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#redirect [[GMS:MODFLOW-USG Observations]]

#redirect [[GMS:MODFLOW-USG Observations]]

#redirect [[GMS:MODFLOW-USG Observations]]

#redirect [[GMS:MODFLOW-USG Observations]]

#redirect [[GMS:MODFLOW-USG Observations]]

#redirect [[GMS:MODFLOW-USG Observations]]

[[File:MF6-OBS-PEST package.png|thumb|400px|right|The ''MDOFLOW 6 PEST Observations'' dialog]] ...dditional observation features beyond what comes with MODFLOW 6, including observations at arbitrary locations and times, comparison of observed and computed value

[[File:MF6-OBS dialog_v2.png|thumb|400px|right|The ''Observations (OBS) Dialog'']] The ''Observations (OBS) Package'' dialog is accessed by double-clicking on the OBS package un

...ist in the process of calibrating a groundwater model. Both point and flux observations are supported. When a computed solution is imported to GMS, the point and f ...ibration target. While point observations can be used with any model, flow observations can only be used with MODFLOW.

#REDIRECT [[WMS:GSSHA Observations#Define GSSHA Observation]]

#REDIRECT [[WMS:GSSHA Observations#Define GSSHA Observation]]

#* MODFLOW 6 – PEST Observations, Steady State #* MODFLOW 6 – PEST Observations, Transient

...types that are specific to the HydroGeoSphere model: boundary conditions, observations, and hydrographs. The coverage type is set by right-clicking on a coverage ==Observations Coverage==

The concentration observations may be from observation points. The observations are specified in coverages in the map tools within GMS. Coverages selected

...gle error value. In a transient model, the error value includes all of the observations at the various times. The error shown in this dialog is different from the *''Mean Residual'' – Average error for the observations. This can be misleading because the positive and negative errors can cancel

...SHA" and the "[[WMS:GSSHA Storm Drain|GSSHA Storm Drain]]" coverage types. Observations can be stored for data comparison, or they can be used with the GSSHA autom [[File:WMS GSSHA Observations dialog.png|thumb|right|600 px|''GSSHA Observations'' dialog.]]

[[Category:Observations]]

...ons|point observations]] and the [[GMS:Observations#Flow Observations|flow observations]] and is available for all MODFLOW versions that come with GMS except for [ ...ons in source/sink coverages. Each of the observations is assigned a [[GMS:Observations#Observation Weights|weight]] that is saved to the inverse input files.

Observations can be either point observations or flow observations. ==Point Observations==

...ion involves changing input parameters until the model results match field observations. SMS provides a suite of options for model calibration including calibrati