AMWELLS > Modeling environment >

Model boundaries

<< Click to Display Table of Contents >>

Navigation:  Analytical modeling (AMWELLS) > Modeling environment >

AMWELLS > Modeling environment >

Model boundaries

Model size does not impact calculated drawdowns except in aquifers with linear boundaries and strip aquifers.

For the bounded aquifers, the boundaries types and locations are specified by the “Boundaries” tab in the “Model Dimensions” dialog window.


button in the Toolbar menu.


For areally heterogeneous aquifers, the boundary between heterogeneity zones is also specified in this tab.



Frame “Coordinates”

Text boxes «X1», «Y1», «X2», «Y2» – coordinates defining the two ends of a line boundary or the first boundary for a strip aquifer. The second boundary of a strip aquifer is automatically assigned at a distance that equals the specified width of the aquifer (text box “Width of strip aquifer”)

Text box “Width of strip aquifer”

Sets up the distance between the two boundaries of a strip aquifer. The second boundary will be included in simulations even if it is outside the model area

Button “Model”

Selecting this menu item calls back the AMWELLS model graphical interface window where boundary location can be modified by clicking the left mouse button (left end of the boundary) or the right mouse button (right end of the boundary).

Click Esc to exit boundary edit regime and return to the “Model dimensions” dialog window

Button “Adjust”

Extends the length of the boundaries to the model area limits

Graphical window to the right from “Model” and “Adjust” buttons

The graphical window shows schematic boundary locations within the model area.

Clicking anywhere within this window will move the model boundary, so it will coincide with the left or the right limits of the model area (a boundary between heterogeneity zones will be assigned through the model center, along either X-X, or Y-Y direction)

Frame “Boundaries: width, type and color”

Defines a boundary type and its width, specifies the color to display a boundary