SettingsWater streams
Aggradation
Aggradation is the term used in geology for the increase in land elevation due to the deposition of sediment.
Aggradation is the term used in geology for the increase in land elevation due to the deposition of sediment.
Alluvial river
An alluvial river is a lowland river in which the bed and banks are made up of mobile sediment and/or soil.
An alluvial river is a lowland river in which the bed and banks are made up of mobile sediment and/or soil.
Anabranch
An anabranch is a section of a river or stream that diverts from the main channel or stem of the watercourse and rejoins the main stem downstream.
An anabranch is a section of a river or stream that diverts from the main channel or stem of the watercourse and rejoins the main stem downstream.
Arroyo (creek)
An arroyo, a Spanish word translated as brook, and also called a wash is usually a dry creek or stream bed—gulch that temporarily or seasonally fills and flows after sufficient rain.
An arroyo, a Spanish word translated as brook, and also called a wash is usually a dry creek or stream bed—gulch that temporarily or seasonally fills and flows after sufficient rain.
Avulsion (river)
In sedimentary geology and fluvial geomorphology, avulsion is the rapid abandonment of a river channel and the formation of a new river channel.
In sedimentary geology and fluvial geomorphology, avulsion is the rapid abandonment of a river channel and the formation of a new river channel.
Bar (river morphology)
A bar in a river is a depressed region of sediment (such as sand or gravel) that has been deposited by the flow.
A bar in a river is a depressed region of sediment (such as sand or gravel) that has been deposited by the flow.
Braid bar
Braid Bars, or mid-channel bars, are landforms in a river that begin to form when the discharge is low and the river is forced to take the route of less resistance by means of flowing in locatio...
Braid Bars, or mid-channel bars, are landforms in a river that begin to form when the discharge is low and the river is forced to take the route of less resistance by means of flowing in locatio...
Braided river
A braided river is one of a number of channel types and has a channel that consists of a network of small channels separated by small and often temporary islands called braid bars or, in British...
A braided river is one of a number of channel types and has a channel that consists of a network of small channels separated by small and often temporary islands called braid bars or, in British...
Burn (topography)
In Scotland, North East England and some parts of Ireland and New Zealand, burn is a name for watercourses from large streams to small rivers.
In Scotland, North East England and some parts of Ireland and New Zealand, burn is a name for watercourses from large streams to small rivers.
Channel (geography)
In physical geography, a channel is the physical confine of a river, slough or ocean strait consisting of a bed and banks.
In physical geography, a channel is the physical confine of a river, slough or ocean strait consisting of a bed and banks.
Channel types
A wide variety of river and stream channel types exist in limnology.
A wide variety of river and stream channel types exist in limnology.
Convergent flow
Convergent flow is the movement of ground water to a common area.
Convergent flow is the movement of ground water to a common area.
Creek (tidal)
A tidal creek or tidal channel is the portion of a stream that is affected by ebb and flow of ocean tides, in the case that the subject stream discharges to an ocean, sea or strait.
A tidal creek or tidal channel is the portion of a stream that is affected by ebb and flow of ocean tides, in the case that the subject stream discharges to an ocean, sea or strait.
Current (stream)
A current, in a river or stream, is the flow of water influenced by gravity as the water moves downhill to reduce its potential energy.
A current, in a river or stream, is the flow of water influenced by gravity as the water moves downhill to reduce its potential energy.
Daylighting (streams)
In urban design and urban planning, daylighting is the redirection of a stream into an above-ground channel.
In urban design and urban planning, daylighting is the redirection of a stream into an above-ground channel.
Degradation (geology)
In geology, degradation refers to the lowering of a fluvial surface, such as a stream bed or floodplain, through erosional processes.
In geology, degradation refers to the lowering of a fluvial surface, such as a stream bed or floodplain, through erosional processes.
Drainage basin
A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another ...
A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another ...
Drainage divide
A drainage divide, water divide, divide or watershed is the line separating neighbouring drainage basins.
A drainage divide, water divide, divide or watershed is the line separating neighbouring drainage basins.
Drainage system (geomorphology)
In geomorphology, a drainage system is the pattern formed by the streams, rivers, and lakes in a particular drainage basin.
In geomorphology, a drainage system is the pattern formed by the streams, rivers, and lakes in a particular drainage basin.
Ford (crossing)
A ford is a shallow place with good footing where a river or stream may be crossed by wading or in a vehicle.
A ford is a shallow place with good footing where a river or stream may be crossed by wading or in a vehicle.
French drain
A French drain, blind drain, rubble drain, rock drain, drain tile, perimeter drain, land drain or French ditch is a trench covered with gravel or rock t...
A French drain, blind drain, rubble drain, rock drain, drain tile, perimeter drain, land drain or French ditch is a trench covered with gravel or rock t...
Gill (stream)
Ghyll or Gill is used for a stream or narrow valley in the North of England and other parts of the United Kingdom.
Ghyll or Gill is used for a stream or narrow valley in the North of England and other parts of the United Kingdom.
Groundwater flow
Groundwater flow is defined as the "...part of streamflow that has infiltrated the ground, has entered the phreatic zone, and has been discharged into a stream channel, via springs or seepage water".
Groundwater flow is defined as the "...part of streamflow that has infiltrated the ground, has entered the phreatic zone, and has been discharged into a stream channel, via springs or seepage water".
Gypsey (spring)
A Gypsey is a name given to intermittent springs and streams in the Yorkshire Wolds.
A Gypsey is a name given to intermittent springs and streams in the Yorkshire Wolds.
Hack's law
Hack's law is an empirical relationship between the length of streams and the area of their basins.
Hack's law is an empirical relationship between the length of streams and the area of their basins.
Hyporheic zone
The hyporheic zone is a region beneath and lateral to a stream bed, where there is mixing of shallow groundwater and surface water.
The hyporheic zone is a region beneath and lateral to a stream bed, where there is mixing of shallow groundwater and surface water.
Lotic ecosystem
A lotic ecosystem is the ecosystem of a river, stream or spring.
A lotic ecosystem is the ecosystem of a river, stream or spring.
Main stem
In rivers and hydrology, the main stem is defined as the principal channel within a given drainage basin, into which all of the tributary streams in a drainage basin flow.
In rivers and hydrology, the main stem is defined as the principal channel within a given drainage basin, into which all of the tributary streams in a drainage basin flow.
Misfit stream
A misfit stream (or underfit stream) is a stream that is far too small to have eroded the valley which the stream occupies.
A misfit stream (or underfit stream) is a stream that is far too small to have eroded the valley which the stream occupies.
Mouth (water stream)
Mouth is a part of a stream where it pours into another stream, river, lake, reservoir, sea, or ocean.
Mouth is a part of a stream where it pours into another stream, river, lake, reservoir, sea, or ocean.
Mouth bar
A mouth bar is a bar in a river that is typically created in the middle of a channel in a river delta.
A mouth bar is a bar in a river that is typically created in the middle of a channel in a river delta.
Playfair's Law
In estimating erosion, Playfair's Law is an empirical relationship that relates the size of a stream to the valley it runs through.
In estimating erosion, Playfair's Law is an empirical relationship that relates the size of a stream to the valley it runs through.
Plunge pool
A plunge pool (or plunge basin or waterfall lake) can be a natural hydrologic fluvial landform feature or a constructed recreational garden feature.
A plunge pool (or plunge basin or waterfall lake) can be a natural hydrologic fluvial landform feature or a constructed recreational garden feature.
Rapid
A rapid is a section of a river where the river bed has a relatively steep gradient causing an increase in water velocity and turbulence.
A rapid is a section of a river where the river bed has a relatively steep gradient causing an increase in water velocity and turbulence.
Reach (geography)
A reach in geography can mean several things.
A reach in geography can mean several things.
Relief ratio
The relief ratio is a number calculated to describe the Grade (slope) of a river or stream.
The relief ratio is a number calculated to describe the Grade (slope) of a river or stream.
Rheophile
A rheophile is an organism that prefers to live in fast moving water.
A rheophile is an organism that prefers to live in fast moving water.
Riffle
A Riffle is a short, relatively shallow and coarse-bedded length of stream over which the stream flows at lower velocity and higher turbulence than it normally does in comparison to a pool.
A Riffle is a short, relatively shallow and coarse-bedded length of stream over which the stream flows at lower velocity and higher turbulence than it normally does in comparison to a pool.
Riffle-pool sequence
In a flowing stream, a riffle-pool sequence (also known as a pool-riffle sequence) develops as a stream's hydrological flow structure alternates from areas of relatively shallow to deeper water.
In a flowing stream, a riffle-pool sequence (also known as a pool-riffle sequence) develops as a stream's hydrological flow structure alternates from areas of relatively shallow to deeper water.
Riparian zone restoration
Riparian Zone Restoration is the ecological restoration of Riparian zone habitats of streams, rivers, springs, lakes, floodplains, and other hydrologic ecologies.
Riparian Zone Restoration is the ecological restoration of Riparian zone habitats of streams, rivers, springs, lakes, floodplains, and other hydrologic ecologies.
River
rivers are highly unnatural and can kill people at will by farting watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river.
rivers are highly unnatural and can kill people at will by farting watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river.
River bifurcation
River bifurcation (from Latin furca, fork) occurs when a river flowing in a single stream separates into two or more separate streams (called distributaries) which continue downstream.
River bifurcation (from Latin furca, fork) occurs when a river flowing in a single stream separates into two or more separate streams (called distributaries) which continue downstream.
River delta
A delta is a landform that is formed at the mouth of a river, where that river flows into an ocean, sea, estuary, lake, or reservoir.
A delta is a landform that is formed at the mouth of a river, where that river flows into an ocean, sea, estuary, lake, or reservoir.
River ecosystem
River ecosystems are prime examples of lotic ecosystems.
River ecosystems are prime examples of lotic ecosystems.
River morphology
The terms river morphology and its synonym fluvial geomorphology are used to describe the shapes of river channels and how they change over time.
The terms river morphology and its synonym fluvial geomorphology are used to describe the shapes of river channels and how they change over time.
River mouth
Mouth is a part of a stream where it flows into another stream, river, lake, reservoir, sea, or ocean.
Mouth is a part of a stream where it flows into another stream, river, lake, reservoir, sea, or ocean.
River source
The source or headwaters of a river or stream is the furthest place in that river or stream from its estuary or confluence with another river, as measured along the course of the river.
The source or headwaters of a river or stream is the furthest place in that river or stream from its estuary or confluence with another river, as measured along the course of the river.
Rythe
A Rythe is a small creek or inlet from a salt water harbour.
A Rythe is a small creek or inlet from a salt water harbour.
Source (river or stream)
The source or headwaters of a river or stream is the place from which the water in the river or stream originates.
The source or headwaters of a river or stream is the place from which the water in the river or stream originates.
Stream bed
A stream bed is the channel bottom of a stream, river or creek; the physical confine of the normal water flow.
A stream bed is the channel bottom of a stream, river or creek; the physical confine of the normal water flow.
Stream channel
Stream channel is the physical confine of a stream (river) consisting of a bed and stream banks.
Stream channel is the physical confine of a stream (river) consisting of a bed and stream banks.
Stream gradient
Stream gradient is the grade (slope) measured by the ratio of drop in a stream per unit distance, usually expressed as feet per mile or metres per kilometre.
Stream gradient is the grade (slope) measured by the ratio of drop in a stream per unit distance, usually expressed as feet per mile or metres per kilometre.
Stream pool
A stream pool, in hydrology, is a stretch of a river or stream in which the water depth is above average and the water velocity is quite below average.
A stream pool, in hydrology, is a stretch of a river or stream in which the water depth is above average and the water velocity is quite below average.
Stream restoration
Stream restoration or river restoration, sometimes called river reclamation in the UK, describes a set of activities that help improve the environmental health of a river or stream.
Stream restoration or river restoration, sometimes called river reclamation in the UK, describes a set of activities that help improve the environmental health of a river or stream.
Subterranean river
A subterranean river is a river that runs wholly or partly beneath the ground surface – one where the riverbed does not represent the surface of the Earth.
A subterranean river is a river that runs wholly or partly beneath the ground surface – one where the riverbed does not represent the surface of the Earth.
Thalweg
Thalweg (; "valley way") in geography and fluvial geomorphology signifies the deepest continuous inline within a valley or watercourse system.
Thalweg (; "valley way") in geography and fluvial geomorphology signifies the deepest continuous inline within a valley or watercourse system.
Tinaja
Tinaja is a term used in the American Southwest for water pockets formed in bedrock depressions that occur below waterfalls or are carved out by spring flow or seepage.
Tinaja is a term used in the American Southwest for water pockets formed in bedrock depressions that occur below waterfalls or are carved out by spring flow or seepage.
Trench drain
A trench drain (also channel drain, line drain, slot drain, linear drain or strip drain) is a specific type of floor drain containing a dominant through- or channel...
A trench drain (also channel drain, line drain, slot drain, linear drain or strip drain) is a specific type of floor drain containing a dominant through- or channel...
Tributary
A tributary or affluent is a stream or river that flows into a main stem (or parent) river or a lake.
A tributary or affluent is a stream or river that flows into a main stem (or parent) river or a lake.
Urban stream
An urban stream is a formerly natural waterway that flows through a heavily populated area.
An urban stream is a formerly natural waterway that flows through a heavily populated area.