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- Perennial_stream abstract "A perennial stream or perennial river is a stream or river (channel) that has continuous flow in parts of its stream bed all year round during years of normal rainfall. "Perennial" streams are contrasted with "intermittent" streams which normally cease flowing for weeks or months each year, and with "ephemeral" channels that flow only for hours or days following rainfall. During unusually dry years, a normally perennial stream may cease flowing, becoming intermittent for days, weeks, or months depending on severity of the drought. The boundaries between perennial, intermittent, and ephemeral channels are indefinite, and subject to a variety of identification methods adopted by local governments, academics, and others with a need to classify stream-flow permanence. As stream flow decreases in dry weather, visible flow above the stream bed may not be readily evident, especially in streams with coarse substrate (gravel and rocks), where water is flowing beneath and between these particles (hyporheic flow). From a biological perspective, a stream may be considered flowing if sufficient water is available to support flow-dependent aquatic life, including fish and gill-breathing amphibians, benthic insects, crustaceans, and mollusks, many of which survive in shallow hyporheic flow beneath rocks or logs. This extreme low flow may not be detectable on typical USGS stream-flow gages, but is vital to stream ecology.".
- Perennial_stream wikiPageID "10325214".
- Perennial_stream wikiPageRevisionID "583990558".
- Perennial_stream hasPhotoCollection Perennial_stream.
- Perennial_stream subject Category:Bodies_of_water.
- Perennial_stream subject Category:Rivers.
- Perennial_stream type BodiesOfWater.
- Perennial_stream type BodyOfWater109225146.
- Perennial_stream type PhysicalEntity100001930.
- Perennial_stream type River109411430.
- Perennial_stream type Rivers.
- Perennial_stream type Stream109448361.
- Perennial_stream type Thing100002452.
- Perennial_stream type YagoGeoEntity.
- Perennial_stream type YagoPermanentlyLocatedEntity.
- Perennial_stream comment "A perennial stream or perennial river is a stream or river (channel) that has continuous flow in parts of its stream bed all year round during years of normal rainfall. "Perennial" streams are contrasted with "intermittent" streams which normally cease flowing for weeks or months each year, and with "ephemeral" channels that flow only for hours or days following rainfall.".
- Perennial_stream label "Perennial stream".
- Perennial_stream sameAs m.02q8k3_.
- Perennial_stream sameAs Q7167858.
- Perennial_stream sameAs Q7167858.
- Perennial_stream sameAs Perennial_stream.
- Perennial_stream wasDerivedFrom Perennial_stream?oldid=583990558.
- Perennial_stream isPrimaryTopicOf Perennial_stream.