GROUNDWATER FLOWS TO WELLS

Question 1

maximum rate of pumpage that can be allowed while ensuring that water-level declines are kept with acceptable limits.

Answer 1

Groundwater yield

Question 2

maximum pumping rate that can be supplied by a well without lowering the water level in the well below the pump intake

Answer 2

Well yield

Question 3

maximum rate of withdrawal that can be sustained by an aquifer without causing an unacceptable decline in the hydraulic head in the aquifer

Answer 3

Aquifer yield

Question 4

maximum rate of withdrawal that can be sustained by the complete hydrogeologic system in a groundwater basin without causing unacceptable declines in hydraulic head in the system or causing unacceptable changes to any other component of the hydrologic cycle in the basin.

Answer 4

Basin yield

Question 5

is the artificial application of water to soil or land to assist in the growth of crops and vegetation, typically to supplement insufficient rainfall and ensure optimal agricultural productivity.

Answer 5

Irrigation

Question 6

is the process of removing or lowering the water table in soil or construction areas through pumping or other techniques, typically to create a dry and stable environment for construction, mining, or excavation activities.

Answer 6

Dewatering

Question 7

a model refers to the process of defining and assigning specific values to the parameters within a mathematical or computational model.

Answer 7

Parameterizing

Question 8

who said that groundwater science is like trying to read a textbook with a hole punch…”

Answer 8

D. Irvine

Question 9

K and transmissivity properties can be determined from single well tests

Answer 9

At least one pumping well…

Question 10

To determine storage properties

Answer 10

At least one observation well

Question 11

Better estimates of storage and transmissivity

Boundaries

Anisotropy

Answer 11

Multiple observation wells

Question 12

-record the pump rate and know the location of the pumping
well, and observation wells

Answer 12

From the test

Question 13

Solved transient flow (accounting for storage) to a well in an infinitely extending aquifer

Answer 13

Theis Solution

Question 14

affects the slope of the time drawdown curve

Answer 14

Transmissivity

Question 15

Higher transmissivity,

Answer 15

lower slope

Question 16

Higher transmissivity requires a __________ to move the same Q

Answer 16

lower gradient

Question 17

affects the lag time for drawdown to commence

Answer 17

Storativity

Question 18

Higher storativity,

Answer 18

longer lag time

Question 19

means that more water is available in storage, which buffers drawdown (initially)

Answer 19

Higher storage

Question 20

What properties affect drawdown in an unconfined aquifer?

Answer 20

Storativity

Horizontal conductivity

Vertical conductivity

Specific yield

Question 21

three phases of unconfined drawdown

Answer 21

neuman solution

Question 22

drawdown is controlled by the specific yield of the aquifer called

Answer 22

the concept of delayed yield

Question 23

refers to the decline of water level of well due to pumping

Answer 23

draw down

Question 24

it refers to the vertical distance from the ground surface to the water level in a well, borehole, or piezometer

Answer 24

Depth to Water

Question 25

true of false: drawdown is always reported as a positive number

Answer 25

true

Question 26

is a property of an aquifer that describes its ability to transmit water

Answer 26

Hydraulic conductivity (k)

Question 27

Generally performed in piezometers

Can’t perform pump tests

Have a significant response to a small stress

Answer 27

slug test

Question 28

a confined aquifer is bounded on one side by a straight line impermeable boundary

Answer 28

bounded aquifer