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Navigation: Online Guide to MODFLOW > Groundwater Flow Process > Output Control

OC - Output Control Option

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Abbreviation in Name file

OC

Purpose

The Output Control Option is used to specify which head, drawdown, or budget data should be printed or saved.

Documentation

Harbaugh, A.W., Banta, E.R., Hill, M.C., and McDonald, M.G., 2000, MODFLOW-2000, the U.S. Geological Survey modular ground-water model -- User guide to modularization concepts and the Ground-Water Flow Process: U.S. Geological Survey Open-File Report 00-92, 121 p.

Harbaugh, A.W., 2005, MODFLOW-2005, the U.S. Geological Survey modular ground-water model -- the Ground-Water Flow Process: U.S. Geological Survey Techniques and Methods 6-A16. https://doi.org/10.3133/tm6A16

release.txt

ofr-00-92-errata.pdf

modpath.txt

Hanson, R.T., Boyce, S.E., Schmid, Wolfgang, Hughes, J.D., Mehl, S.M., Leake, S.A., Maddock, Thomas, III, and Niswonger, R.G., 2014, One-Water Hydrologic Flow Model (MODFLOW-OWHM): U.S. Geological Survey Techniques and Methods 6–A51, 120 p., https://dx.doi.org/10.3133/tm6A51.

Related Packages

HYDMOD Package

Supported in

MODFLOW-2000

MODFLOW-2005

MODFLOW-LGR

MODFLOW-CFP

MODFLOW-NWT

MODFLOW-OWHM

Other Notes

The Output Control Option is optional.

See the Frequently Asked Questions for information on how to read data from binary files generated by MODFLOW.

Input Instructions

Input to the Output Control Option of the Groundwater Flow Process is read from the file that is specified as type "OC" in the name file. If no "OC" file is specified, default output control is used. Under the default, head and overall budget are written to the listing file (printed) at the end of every stress period. The default printout format for head and drawdown is 10G11.4.

There are two ways to specify Output Control data: words or numeric codes. One of these methods must be used throughout any simulation.