Download WEAP User Guide

WEAP User Guide
On the menu, choose Advanced, MODFLOW Link. Check the "Link to MODFLOW" check box,
and then type in or browse for the MODFLOW Name filename. Typically the "Name" file has an
extension of .NAM or .MFN After WEAP loads the MODFLOW name file and its packages, it
will display information about the MODFLOW model.
Make sure to check the box at the bottom ("Save every MODFLOW input and output file
created") so that the results will be available to view in WEAP. (Because a complete set of new
input files are created and kept for each timestep and scenario, you will be able to run them
yourself in MODFLOW outside of WEAP, if you want to examine the results in more detail, or to
make slight changes to the inputs. Note that any changes you make directly to these temporary
input files will be lost the next time WEAP does its calculations, so you are advised to save them
in another directory if you want to preserve them. The temporary filenames all start with "!MF!"
to distinguish them from other files.)
The name file lists the other files that contain data for the various aspects of the MODFLOW
model, such as recharge, pumping or river interactions. These files are called "packages." Use the
"View/Edit Packages" button to view or edit the text file packages.
Note that initially WEAP does not know how to link the MODFLOW model to the WEAP model,
as can be seen in the screen above, e.g., "WARNING: Active cells linked to WEAP groundwater
node: None are linked."
If the MODFLOW model includes confined layers, you can group one or more layers into distinct
aquifers for reporting purposes. For example, suppose that layer 2 in a 3-layer model has a
confining bed below it. In this case, you would define two aquifers in WEAP: aquifer 1
containing layers 1 and 2, and aquifer 2 containing layer 3. Click the "Define Aquifers" button
(see above) to specify how many aquifers exist and which layers correspond to which aquifers.
This option is not available if the model has only one layer.
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