Work through the segments/exercises linearly.
SEGMENT 1 getting started
The
best way to learn about MODFLOW input is to start with a simple problem. Click
here for a description of the flow system that we will work with.
First we need to tell MODFLOW what modules to use and where to find the input
for each module. We do that by setting up a name file. Click here to view the name file setup for our example problem.
SEGMENT 2 useful utilities
EXERCISE
1 - Starting MODFLOW
-
EXERCISE 1 Setup
- Setup
directories and create a batch file to execute MODFLOW
exercise #1
EXERCISE 2 - BUILD SIMPLISTIC MODFLOW files
- EXERCISE
2a
- Build a MODFLOW DISCRETIZATION (DIS) file
exercise #2a
- EXERCISE 2b
- Build a MODFLOW BASIC (BAS) file
exercise #2b
- EXERCISE 2c
- Build a MODFLOW OUTPUT CONTROL (OC) file
exercise #2c
- EXERCISE 2d
- Build a MODFLOW LAYER PROPERTY FLOW (LPF) file
exercise #2d
{alternative BLOCK
CENTERED FLOW (BCF) file alternate exercise #2d
if the alternative bcf package is used you will need to change the nam
file appropriately}
- EXERCISE 2e
- Build a MODFLOW STRONGLY IMPLICIT PROCEDURE (SIP) file
exercise #2e
- EXERCISE 2f
- Simulate Steady State Conditions with MODFLOW
exercise #2f
- EXERCISE 2g
- Continue to Simulate Steady State Conditions with MODFLOW
exercise #2g
EXERCISE 2h
- Build a MODFLOW RECHARGE (RCH) file without parameters
exercise #2h
EXERCISE 2i
- Use Parameters to Build a MODFLOW RECHARGE (RCH) file
exercise #2i
We cannot
discuss all of the possible ways in which MODFLOW might be manipulated to represent
geohydrologic conditions In this course. We will look at some of them. However,
if you strive to understand the concepts, then you can learn as you work in the
future. Before going on to more complex model setups, including using a GUI to
take the tedium out of these exercises, let us look at some basic tools for post-processing
MODFLOW.
SEGMENT 3 Post-Processing
- EXERCISE 3a
- View Heads Calculated by MODFLOW
exercise #3a
- EXERCISE 3b
- View Zone Budgets Calculated by MODFLOW
exercise #3b
SEGMENT
4 Improving the model representation of the field using HEAD DEPENDENT
FLUX boundaries rather than constant head boundaries
EXERCISE 4a
- Build a MODFLOW GENERAL HEAD BOUNDARY (GHB) file
exercise #4a
- EXERCISE 4b
- Build a MODFLOW RIVER (RIV) file
exercise #4b
SEGMENT 5 Alternative
HEAD DEPENDENT FLUX boundaries
SEGMENT 6
DANGER! avoid the temptation to use FIXED FLOW boundaries
SEGMENT 7 VERTICAL
CONDUCTANCE ... a bit of a challenge
SEGMENT 8
MODFLOW IDIOSYNCRASIES