What 2 conditions must exist for an artesian well to form?

What 2 conditions must exist for an artesian well to form?

The geologic conditions necessary for an artesian well are an inclined aquifer sandwiched between impervious rock layers above and below that trap water in it. Water enters the exposed edge of the aquifer at a high elevation and percolates downward through interconnected pore spaces.

What are some sources of groundwater contamination quizlet?

What are some sources of groundwater contamination? Spills, leaks, seepage or application. Liquid hazardous substances are spilled and soak down through the soil or rock into the groundwater.

What forms whenever the ground surface and water table intersect?

1. Figure 12.9 and 12.12: A spring is a natural flow of water that occurs when the groundwater table intersects the land surface. The water emerges at the ground surface.

Does groundwater move faster through sediment with large pore spaces?

Distribution and Movement of Water Underground Groundwater moves faster through sediment with large pore spaces than through sediment with small pore spaces.

What are three sources of groundwater contamination?

Potential Sources of Groundwater Contamination

• Storage Tanks. May contain gasoline, oil, chemicals, or other types of liquids and they can either be above or below ground.
• Septic Systems.
• Uncontrolled Hazardous Waste.
• Landfills.
• Chemicals and Road Salts.
• Atmospheric Contaminants.

What is the largest source of groundwater contamination?

Major Sources of Groundwater Contamination

• Agricultural Chemicals. Agricultural production has been scaled up in most developed nations.
• Septic Waste.
• Landfills.
• Hazardous Waste Sites.
• Storage Tanks.
• Atmospheric Pollutants.
• Underground Pipes.
• Road Salts.

What is water soaking into the ground called?

The process of water soaking into the ground to become groundwater is known as groundwater recharge. The area on the surface where water soaks in is call the recharge area.

Is gravel more porous than sand?

More specifically, porosity of a rock is a measure of its ability to hold a fluid. Mathematically, it is the open space in a rock divided by the total rock volume (solid and space). Gravel and sand are both porous and permeable, making them good aquifer materials. Gravel has the highest permeability.

What are the two zones of groundwater?

Groundwater is found in two zones. The unsaturated zone, immediately below the land surface, contains water and air in the open spaces, or pores. The saturated zone, a zone in which all the pores and rock fractures are filled with water, underlies the unsaturated zone.

What are some of the threats to groundwater?

What are groundwater threats? Hazardous chemicals are often stored in containers on land or in underground storage tanks. Leaks from these containers and tanks can contaminate soil and pollute groundwater. Common pollutants of soil and groundwater include gasoline and diesel fuel from gas stations, as well as solvents, heavy metals and pesticides.

What are the threats to the water supply?

Businesses today face numerous threats to maintaining reliable, sustainable and affordable water supplies to support operations.

What are the most common sources of groundwater contamination?

Found in low concentrations in rocks, coal, and petroleum and enters the groundwater and surface water when dissolved by acidic waters. May enter the environment from industrial discharge, mining waste, metal plating, water pipes, batteries, paints and pigments, plastic stabilizers, and landfill leachate.

How to mitigate water supply risks in your business?

One approach to mitigate your water supply risks is to perform a source water vulner­a­bil­ity assessment, or a detailed look at your business’ water source (s) and its related risks. Ask yourself targeted questions about the water sources according to major risk categories and how they could affect your bottom line.