HOB: Head Observation Package Pane

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The Head Observation package is used to compare observed heads with simulated heads computed by MODFLOW. The pane for this package is on the MODFLOW Packages and Programs dialog box under Observations.

The location of head observations is specified with point objects on the top view of the model.

The simulated heads are computed by interpolating from the nearest cell centers to the position of the observation. Head observations can extend over several model layers in which case cells from all the layers that are part of the observation will be used in calculating the simulated head.

If one or more of the cells used to calculate the simulated head goes dry, the simulated head can not be calculated. HOBDRY is the value that will be printed if a simulated head can not be calculated.

The MODFLOW Listing file will contain a list of the observed values and the simulated equivalents.

See also: Manage Head Observations dialog box.