WMS:HSPF Global Options

The HSPF Global Options dialog box is used to initialize the HSPF data for every hydrologic unit of the hydrologic tree and to set up parameters for the overall simulation. This dialog is opened by selecting the Global Options command from the HSPF menu.

The data for HSPF must be initialized before the user can access it; many features within the HSPF interface will be dimmed and remain dimmed until the user initializes the HSPF data. By clicking on the Initialize HSPF Data button within the Global Options dialog box, the user initializes all HSPF data within the watershed. The Delete HSPF Data button will remove all HSPF data from memory. This may be useful if the user wants to start over with HSPF input, or wants to use another model within WMS.

Once the HSPF data are initialized, several parameters are required in the HSPF Global Options dialog. Parameters required in the GLOBAL block of HSPF are input in this dialog. These include title, output levels, units flag, run flag, starting and ending times, and time step. Consult Section 4.1 of the HSPF manual for details on these parameters.

Also in this dialog are fields to define the input and output filenames of the HSPF run. Note that currently WMS only supports one WDM file and one output file per simulation. If more that one WDM file contains input for the simulation, these files should be merged for use with WMS. The filename fields complete the data necessary for the FILES block of HSPF. Each file name should have the appropriate extension attached in these fields. These file names may be set to the same prefix by entering the prefix in the designated field and clicking on the Update Prefix button.

Related Topics

• Overview of HSPF
• The HSPF Interface
• Entering HSPF Parameters
• Basin Data
• Mass Links
• WDM File Interaction