WMS:HSPF Edit Parameters

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Edit HSPF Attributes dialog

Attributes or parameters for all land and reach segments of the topologic tree are viewed and/or edited using the Edit HSPF Attributes dialog. This dialog is accessed by selecting the Edit HSPF Attributes command from the HSPF menu or by double-clicking on a basin or an outlet when HSPF is the active model.

If a basin or multiple basins are selected on the topologic tree, the Basin Data portion of this dialog will be active and a list of all segments in the selected basins will be displayed in the text window. Selecting a segment from the widow will active the fields and buttons to edit/view the associated parameters. If an outlet is selected on the topologic tree, the Reach/Reservoir Data section of the dialog will be active. The parameters associated with the selected reach/reservoir may be viewed/edited using the active buttons.

Once the Edit HSPF Attributes dialog is open, it will remain open until selecting the Done button. This enables switching between basins or outlets quickly and define the necessary parameters without closing and opening the dialog for each hydrograph station.

Basin Data

The portion of the Edit HSPF Attributes dialog box that handles basin data is mainly a starting point for entering the rest of the basin segment’s HSPF data. The text in the window lists the land segments within the selected basin. When a segment is selected within the text window, it becomes possible to edit the attributes of that segment. The area section, above the basin section, shows the sum of the areas of the individual basin segments as well as the area of the basin as calculated by WMS if a terrain model was used to calculate basin data. A radio group is located in the basin area of the dialog box to allow specifying whether the segment is pervious or impervious. The Define Activities button brings up dialog which allows activating modules (i.e. PWAT, PQUAL, IWAT, etc.) for the selected segment and define the required parameters. The External Targets button allows defining the output for the selected segment as required by the EXT TARGETS block of HSPF.

Below the text window listing the basin segments, buttons may be found to add or delete segments within the basin. The new basin segments default to pervious land segments with no specified area. This a way to segment a basin manually if no land use data exist to perform automatic segmentation.

Reach/Reservoir Data

The portion of the Edit HSPF Attributes dialog box that handles the input data for the RCHRES module of HSPF is located at the bottom of the Edit HSPF Attributes dialog box. Within that small section of the dialog box, the name of the RCHRES segment may be edited. The Define Activities button located next to the edit field accesses a dialog used to activate the desired modules of RCHRES. The External Targets button allows defining the output for the selected reach/reservoir as required by the EXT TARGETS block of HSPF.

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