Podcast
Questions and Answers
What is the main difference between drilled wells and dug wells?
What is the main difference between drilled wells and dug wells?
- Dug wells are more prone to contamination from pesticides and fertilizers.
- Dug wells are shallower and penetrate unconsolidated materials.
- Drilled wells are lined with wood, stone, or metal cribbing.
- Drilled wells can be more than 1000 feet deep and penetrate unconsolidated materials. (correct)
What is the primary risk associated with drilled wells located within pits?
What is the primary risk associated with drilled wells located within pits?
- High levels of carbon dioxide and low oxygen in the pits. (correct)
- Infestation of pests and flooding of pits.
- Excessive depth of the drilled well.
- Contamination from pesticides and fertilizers.
Why does BC Groundwater Regulation require drinking water wells to be a minimum of 30 meters or 100 feet from potential contaminant sources?
Why does BC Groundwater Regulation require drinking water wells to be a minimum of 30 meters or 100 feet from potential contaminant sources?
- To protect the wellhead from freezing in cold temperatures.
- To prevent the entry of pests and bacteria into the wells.
- To avoid the need for excavation lined with wood, stone, or metal cribbing.
- To minimize the risk of contamination from pesticides, vehicles, and septic tanks. (correct)
What is the term for the local gradient in the water table toward a well that is being pumped?
What is the term for the local gradient in the water table toward a well that is being pumped?
What are some negative effects of groundwater depletion?
What are some negative effects of groundwater depletion?
In which type of aquifer does the water table dip down to form a cone of depression when water is pumped through a well?
In which type of aquifer does the water table dip down to form a cone of depression when water is pumped through a well?
What depends on factors such as material and thickness of the aquifer, amount of water in storage, and pumping rate?
What depends on factors such as material and thickness of the aquifer, amount of water in storage, and pumping rate?
What happens when groundwater pumping exceeds the recharge rate?
What happens when groundwater pumping exceeds the recharge rate?
What happens when a well is developed near a contaminated area and pumped at a sufficient rate to create a cone of depression?
What happens when a well is developed near a contaminated area and pumped at a sufficient rate to create a cone of depression?
What is the process called when wells are drilled into aquifers to recover groundwater?
What is the process called when wells are drilled into aquifers to recover groundwater?
What is the result of over-pumping from a groundwater aquifer over the long-term?
What is the result of over-pumping from a groundwater aquifer over the long-term?
What may take hours, days, or even years for surface infiltration to reach an aquifer as deep as 400 feet?
What may take hours, days, or even years for surface infiltration to reach an aquifer as deep as 400 feet?
What is formed where the water table sinks at a specific point due to heavy pumping?
What is formed where the water table sinks at a specific point due to heavy pumping?
