AK WATER WELL DRILLER EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFED ANSWERS)
Q&A 2027 |INSTANT DOWNLOAD PDF
1. What is the primary purpose of a water well?
A. To collect surface runoff
B. To access groundwater for beneficial use
C. To increase soil moisture
D. To dispose of wastewater
Answer: B. To access groundwater for beneficial use
Rationale: A water well is constructed to reach and withdraw
groundwater from an aquifer or water-bearing formation.
2. What is an aquifer?
A. A layer that cannot transmit water
B. A surface drainage ditch
C. A geologic formation capable of storing and transmitting
usable groundwater
D. A drilling lubricant
Answer: C. A geologic formation capable of storing and
transmitting usable groundwater
Rationale: Aquifers contain interconnected pores or fractures
through which groundwater can move.
,3. Which formation generally has the greatest ability to
transmit groundwater?
A. Massive unfractured granite
B. Clean, well-sorted sand and gravel
C. Dense clay
D. Solid shale
Answer: B. Clean, well-sorted sand and gravel
Rationale: Large, interconnected pore spaces allow water to
move relatively easily through clean sand and gravel.
4. What does groundwater recharge mean?
A. Removing water from a well
B. Adding water to an aquifer
C. Disinfecting a well
D. Increasing pump pressure
Answer: B. Adding water to an aquifer
Rationale: Recharge occurs when water enters and replenishes
an aquifer, commonly from precipitation, snowmelt, or surface-
water infiltration.
5. What is the static water level?
A. Water level while a pump is operating
B. Water level before drilling begins
C. Water level in a well when it is not being pumped or recently
,disturbed
D. Water level inside the drilling rig
Answer: C. Water level in a well when it is not being pumped
or recently disturbed
Rationale: Static water level provides a baseline for evaluating
groundwater conditions.
6. What is drawdown?
A. The increase in water level during pumping
B. The lowering of water level caused by pumping
C. The depth of casing
D. The amount of drilling fluid used
Answer: B. The lowering of water level caused by pumping
Rationale: Pumping removes groundwater faster than it can
immediately replace itself near the well, lowering the water
level.
7. What is well yield?
A. The diameter of the casing
B. The amount of water a well can produce over a specified
period
C. The total depth of the borehole
D. The weight of drilling equipment
, Answer: B. The amount of water a well can produce over a
specified period
Rationale: Well yield is commonly expressed as gallons per
minute or another volume-per-time unit.
8. Why is well location important?
A. It affects only the appearance of the property
B. It can affect groundwater quality, accessibility, and potential
contamination
C. It determines the color of the casing
D. It eliminates the need for testing
Answer: B. It can affect groundwater quality, accessibility, and
potential contamination
Rationale: A well should be located to protect the groundwater
source and allow proper construction, maintenance, and
access.
9. What is the main purpose of well casing?
A. To increase water temperature
B. To stabilize the borehole and prevent unwanted material
from entering the well
C. To replace the pump
D. To chemically treat groundwater
AND CORRECT ANSWERS (VERIFED ANSWERS)
Q&A 2027 |INSTANT DOWNLOAD PDF
1. What is the primary purpose of a water well?
A. To collect surface runoff
B. To access groundwater for beneficial use
C. To increase soil moisture
D. To dispose of wastewater
Answer: B. To access groundwater for beneficial use
Rationale: A water well is constructed to reach and withdraw
groundwater from an aquifer or water-bearing formation.
2. What is an aquifer?
A. A layer that cannot transmit water
B. A surface drainage ditch
C. A geologic formation capable of storing and transmitting
usable groundwater
D. A drilling lubricant
Answer: C. A geologic formation capable of storing and
transmitting usable groundwater
Rationale: Aquifers contain interconnected pores or fractures
through which groundwater can move.
,3. Which formation generally has the greatest ability to
transmit groundwater?
A. Massive unfractured granite
B. Clean, well-sorted sand and gravel
C. Dense clay
D. Solid shale
Answer: B. Clean, well-sorted sand and gravel
Rationale: Large, interconnected pore spaces allow water to
move relatively easily through clean sand and gravel.
4. What does groundwater recharge mean?
A. Removing water from a well
B. Adding water to an aquifer
C. Disinfecting a well
D. Increasing pump pressure
Answer: B. Adding water to an aquifer
Rationale: Recharge occurs when water enters and replenishes
an aquifer, commonly from precipitation, snowmelt, or surface-
water infiltration.
5. What is the static water level?
A. Water level while a pump is operating
B. Water level before drilling begins
C. Water level in a well when it is not being pumped or recently
,disturbed
D. Water level inside the drilling rig
Answer: C. Water level in a well when it is not being pumped
or recently disturbed
Rationale: Static water level provides a baseline for evaluating
groundwater conditions.
6. What is drawdown?
A. The increase in water level during pumping
B. The lowering of water level caused by pumping
C. The depth of casing
D. The amount of drilling fluid used
Answer: B. The lowering of water level caused by pumping
Rationale: Pumping removes groundwater faster than it can
immediately replace itself near the well, lowering the water
level.
7. What is well yield?
A. The diameter of the casing
B. The amount of water a well can produce over a specified
period
C. The total depth of the borehole
D. The weight of drilling equipment
, Answer: B. The amount of water a well can produce over a
specified period
Rationale: Well yield is commonly expressed as gallons per
minute or another volume-per-time unit.
8. Why is well location important?
A. It affects only the appearance of the property
B. It can affect groundwater quality, accessibility, and potential
contamination
C. It determines the color of the casing
D. It eliminates the need for testing
Answer: B. It can affect groundwater quality, accessibility, and
potential contamination
Rationale: A well should be located to protect the groundwater
source and allow proper construction, maintenance, and
access.
9. What is the main purpose of well casing?
A. To increase water temperature
B. To stabilize the borehole and prevent unwanted material
from entering the well
C. To replace the pump
D. To chemically treat groundwater
