WMS:HSPF Pervious Land Segment

Clicking the Define Activities button in the Edit HSPF Attributes dialog when a pervious segment is selected will open the Pervious Land Activity dialog. To activate a module, click the toggle box in the Pervious Land Activity dialog box. This will activate the button that leads to the input dialog box for that module. This dialog allows activation of the following modules:

ATEMP

To access the ATEMP Parameters dialog box, press the ATEMP button in the Pervious Land Activity dialog box. The ATEMP Parameters dialog box lets the user enter the parameters for the ATEMP input table: ATEMP-DAT. Note that the dialog for ATEMP input for PERLND and IMPLND segments is the same. For information on the definition and function of specific variables in this module, see Section 4.4(1).2 – ATEMP Input of the HSPF Manual.[1]

SNOW

To access the SNOW Parameters dialog box, press the SNOW button in the Pervious Land Activity dialog box. The SNOW Parameters dialog box lets the user enter the parameters for the following SNOW input tables: ICE-FLAG, SNOW-PARM1, SNOW-PARM2, SNOW-INIT1, and SNOW-INIT2. Note that the dialog for SNOW input for PERLND and IMPLND segments is the same. For information on the definition and function of specific variables in this module, see Section 4.4(1).3 – SNOW Input of the HSPF Manual.[2]

PWATER

To access the PWATER Parameters dialog box, press the PWATER button in the Pervious Land Activity dialog box. The PWATER Parameters dialog box lets the user enter the main parameters for the PWATER input tables: PWAT-PARM1, PWAT-PARM2, PWAT-PARM3, PWAT-PARM4 and PWAT-STATE1. The following monthly value tables may also be input from this dialog if required: MON-INTERCEP, MON-UZSN, MON-MANNING, MON-INTERFLW, MON-IRC, and MON-LZETPARM. Some parameters require a single value for the entire simulation and others are allowed to vary monthly, depending on the flags set in the PWAT-PARM1 table. For information on the definition and function of specific variables in this module, see Section 4.4(1).4 – PWATER Input of the HSPF Manual.[3]

SEDMNT

To access the SEDMNT Parameters dialog box, press the SED button in the Pervious Land Activity dialog box. The SEDMNT Parameters dialog box lets the user enter the parameters for the SEDMNT input tables: SED-PARM1, SED-PARM2, SED-PARM3, and SED-STOR. The following monthly value tables may also be input from this dialog if required: MON-COVER, MON-NVSI. Some parameters require a single value for the entire simulation and others are allowed to vary monthly, depending on the flags set in the SED-PARM1 table. For information on the definition and function of specific variables in this module, see Section 4.4(1).5 – SEDMNT Input of the HSPF Manual.[4]

PQUAL

To access the PQUAL Parameters dialog box, press the PQUAL button in the Pervious Land Activity dialog box. This dialog box allows the user to specify up to 10 water quality constituents or pollutants in the outflows from a pervious land segment. The PQUAL Parameters dialog box lets the user enter the parameters for the PQUAL input tables: NQUALS, PQL-AD-FLAGS, QUAL-PROPS, QUAL-INPUT. The following monthly value tables may also be input from this dialog if required: MON-POTFW, MON-POTFS, MON-ACCUM, MON-SQOLIM, MON-IFLW-CONC, and MON-GRND-CONC. Some parameters require a single value for the entire simulation and others are allowed to vary monthly, depending on the flags set in the QUAL-PROPS table. For more information on these tables, see Section 4.4(1).8 – PQUAL input of the HSPF manual.[5]

The key to using this dialog is to note that the NQUAL field at the top of the box designates the total number of constituents to be modeled, while the Editing Constituent Number drop-down box indicates the constituent that is available for editing in the fields below.

MSTLAY

To access the MSTLAY Parameters dialog box, press the '$include "global.sbh"button in the Pervious Land Activity dialog box. The MSTLAY Parameters dialog box lets the user enter the parameters for the following MSTLAY input tables: MST-PARM, MST-TOPSTOR, MST-TOPFLX, MST-SUBSTOR, and MST-SUBFLX. Note that fields for input to tables VUZFG, UZSN-LZSN, and MON-UZSN are also included in this dialog. These tables will be active and require input if MSTLAY is being modeled without PWATER active. For information on the definition and function of specific variables in this module, see Section 4.4(1).9 – MSTLAY Input of the HSPF Manual.[6]

PEST

To access the PEST Parameters dialog box, press the PEST button in the Pervious Land Activity dialog box. This dialog box allows the user to specify up to 3 pesticides on a pervious land segment. The PEST Parameters dialog box lets the user enter the parameters for the PEST input tables: PEST-FLAGS, PEST-AD-FLAGS, SOIL-DATA, PEST-ID, PEST-THETA, PEST-FIRSTPM, PEST-CMAX, PEST-SVALPM, PEST-NONSVPM, PEST-DEGRAD, PEST-STOR1, PEST-STOR2. The required combination of these tables varies depending on the PEST-FLAG table values. For more information on these tables, see Section 4.4(1).10 – PEST input of the HSPF manual.[7]

The key to using this dialog is to note that the NPST field at the top of the box designates the total number of pesticides to be modeled, while the Now Editing Pesticide drop-down box indicates the constituent that is available for editing in the fields below.

NITR

To access the NITR Parameters dialog box, press the NITR button in the Pervious Land Activity dialog box. The NITR Parameters dialog box lets the user enter the parameters for the NITR input tables: NIT-FLAGS, NIT-AD-FLAGS. In addition, buttons which lead to dialogs for input to the following tables are found in this dialog: NIT-FSTGEN, NIT-FSTGEN, NIT-ORGPM, NIT-AMVOLAT, NIT-CMAX, NIT-SVALPM, NIT-UPTAKE, MON-NITUPT, SOIL-DATA2, CROP-DATES, NIT-YIELD, MON-NUPT-FR1, MON-NUPT-FR2. The required combination of these tables varies depending on the NIT-FLAG table values entered. In addition, a button that leads to the SOIL-DATA table dialog is active in this dialog if the PEST module is inactive. For information on the definition and function of specific variables in this module, see Section 4.4(1).11 – NITR Input of the HSPF Manual.[8]

PHOS

To access the PHOS Parameters dialog box, press the PHOS button in the Pervious Land Activity dialog box. The PHOS Parameters dialog box lets the user enter the parameters for the PHOS input tables: PHOS-FLAGS, PHOS-AD-FLAGS, and PHOS-FSTGEN. In addition, buttons which lead to dialogs for input to the following tables are found in this dialog: PHOS-FSTPM, PHOS-CMAX, PHOS-SVALPM, PHOS-UPTAKE, MON-PHOSUPT, PHOS-YIELD, MON-PUPT-FR1, MON-PUPT-FR2, PHOS-STOR1, PHOS-STOR2. The required combination of these tables varies depending on the PHOS-FLAG table values entered. In addition, a button that leads to the SOIL-DATA, SOIL-DATA2, and CROP-DATES tables dialog is active in this dialog if the PEST module and NITR module are inactive. For information on the definition and function of specific variables in this module, see Section 4.4(1).12 – PHOS Input of the HSPF Manual.[9]

TRACER

To access the TRACER Parameters dialog box, press the TRACER button in the Pervious Land Activity dialog box, explained above. The TRACER Parameters dialog box lets the user enter the parameters for the TRACER input tables: TRAC-ID, TRAC-AD-FLAGS, TRAC-TOPSTOR, and TRAC-SUBSTOR. For information on the definition and function of specific variables in this module, see Section 4.4(1).13 – TRACER Input of the HSPF Manual. [10]

Related Topics

• Impervious Land Segment
• Basin Data
• Entering HSPF Parameters
• Reach/Reservoir Data