t (elapsed time since the
start of pumping):
delta t (time
(radial distance from pumped well):
**KEEP UNITS CONSISTENT**
A consultant is preparing
to conduct a pump test at a local well field. They have
results from a pump test conducted two decades earlier,
indicating a transmissivity of 1250 m2/d and a
storage coefficient of 1.9x10-4. The intention
of the upcoming pump test is to double check these estimates.
With a pumping rate of 2730 m3/d, what would be the
expected drawdown at a monitoring well 122 m away. The
test will run for 1 day, and monitoring will occur approximately
every 3 hours.
The results should look as
follows (with units of m-d):
What would be a common
error in this example?
- forgetting to
keep units consistent (i.e. all in days, hours or seconds)
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