Define WTAQ parameters related to an obervation well

wtConfigureObservationWell(obname = "obs1", r = 30, iows = 0,
idpr = 0, rp = ifelse(idpr == 0, 0, 0.1), z1 = ifelse(iows ==
2, 0, 5), z2 = ifelse(iows == 2, 0, 10), xll = ifelse(idpr ==
0, 0, z2 - z1), zp = ifelse(iows == 2, 3, 0), tsobs = data.frame(t = 60 *
1:3, dd = c(0.4, 0.6, 0.7)), irun = 1)

## Arguments

obname |
Name of observation well or piezometer; up to 10 characters in length. |

r |
Radial distance from axis of pumped well to observation well or
piezometer, in units of length. |

iows |
Type of observation well or piezometer:
IOWS = 0: Partially penetrating observation well.
IOWS = 1: Fully penetrating observation well.
IOWS = 2: Observation piezometer. Default: 0 |

idpr |
Options for delayed response of observation well.
IDPR = 0: No delayed response.
IDPR = 1: Delayed response. Default: 0 |

rp |
Inside radius of the observation well (or piezometer) standpipe in the
interval over which water levels are changing during pumping, in units of
length. Enter 0 if IDPR = 0. Default: 0.1, but 0 if idpr = 0. |

z1 |
Depth below top of aquifer or initial water table to the top of screened
interval of observation well, in units of length. Use for IOWS = 0 or 1.
Enter 0 if IOWS = 2. Default: 5.0, but 0 if iows = 2. |

z2 |
Depth below top of aquifer or initial water table to the bottom of
screened interval of observation well, in units of length. Use for
IOWS = 0 or 1. Enter 0 if IOWS = 2. Default: 10.0, but 0 if iows = 2. |

xll |
Length of screened interval of observation well or piezometer, in units
of length. Must be 0 if IDPR = 0. Default: z2 - z1, but 0 if idpr = 0. |

zp |
Depth below top of aquifer or initial water table to center of piezometer,
in units of length. Use for IOWS = 2. Enter 0.0 if IOWS = 0 or 1.
Default: 3.0, but 0.0 if iows not equal to 2. |

tsobs |
data.frame with column *t* containing the user-specified times for
which drawdown at the observation well or piezometer will be calculated.
If the data.frame has no rows, no drawdowns are calculated for the
observation well or piezometer. The data.frame can (optionally) contain
the measured drawdown for the observation well or piezometer at the
corresponding times in an additional column *dd*. |

irun |
Option to suppress drawdown calculations for the observation well or
piezometer. Allows user to specify time-drawdown data, but those data are
ignored during the simulation. Options are:
IRUN = 0: Drawdowns not calculated.
IRUN = 1: Drawdowns calculated. |

## Value

list with elements *irun*, *obname*, *iows*, *idpr*,
*r*, *z1*, *z2*, *zp*, *rp*, *xll*, *tsobs*,
representing WTAQ parameters related to an observation well.
See description in Arguments section.

## See also