The cultivation of aquatic produce such as aquatic plant, fish, and other aquatic animal
An underground layer of water-bearing porous stone, earth, or gravel
An area of land that drain into a river or ocean
A public notice issued by a provincial or local health authority informing the users of a public water system that their drinking water is, or potentially is, unsafe microbiologically and that it should be boiled before use. To kill water pathogens, water should be brought to a rolling boil for one minute, then allowed to cool (protected from further contamination) before consumption.
A watershed in which water does not drain into an ocean or another body of water, and can escape only by evaporating or seeping into the Earth
Structure placed across a flowing body of water to stop the flow
A triangular area of land at the mouth of a river where it empties into a body of water
To flow out of a body of water or urban infrastructure
To alter the natural flow of a body of water
Lower down, in relation to the direction a river or stream flows
To make a channel deeper or wider using a dredge
A prolonged period of below average rainfall, longer and more severe than a dry_spell
1. A system formed by an ecological community and its environment that function as a unit.
2. The interconnectedness of organisms (plants, animals, microbes) with each other and their environment.
Sewage water that has been (partially) treated, and is released into a natural body of water; a flow of any liquid waste
(Of a lake or basin) Internally drained; having no outlet
The act of wearing away or being eroded, as by a glacier on rock or the sea on a cliff face
1. coastal water body where ocean tide and river water merge.
2. An ocean inlet also fed by fresh river water.
The process of a liquid converting to a gaseous state
An overflow of water from a lake or other body_of_water due to excessive rainfall or other input of water
1. The movement of a fluid
2. The amount of a fluid that moves or the rate of fluid movement
water with a very low content of dissolved salt, as opposed to brackish water or salt_water
A large body of ice, which flows under its own mass, usually downhill
water that exists beneath the Earth's surface in underground stream and aquifer
The source, and the initial part, of a stream
A compound consisting only of carbon and hydrogen atoms
Electricity produced from the energy of moving water
Structure placed across a flowing body of water to stop the flow that contains hydroelectric generators
The science of the properties, distribution, and effect of water on a planet's surface, in the soil and underlying rock, and in the atmosphere
Also known as the water cycle, the hydrologic cycle describes the continuous movement of water on, above and below the surface of the Earth
1. A network of interconnected glacier or ice streams having a common source
2. A large expanse of floating ice (several kilometres long)
The act or process of irrigating, or the state of being irrigated; especially, the operation of causing water to flow over lands, for nourishing plants
Of, or pertaining to, the sea (marine biology, marine insurance)
Water from melting ice or snow
An area of land that drains into an ocean
A watershed in which water drains into an ocean or another body of water
Land with peat soil, such as an active or former bog
A place where water is collected and kept for use when wanted, as to supply a fountain, a canal, or a city by means of aqueduct.
An extent of land where water from rain or snow melt drains downhill into a river or series of rivers.
That portion of precipitation or irrigation on an area which does not infiltrate or evaporate, but instead is discharged from the area.
A marsh of saline water, found in the intertidal zone between land and sea, characterized by halophytic plants such as grass and sedge adapted to periodic flooding with salt water
The saltwater of a sea or ocean
A collection of small particle, particularly dirt, that precipitate from a river or other body_of_water
The process by which a liquid leaks through a porous substance; the process of seep
1. A muddy or marshy area
2. A type of swamp or shallow lake system, typically formed as or by the backwater of a larger waterway, similar to a bayou with trees
3. A secondary channel of a river delta, usually flushed by the tide
An accumulation of pack snow, usually the seasonal amount
The act of caring for or improving with time
Water that is not absorbed into soil and rapidly flows downstream, increasing the level of waterways
Water running above ground, on the Earth's surface.
Water collecting on the ground or in a stream, river, lake, sea or ocean, as opposed to groundwater
The waste that remains after the mineral have been extracted from an ore-by-ore_dressing; slime
The sum of all water, below ground and on the surface, running in a river, stream or watershed
A river that flows into a larger river or other body of water
In a direction against the flow of a current or stream; upriver
1. The process of the formation and growth of cities
2. The change in a country or region when its population migrate from rural to urban areas
Any water that has been used by some human, domestic or industrial activity and, because of that, now contains waste products
See Hydrological cycle
A region of land within which water flows down into a specified body, such as a river, lake, sea, or ocean; also called a drainage basin or catchment area
Land that is covered mostly with water, with marsh and soggy areas