Description Usage Arguments Value References
Reads information from a MODFLOW STR package file. The stream package routes stream flow through connected cells and simultaneously calculates water exchange between streams and the aquifer.
1 | read.STR(filename, nSP)
|
filename |
character string; the package file to read |
nSP |
integer |
list with class STR.MFpackage:
$header
1-row data.frame:
..$MXSTRM
(int): maximum number of stream reaches
..$NSS
(int): maximum number of segments
..$NTRIB
(int): maximum number of tributary segments that join
one downstream segment
..$NDIV
(int): flag, which when positive, specifies that
diversions from segments are to be simulated
..$ICALC
(int): flag, which when positive, specifies that
stream stages in reaches are to be calculated
..$CONST
(num): Constant value used in calculating stream stage in
reaches. It is specified whenever ICALC is greater than zero. A unit
conversion between stream flow units and the units used for the MODFLOW
simulation.
..$ISTCB1
(int): unit number to which to save stream-aquifer
exchange
..$ISTCB2
(int): unit number to which to save stream flow
$spheaders
data.frame with 1 row for each stress period:
..$ITMP
(int): if < 0, read stream data from the previous
stress period, otherwise it is the number of reaches to read for the
current stress period
..$IRDFLG
(int): if > 0, don't print input data for this sp
..$IPTFLG
(int): if > 0, don't print results for this sp
$data
data.table:
..$sp
(int); stress period (the key)
..$L
(int): layer
..$R
(int): row
..$C
(int): column
..$Seg
(int): number assigned to a group of reaches
..$Reach
(int): sequential number in a segment that begins with one
for the farthest upstream reach and continues in downstream order to the
last reach in the segment
..$Flow
(num): streamflow, in length cubed per time, entering
a segment
..$Stage
(num): stream stage, in units of length
..$Cond
(num): streambed hydraulic conductance
..$Sbot
(num): elevation of the bottom of the streambed
..$Stop
(num): elevation of the top of the streambed
if ICALC > 0
{
..$Width
(num): width of the stream channel
..$Slope
(num): slope of the stream channel in each reach
..$Rough
(num): Manning's roughness coefficient for each stream
reach
}
if NTRIB > 0
{
..$ITrib1
(int): number of the first tributary segment
...
..$ITrib<NTrib>
(int):
}
if NDIV > 0
{
..$Iupseg
(int): number of the upstream segment from which
water is diverted
}
Prudic, D.E., 1989. Documentation of a Computer Program to Simulate Stream-Aquifer Relations Using a Modular, Finite-Difference Ground-water Flow Model, Carson City, Nevada. Available at: https://pubs.er.usgs.gov/publication/ofr88729.
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