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1. (1 pt each) True or False:
a. T F (gw-concepts) A post-audit is when you adjust your model inputs until the model outputs match your field observed values (heads and flows).
b. T F (modpath) When performing a particle tracking analysis with MODPATH, the porosity values assigned to cells should correspond to effective porosity.
c. T F (modflow) The active/inactive region in MODFLOW is controlled through the IBOUND array.
d. T F (calibration) The mean absolute error is typically smaller than the mean error.
e. T F (transient) Specific yield is generally smaller than specific storage
f. T F (transient) MODFLOW stress periods are subdivided into time steps, but it is possible to have only one time step per stress period.
g. T F (calibration) When establishing an observed flow based on field measurements for a section of a river, the observed flowrate should be entered as positive value if it is a gaining river.
h. T F (head-darcy) Seepage velocity is greater than Darcian velocity.
i. T F (head-darcy) When flowing perpendicular to the layering, the overall flow rate will be controlled by the layer with the lowest value of hydraulic conductivity.
j. T F (gms) The Grid Frame tool in GMS should only be used when you are using refine points to control the distribution of row and column widths in your model grid.
k. T F (transient) The storage coefficient used in transient models increases as the stiffness of the soil increases.
l. T F (stochastic) Hydraulic conductivity is typically log-normally distributed.
m. T F (modpath) When particle tracking with MODPATH, the velocity of the particle is proportional to the effective porosity.
n. T F (modflow) A losing river results in an elevated water table (mounding) underneath the river when simulated with the MODFLOW River package.
o. T F (sustain) The closer a new set of wells is located to an aquifer's discharge zones, the longer it will take for the system to reach a new state of equilibrium.