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All of the bodies of fresh water, salt water, ice, and snow that are found above the ground.
The loss of water from surface water reservoirs or groundwater aquifers at a rate greater than that of recharge.
areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. There are 12 ecoregions in Texas.
The continuous movement of water from the ocean to the atmosphere to the land and back to the ocean
characteristic of materials through which water does not easily pass, such as clay and granite
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.
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