Global Surface Pollutant Buildup/Washoff Methods

Global surface pollutant buildup/washoff methods. More...

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Functions
void	surfqual_initState (int subcatchIndex)
	Initializes pollutant buildup, ponded mass, and washoff.
void	surfqual_getWashoff (int subcatchIndex, double runoff, double tStep)
	Computes new runoff quality for a subcatchment.
void	surfqual_getBuildup (int subcatchIndex, double tStep)
	Adds to pollutant buildup on subcatchment surface.
void	surfqual_applyAPIBuildup (int subcatchIndex)
	Applies the buildup of a pollutant over a subcatchment for a given time step.
void	surfqual_sweepBuildup (int subcatchIndex, DateTime aDate)
	Reduces pollutant buildup over a subcatchment if sweeping occurs.
double	surfqual_getWtdWashoff (int subcatchIndex, int pollutIndex, double wt)
	Finds wtd. combination of old and new washoff for a pollutant.

Detailed Description

Global surface pollutant buildup/washoff methods.

Function Documentation

surfqual_applyAPIBuildup()

void surfqual_applyAPIBuildup

(

int

subcatchIndex

)

Applies the buildup of a pollutant over a subcatchment for a given time step.

Parameters

[in]

subcatchIndex

Subcatchment index

Applies the buildup of a pollutant over a subcatchment for a given time step. API use is unconstrained by whether its is raining or not and other factors that apply to the inbuilt buildup function. Negative buildup may be applied in which case the function will not allow the buildup to go below zero.

Applies the buildup of a pollutant over a subcatchment for a given time step.

Parameters

[in]

subcatchIndex

Subcatchment index

Applies the buildup of a pollutant over a subcatchment for a given time step. API use is unconstrained by whether its is raining or not and other factors that apply to the inbuilt buildup function. Negative buildup may be applied in which case the function will not allow the buildup to go below zero.

Applies the buildup of a pollutant over a subcatchment for a given time step.

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surfqual_getBuildup()

void surfqual_getBuildup	(	int	subcatchIndex,
		double	tStep
	)

Adds to pollutant buildup on subcatchment surface.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	tStep	Time step (sec)

Adds to pollutant buildup on subcatchment surface.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	tStep	Time step (sec)

Adds to pollutant buildup on subcatchment surface.

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surfqual_getWashoff()

void surfqual_getWashoff	(	int	subcatchIndex,
		double	runoff,
		double	tStep
	)

Computes new runoff quality for a subcatchment.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	runoff	Total subcatchment runoff before internal re-routing or LID controls (ft/sec)
[in]	tStep	Time step (sec)

Considers three pollutant generating streams that are combined together:

1. washoff of pollutant buildup as described by the project's land use washoff functions,
2. complete mix mass balance of pollutants in surface ponding on non-LID area due to runon, wet deposition, infiltration, & evaporation,
3. wet deposition and runon over LID areas.

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surfqual_getWtdWashoff()

double surfqual_getWtdWashoff	(	int	j,
		int	p,
		double	f
	)

Finds wtd. combination of old and new washoff for a pollutant.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	pollutIndex	Pollutant index
[in]	wt	Weighting factor

Returns

Returns pollutant washoff value

surfqual_initState()

void surfqual_initState

(

int

subcatchIndex

)

Initializes pollutant buildup, ponded mass, and washoff.

Parameters

[in]

subcatchIndex

Subcatchment index

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surfqual_sweepBuildup()

void surfqual_sweepBuildup	(	int	subcatchIndex,
		DateTime	aDate
	)

Reduces pollutant buildup over a subcatchment if sweeping occurs.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	aDate	Current date/time

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