Online Guide to MODFLOW-2005

Observation Process

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Observation Process

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Observation Process

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The Observation process is used to compare model-generated values of head, flux, or advective transport with observed values.  During model calibration, the goal is to reduce the discrepencies between the two.  Many of the input files for the observation process are linked to specific input files for the Ground-Water Flow process.

Input File For All Observations (required in MODFLOW-2000, not included in MODFLOW-2005 or MODFLOW-LGR)
Head-Observation package (optional)
Constant-Head Flow Observation package (optional)
Drain Observation package (optional)
Drain Return Observation package (optional, not included in MODFLOW-2005 or MODFLOW-LGR)
River Observation package (optional)
General-Head-Boundary Observation package (optional)
Stream Observation package (optional)
Advective-Transport Observation package (optional, not included in MODFLOW-2005 or MODFLOW-LGR)