CE En 547 - Exam #1 KEY

Fall Semester 2018

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1. (1 pt each) True or False:

a. T F  (modflow) Each package in MODFLOW is subdivided into a series of smaller routines called processes.

b. T F  (head-darcy) Effective porosity is typically greater than porosity.

c. T F  (modflow) The drain, stream-aquifer interaction, and general head packages all require the input of a conductance term for the cells where the source/sink is applied.

d. T F  (modflow) The CHD package is used to simulate sheetpiles, slurry trenches, and low permeability faults.

e. T F  (gw-concepts) Parsimony is defined as finding a balance between model complexity and simplicity.

f. T F  (modflow) Springs are typically simulated in MODFLOW using the Drain package.

g. T F  (gw-concepts) The groundwater table corresponds to the points where the total head equals the elevation head.

h. T F  (gms) The units for length, time, mass, etc. that you specify when you begin to build a GMS project are required so that GMS can convert all of your input data to a common system before you save your files and run MODFLOW.

i. T F  (head-darcy) Water will always flow from a high elevation to a low elevation.

j. T F  (concmod) Most aquifer systems are in state of equilibrium best represented by a steady state model.