Relatively large channel of water
Relatively large channel of water
Areas of the river system that are farthest away from the mouth of the river
Erosion of a valley due to high gradient streams
The area that is flat in a valley
Volume of water passing a point along the river in a unit of time
Stream with a channel that curves or loops back and forth in a wide floodplain
Ridges in a meander bend
Porous underground sediments and rocks
Curve in a meander stream
a group of streams that contribute water to another stream.
an outflowing branch of a river, such as what occurs characteristically on a delta.
the area from which all of the rain that falls eventually flows to the same final destination, usually the ocean.
a major river, fed by a number of fairly large tributaries; the main stream in a river system.
the boundary between adjacent drainage basins.
Water Cycle (or hydrologic cycle)
The constant circulation of water from the sea, through the atmosphere, to the land, and its eventual return to the atmosphere by way of transpiration and evaporation from the land and evaporation from the sea.
A system in which material moves from place to place but is not gained or lost from the system.
The change of state of matter from a liquid to a gas. Heat is absorbed.
Water that falls to the surface from the atmosphere as rain, snow, hail, or sleet.
The part of the water that travels over the ground surface without passing beneath the surface.
The part of the subsurface water that is in the zone of saturation, including underground streams.
The process by which water absorbed by plants, usually through the roots, is emitted into the atmosphere from the plant surface in the form of water vapor.
A place in the Earth system that holds water.
The movement of water from one reservoir to another.
Zone of Aeration
The zone right below the surface where most of the porous space is filled with air, but there is some water. The majority is air.
Zone of Saturation
An area beneath the Earth's surface which extends downwards until all of the open spaces in the sediment and rocks are completely filled with water.
Is when water will move downwards until it fills all of the available pore space and cracks in the soil and rocks.
The force of attractions between water and a solid surface.
The upper surface of the zone of saturation.
A layer of rock that is sufficiently porous to absorb and transmit water in quantities that can be economically removed.
A permeable layer between two impermeable layers
A well where the hydrostatic pressure within the aquifer will force water up into a well without the need for pumping. Water will spill out by itself
The constant changing of water, from solid, to liquid, to gas. The cycle in which water travels through on Earth
a measure of the percentage of pores (open spaces) in a material.
a measure of how easy it is to force water to flow through a porous material.
any body of sediment or rock that has sufficient size and sufficiently high porosity and permeability to provide an adequate supply of water from wells.
the zone, beneath the water table where all of the pores are filled with water.
the surface between the saturated zone and the unsaturated zone (zone of aeration).
loss of water from a land area through transpiration of plants and evaporation from the soil and surface water.
an aquifer that has a free connection upward to the surface.
addition of new water to an aquifer by downward flow of surface water.
a body of rock that will absorb water slowly, but will not transmit it fast enough to supply a well.
a system of large surface pipes and channels used to transport water.
the process of removing dissolved salts from sea water in order to make it potable.