Global Subcatchments Methods

Global subcatchment methods. More...

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Functions
int	subcatch_readParams (int subcatchIndex, char *tok[], int ntoks)
	Reads subcatchment parameters from a tokenized line of input data.
int	subcatch_readSubareaParams (char *tok[], int ntoks)
	Rreads subcatchment's subarea parameters from a tokenized line of input data.
int	subcatch_readLanduseParams (char *tok[], int ntoks)
	Reads assignment of landuses to subcatchment from a tokenized line of input data.
int	subcatch_readInitBuildup (char *tok[], int ntoks)
	Reads initial pollutant buildup on subcatchment from tokenized line of input data.
void	subcatch_validate (int subcatchIndex)
	Checks for valid subcatchment input parameters.
void	subcatch_initState (int subcatchIndex)
	Initializes state of a subcatchment.
void	subcatch_setOldState (int subcatchIndex)
	Replaces old state of subcatchment with new state.
double	subcatch_getFracPerv (int subcatchIndex)
	Determines what fraction of subcatchment area, including any LID area, is pervious.
double	subcatch_getStorage (int subcatchIndex)
	Finds total volume of water stored on a subcatchment's surface and its LIDs at the current time.
double	subcatch_getDepth (int subcatchIndex)
	Finds average depth of water over the non-LID portion of a subcatchment.
void	subcatch_getRunon (int subcatchIndex)
	Routes runoff from a subcatchment to its outlet subcatchment or between its subareas.
void	subcatch_addRunonFlow (int subcatchIndex, double flow)
	Updates the total runon flow (ft/s) seen by a subcatchment that receives runon flow from an upstream subcatchment.
double	subcatch_getRunoff (int subcatchIndex, double tStep)
	Computes runoff & new storage depth for subcatchment.
double	subcatch_getWtdOutflow (int subcatchIndex, double wt)
	Computes weighted combination of old and new subcatchment runoff.
void	subcatch_getResults (int subcatchIndex, double wt, float x[])
	Computes wtd. combination of old and new subcatchment results.

Detailed Description

Global subcatchment methods.

Function Documentation

subcatch_addRunonFlow()

void subcatch_addRunonFlow	(	int	subcatchIndex,
		double	flow
	)

Updates the total runon flow (ft/s) seen by a subcatchment that receives runon flow from an upstream subcatchment.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	flow	Runon flow rate (cfs) to subcatchment subcatchIndex

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subcatch_getDepth()

double subcatch_getDepth

(

int

subcatchIndex

)

Finds average depth of water over the non-LID portion of a subcatchment.

Parameters

[in]

subcatchIndex

Subcatchment index

Returns

Returns average depth of ponded water (ft)

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subcatch_getFracPerv()

double subcatch_getFracPerv

(

int

j

)

Determines what fraction of subcatchment area, including any LID area, is pervious.

Parameters

[in]

subcatchIndex

Subcatchment index

Returns

Returns fraction of subcatchment area that is pervious cover

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subcatch_getResults()

void subcatch_getResults	(	int	subcatchIndex,
		double	wt,
		float	x[]
	)

Computes wtd. combination of old and new subcatchment results.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	wt	Weighting factor
[out]	x	Array of subcatchment results

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subcatch_getRunoff()

double subcatch_getRunoff	(	int	subcatchIndex,
		double	tStep
	)

Computes runoff & new storage depth for subcatchment.

Parameters

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

The 'runoff' value returned by this function is the total runoff generated (in ft/sec) by the subcatchment before any internal re-routing is applied. It is used to compute pollutant washoff.

The 'outflow' value computed here (in cfs) is the surface runoff that actually leaves the subcatchment after any LID controls are applied and is saved to Subcatch[j].newRunoff.

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subcatch_getRunon()

void subcatch_getRunon

(

int

subcatchIndex

)

Routes runoff from a subcatchment to its outlet subcatchment or between its subareas.

Parameters

[in]

subcatchIndex

Subcatchment index

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subcatch_getStorage()

double subcatch_getStorage

(

int

subcatchIndex

)

Finds total volume of water stored on a subcatchment's surface and its LIDs at the current time.

Parameters

[in]

subcatchIndex

Subcatchment index

Returns

Returns total volume of water stored on subcatchment's surface (ft3)

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subcatch_getWtdOutflow()

double subcatch_getWtdOutflow	(	int	subcatchIndex,
		double	f
	)

Computes weighted combination of old and new subcatchment runoff.

Parameters

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

Returns

Returns weighted runoff value (ft/sec)

subcatch_initState()

void subcatch_initState

(

int

subcatchIndex

)

Initializes state of a subcatchment.

Parameters

[in]

subcatchIndex

Subcatchment index

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subcatch_readInitBuildup()

int subcatch_readInitBuildup	(	char *	tok[],
		int	ntoks
	)

Reads initial pollutant buildup on subcatchment from tokenized line of input data.

Parameters

[in]	tok	Array of string tokens
[in]	ntoks	Number of tokens

Returns

Error code

Data has format: Subcatch pollut initLoad .... pollut initLoad

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subcatch_readLanduseParams()

int subcatch_readLanduseParams	(	char *	tok[],
		int	ntoks
	)

Reads assignment of landuses to subcatchment from a tokenized line of input data.

Parameters

[in]	tok	Array of string tokens
[in]	ntoks	Number of tokens

Returns

Error code

Data has format: Subcatch landuse percent .... landuse percent

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subcatch_readParams()

int subcatch_readParams	(	int	subcatchIndex,
		char *	tok[],
		int	ntoks
	)

Reads subcatchment parameters from a tokenized line of input data.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	tok	Array of string tokens
[in]	ntoks	Number of tokens

Returns

Error code

Data has format: Name RainGage Outlet Area Imperv Width Slope CurbLength Snowpack

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subcatch_readSubareaParams()

int subcatch_readSubareaParams	(	char *	tok[],
		int	ntoks
	)

Rreads subcatchment's subarea parameters from a tokenized line of input data.

Parameters

[in]	tok	Array of string tokens
[in]	ntoks	Number of tokens

Returns

Error code

Data has format: Subcatch Imperv_N Perv_N Imperv_S Perv_S PctZero RouteTo (PctRouted)

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subcatch_setOldState()

void subcatch_setOldState

(

int

subcatchIndex

)

Replaces old state of subcatchment with new state.

Parameters

[in]

subcatchIndex

Subcatchment index

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subcatch_validate()

void subcatch_validate

(

int

subcatchIndex

)

Checks for valid subcatchment input parameters.

Parameters

[in]

subcatchIndex

Subcatchment index

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