GetWellConfig: Get Well Completion and Pumping Rate in Model Space
In USGS-R/wrv: Wood River Valley Groundwater-Flow Model

Description Usage Arguments Value Author(s) Examples

This function determines well completions and pumping rates in model space. The pumping rate is specified for each model cell intersecting a well's open interval(s) and calculated by multiplying the estimated pumping demand by the cell's transmissivity fraction. The transmissivity fraction is calculated by dividing the cell's aquifer transmissivity by the sum of all transmissivity values for cells belonging to the same well. The transmissivity fraction calculation assumes saturated conditions in the model cell.

1	GetWellConfig(rs.model, wells, well.col, rate.col = NULL, lay2.hk.tol = 0.01)

`rs.model`	RasterStack. Composed of raster layers describing the model grid and hydraulic conductivity distribution: `lay1.top`, `lay1.bot`, `lay2.bot`, `lay3.bot`, `lay1.hk`, `lay2.hk`, and `lay3.hk`.
`wells`	SpatialPointsDataFrame. Average pumping rate for each well during various times.
`well.col`	character. Column name of the well identifier field.
`rate.col`	character. Vector of column names for the pumping rate fields.
`lay2.hk.tol`	numeric. Hydraulic conductivity tolerance for model cells in layer 2. Used to prevent pumping in the aquitard layer of the aquifer system. Pumping is prohibited in model layer 2 cells with hydraulic conductivity values less than `lay2.hk.tol` and a well opening isolated to layer 2; for these cases, pumping is allocated to the adjacent layer 1 cell.

Returns an object of class data.frame with the following components:

...: unique identifier assigned to a well, its name is specified by well.col.
lay,row,col: layer, row, and column number of a model cell, respectively.
hk: hydraulic conductivity of the model cell, in meters per day.
thk: vertical length of the well opening (open borehole or screen) in the model cell, in meters. A value of zero indicates that the well opening is unknown or below the modeled bedrock surface.
frac: transmissivity fraction for a model cell, where transmissivity is defined as hk multiplied by thk.
...: pumping rate allocated to the model cell for each time period specified by rate.col, in cubic meters per day. The pumping rate is calculated by multiplying the pumping demand for a well (specified in wells) by frac.