LPF PACKAGE FLAGS
Capitain Reef Complex Groundwater Availability Model v1.01
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HDRY
The head value that is assigned to cells that are converted to dry during a simulation.

HDRY 	= -1.000000e+030 (for all layers)
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LAYTYP
0 = 	confined
>0 	= 	convertible between confined and unconfined
<0 	= 	convertible unless the THICKSTRT option is in effect. When THICKSTRT is in effect, a negative value of
		LAYTYP indicates that the layer is confined, and its saturated thickness will be computed as STRT-BOT.

LAYTYP = 0 (for all layers)
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CHANI 
Contains a value for each layer that is a flag or the horizontal anisotropy. If CHANI is less than or equal to
0, then variable HANI defines horizontal anisotropy. If CHANI is greater than 0, then CHANI is the horizontal
anisotropy for the entire layer, and HANI is not read. If any HANI parameters are used, CHANI for all layers must
be less than or equal to 0.

CHANI	= -1.000000e+000 (for all layers)
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LAYVKA
contains a flag for each layer that indicates whether variable VKA is vertical hydraulic conductivity or
the ratio of horizontal to vertical hydraulic conductivity.
0 =		indicates VKA is vertical hydraulic conductivity
not 0 =	indicates VKA is the ratio of horizontal to vertical hydraulic conductivity, where the horizontal hydraulic
		conductivity is specified as HK in item 10.

LAYVKA = 0 (for all layers)
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LAYWET
0 	=	wetting is inactive
not 0 = wetting is active

LAYWET	= 0 (for all layers)
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BOUNDARY CONDITION PACKAGE FLAGS
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RECHARGE PACKAGE

NRCHOP
is the recharge option code. Recharge fluxes are defined in a two-dimensional array,
RECH, with one value for each vertical column. Accordingly, recharge is applied to one cell in
each vertical column, and the option code determines which cell in the column is selected for
recharge.
1 - Recharge is only to the top grid layer.
2 - Vertical distribution of recharge is specified in array IRCH.
3 - Recharge is applied to the highest active cell in each vertical column. A constant head
	node intercepts recharge and prevents deeper infiltration.

NRCHOP = 3

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EVT PACKAGE

NEVTOP 
is the evapotranspiration (ET) option code. ET parameters (ET surface, maximum ET
rate, and extinction depth) are specified in two-dimensional arrays, SURF, EVTR, and EXDP,
with one value for each vertical column. Accordingly, ET is calculated for one cell in each
vertical column. The option codes determine for which cell in the column ET will be calculated.
1 = ET is calculated only for cells in the top grid layer.
2 = The cell for each vertical column is specified by the user in array IEVT.

NEVTOP = 1
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