Visualization software needed?
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No
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If above answer is yes
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Other visualization software
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Process
Describe processes represented by the model
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The rainfall-excess components include soil-moisture accounting, pervious-area rainfall excess, impervious-area rainfall excess, and parameter optimization. The Green-Ampt equation is used in the calculations of infiltration and pervious area rainfall excess. A Rosenbrock optimization procedure may be used to aid in calibrating several of the infiltration and soil-moisture accounting parameters. Kinematic wave theory is used for both overland-flow and channel routing. There are three solution techniques available: method of characteristics, implicit finite difference method, and explicit finite difference method. Two soil types may be defined. Overland flow may be defined as turbulent or laminar. Detention reservoirs may be simulated as linear storage or using a modified-Puls method. Channel segments may be defined as gutter, pipe, triangular cross section, or by explicitly specifying the kinematic channel parameters alpha and m.
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Describe key physical parameters and equations
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--
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Describe length scale and resolution constraints
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--
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Describe time scale and resolution constraints
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--
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Describe any numerical limitations and issues
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Testing
Describe available calibration data sets
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--
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Upload calibration data sets if available:
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Describe available test data sets
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Upload test data sets if available:
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Describe ideal data for testing
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Other
Do you have current or future plans for collaborating with other researchers?
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Comments
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TRAINING
Watershed Systems Modeling I (SW2008TC), offered annually at the USGS National Training Center.
Watershed Systems Modeling II (SW3018TC), offered upon request at the USGS National Training Center.
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DR3M
DR3M Information
Visit http://water.usgs.gov/software/DR3M/ for more information or to download the model.
History
Papers
DR3M Questionnaire
Issues
Help
Input Files
Output Files
Download
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