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Groundwater Features © Copyright 2007. M. J. Krech. What is a Water Table?
FOCUS QUESTION: What is a Water Table?
First you need to remember that solid rock (the bedrock or parent rock of all soil) is not solid! It contains pore spaces. First Things First:
air spaces These air spaces can be filled with air or water.
Sedimentary rocks, like limestone, have pore spaces that are large enough for water to pass through. Permeable means…
Metamorphic rocks, like shale, have very tiny pore spaces that don’t let water pass through. Impermeable means…
So what is Permeability? Permeability is the ability of soil or rock to allow water to pass through.
The Water Cycle tells us that water seeps into the ground by percolation.
is where the pore spaces are filled with water. The Zone of Saturation
is where the pore spaces are filled with air and some water. The Zone of Aeration
Groundwater occupies the Zone of Saturation. Soil Horizons Notice the Soil Horizons are very close to the surface. What is below the Soil Horizons?
The Water Table separates the Zone of Saturation from the Zone of Aeration.
The Water Table is the TOP of the Zone of Saturation. It tells us how deep we have to drill before we find water.
… means we can’t reach the water and the well has run dry. A low Water Table …
NOT …means the well is NOT dry, but is pumping plenty of water. A high Water Table … We don’t have to restrict the use of water now.
Drilling for Water $2,000 to $10,000 Drilling for water can cost from $2,000 to $10,000 -- depending on how deep the water table is!
BONUSQUESTIONS: 1. What is a Water Table? 2. Why is it important to know where the Water Table is? © Copyright 2007. M. J. Krech.
Water Cycle Water Budget
The Water Cycle Water is recycled through the water cycle.
Chapter 9: Water Moving Underground More than 97 percent of all water on Earth is in the ocean as salt water. Glaciers – of the little amount of fresh.
From the ground! Where’s the water coming from??
Who am I? I am a compound found naturally in Earth I control the Earth’s climate I am necessary for all life I am the universal solvent I am continuously.
Water Beneath the Surface
Groundwater Makes up 23% of Earth’s freshwater. 12% Shallow (we can reach) 11% Deep (out of our reach)
- Water beneath the Earth’s surface in sediment and rock formations.
Water Underground. How Water Moves Underground Water underground trickles down between particles of soil and through cracks and spaces in layers of rock.
What happens to rain or snow that falls on the ground?
Water. The World’s Water Approx. 97% of the Earth’s water is salt water Approx. 3% is fresh water. – Of this 3%, most is frozen in the ice caps and.
Groundwater What is Groundwater???? The water that has seeped into the soil and rock. The underground area is broken down into 4 areas… 1) Zone of Aeration.
Chapter 2 Fresh Water Section 5 Water Underground
Water underground MS. COULTER. How water moves underground Water underground trickles down between particles of soil and through cracks and spaces in.
Groundwater. What do you remember about how we get water from underground? Dig below the water table Dig below the water table Aquifer Aquifer Springs.
Last week we discussed how run-off can occur two different ways: Surface Run-off – water flowing on the surface to streams, rivers and oceans. Subsurface.
Ground Water Write everything in PURPLE!.
Ground Water Notes. I like science. Water Table The spaces between the grains are filled with air. The spaces between the grains are filled with water.
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