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Groundwater and Catastrophic Events


water that fills the cracks and spaces in underground soil and rock layers


the land area that supplies water to a river system

surface water

All of the bodies of fresh water, salt water, ice, and snow that are found above the ground.


a body of rock or sediment that stores groundwater and allows the flow of groundwater

run off

water that flows over the ground surface rather than soaking into the ground


the process in which water pools in large bodies (like oceans, seas and lakes)


The breaking down of rocks and other materials on the Earth's surface.


condition in which the earth's surface is worn away by the action of water and wind


process in which sediment is laid down in new locations


to use something again


the sudden movement of rock and soil down a slope


The act of getting rid of waste


the preservation and careful management of the environment and of natural resources

land subsidence

as water is withdrawn from an aquifer land and gravel layers collapse


to pollute


The loss of water from surface water reservoirs or groundwater aquifers at a rate greater than that of recharge.

Texas Ecoregions

areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. There are 12 ecoregions in Texas.


an effect or result

water cycle

The continuous movement of water from the ocean to the atmosphere to the land and back to the ocean

recharge zone

An area in which water travels downward to become part of an aquifer.


penetrable; porous; allowing liquids to pass through


characteristic of materials through which water does not easily pass, such as clay and granite

catastrophic event

any natural event that occurs on earth and causes significant changes or damage to the earth's surface. May include storms, earthquakes, and volcanic eruptions.


a change to the environment that is harmful to living things;has a negative efect


a deep hole or shaft dug or drilled into the earth to obtain water or oil or gas.


the percentage of the total volume of a rock or soil that consists of open spaces

water table

underground surface below which the ground is saturated with water


suitable or right for the purpose


unsuitable or improper for a specific purpose or use

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