wtConfigureDrainage: Drainage parameter values

In KWB-R/kwb.wtaq: Interface to WTAQ Drawdown Model (http://water.usgs.gov/ogw/wtaq/)

Drainage parameter values

Description

Define drainage-related WTAQ parameters

Usage

wtConfigureDrainage(idra = 2, alpha = c(), acc = 5, akk = 31.7, 


    amm = 100, axmm = 10)

Arguments

idra	Type of drainage at water table. Enter 0 if AQTYPE = CONFINED. Three options are provided: IDRA = 0: Instantaneous drainage. IDRA = 1: Gradual drainage. IDRA = 2: Drainage with unsaturated-zone characterization.
alpha	Only used if idra = 1. Drainage constants, in units of inverse time. Maximum of 5 values is allowed.
acc	Only used if idra = 2. Soil-moisture retention exponent, in units of inverse length.
akk	Only used if idra = 2. Relative hydraulic-conductivity exponent, in units of inverse length. The value specified must be greater than or equal to that specified for ACC.
amm	Only used if idra = 2. Initial unsaturated-zone thickness above the capillary fringe, in units of length.
axmm	Only used if idra = 2. The unsaturated-zone thickness above the capillary fringe above which an assumption of an infinitely thick unsaturated-zone thickness is assumed, in units of length.

Value

list with elements idra, alpha, acc, akk,

amm, axmm, representing WTAQ parameters related to drainage.

See descriptions in Arguments section.

Author(s)

Hauke Sonnenberg

See Also

wtConfigure

KWB-R/kwb.wtaq documentation built on June 17, 2022, 3:05 a.m.