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iMOD User Manual version 5.2 (html)


10.9Data Set 8: Active packages

Data Set 8

IPM,NLSAVE,ILSAVE(NLSAVE),KEY

IPM

This represents whether a specific time independent module (mod) / time dependent package (pck) is active in the current simulation. The following package are supported:

Key

Act

Description

(mod)

CAP

0/1

Usage of the unsaturated zone package

(mod)

BND

0/1

(compulsory) Usage of boundary conditions

(mod)

SHD

0/1

(compulsory) Usage of starting heads

(mod)

KDW

0/1

Usage of hydraulic conductance

(mod)

VCW

0/1

Usage of vertical resistances

(mod)

KHV

0/1

Usage of horizontal permeabilities

(mod)

KVA

0/1

Usage of vertical anisotropy for aquifers

(mod)

KVV

0/1

Usage of vertical permeabilities

(mod)

STO

0/1

Usage of storage coefficients

(mod)

TOP

0/1

Usage of top of aquifers

(mod)

BOT

0/1

Usage of bottom of aquifers

(mod)

PST

0/1

Usage of parameter estimation

(mod)

PWT

0/1

Usage of the purge-water table package

(mod)

ANI

0/1

Usage of the horizontal anisotropy package

(mod)

HFB

0/1

Usage of the horizontal flow barrier package

(mod)

IBS

0/1

Usage of interbed storage/subsidence

(mod)

SFT

0/1

Usage of streamflow thickness

(pck)

WEL

0/1

Usage of the well package

(pck)

DRN

0/1

Usage of the drainage package

(pck)

RIV

0/1

Usage of the river package

(pck)

EVT

0/1

Usage of the evapotranspiration package

(pck)

GHB

0/1

Usage of the general-head-bound. Package

(pck)

RCH

0/1

Usage of the recharge package

(pck)

OLF

0/1

Usage of the overland flow package

(pck)

CHD

0/1

Usage of the constant-head package

(pck)

ISG

0/1

Usage of the segment package

It is easy to turn an IPM on or off by assigning 0 (off) or 1 (on). There is no need to adjust the Runfile for these adjustments. It is not necessary to include all the packages and/or packages in a runfile and the order you specify is irrelevant. Of course, the packages BND, SHD, (KDW or KHV), (VCW or KVV) are obliged for any (multi-layered) model!

NLSAVE

Determines the number of model layers for which output need to be saved on disk. NLSAVE may be larger than NLAY, however all layers that exceed the current simulation will be neglected.
Important Note: the NLSAVE settings for BND/bdgbnd or STO/bdgsto determine the layers to be saved for all fluxes (bdgbnd, bdgsto, bdgflf, bdgfrf and bdgfff). This means that settings for only KHV or only KVV are always neglected and will be overruled by the settings given for BND or STO.
Important Note 2: the NLSAVE settings for ISG/bdgisg determine the layers to be saved for the river fluxes (bdgriv). The NLSAVE settings for the RIV-package are overruled by the settings given for ISG.

ILSAVE

This parameter stores the model layers for each IPM keyword for ILSAVE model layers. The model layers may be given in any order, e.g. 4, 5, 1. Any layer that exceeds the current NLAY is neglected.
Important Note: the ILSAVE settings for BND/bdgbnd or STO/bdgsto determine the layers to be saved for all fluxes (bdgbnd, bdgsto, bdgflf, bdgfrf and bdgfff). This means that settings for only KHV or only KVV are always neglected and will be overruled by the settings given for BND or STO.
Important Note 2: the ILSAVE settings for ISG/bdgisg determine the layers to be saved for the river fluxes (bdgriv). In case ILSAVE settings are defined for RIV, these are overruled by the settings given for ISG.

=0

Identifies all modellayers

\(>\)0

Modellayer identification
The following result will be saved:

Key

NAME

Unit

Description

PST

-

-

No output available

CAP

BDGCAP

m\({}^{3}\)/day

Flux between the unsaturated zone and the saturated zone

BND

BDGBND

m\({}^{3}\)/day

Flux for constant head boundaries

SHD

HEAD

m

Hydraulic head

KDW

BDGFRF

m\({}^{3}\)/day

Flux over the eastern model faces

BDGFFF

m\({}^{3}\)/day

Flux over the southern model faces

VCW

BDGFLF

m\({}^{3}\)/day

Flux over the lower model faces

KHV

BDGFRF

m\({}^{3}\)/day

Flux over the eastern model faces

BDGFFF

m\({}^{3}\)/day

Flux over the southern model faces

KVV

BDGFLF

m\({}^{3}\)/day

Flux over the lower model faces

STO

BDGSTO

m\({}^{3}\)/day

Fluxes for storage

TOP

-

-

No output available

BOT

-

-

No output available

PST

\PEST folder

-

No output available, other than *.txt and *.ipf files that write performance and residuals of optimalisation

KVA

-

-

No output available

PWT

-

-

No output available

ANI

BDGANI

m\({}^{3}\)/day

Fluxes caused by anisotropy

HFB

-

-

No output available

IBS

BDGIBS

m\({}^{3}\)/day

Fluxes for interbed storage

SFT

-

-

No output available

WEL

BDGWEL

m\({}^{3}\)/day

Fluxes for wells

DRN

BDGDRN

m\({}^{3}\)/day

Fluxes out drainage

RIV

BDGRIV

m\({}^{3}\)/day

Fluxes for rivers

EVT

BDGEVT

m\({}^{3}\)/day

Fluxes out evapotranspiration

GHB

BDGGHB

m\({}^{3}\)/day

Fluxes for general head boundaries

RCH

BDGRCH

m\({}^{3}\)/day

Fluxes for recharge

OLF

BDGDRN

m\({}^{3}\)/day

Fluxes out overland flow.

CHD

BDGBND

m\({}^{3}\)/day

Flux over constant head boundaries

ISG

BDGISG

m\({}^{3}\)/day

Fluxes for rivers (fast SOBEK)

All fluxes that extract water from a specific model cell are negative. Therefore, seepage water values are negative, within the file BDGFLF. Identical elements within one single model cell are lumped together in the output file, e.g. fluxes from different drainage systems in a single model cell add together. The naming convention for all files is:

DELT=0

[NAME]_[SNAME]_l[ILAY].idf; e.g. head_steady-state_l1.idf or bdgflf_quarter_l10.idf

DELT\(>\)0

[NAME]_[yyyymmdd]_l[ILAY].idf; e.g. head_20101231_l1.idf or bdgdrn_20110814_l1.idf
Whenever the option IBDG=1 (see Data Set 4), the naming convention will be including the system number of the package, e.g.: bdgrivsys1_20110814_l1_.idf The number of system(s) is defined by the NFILES parameter in Data Set 10.

KEY

Packages should be specified between brackets: “(“and “)” so iMODFLOW can recognize the keyword. It will be used to compare this with the variable KEY in Data Set 10.