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Urban stream syndrome (USS) is a consistent observed ecological degradation of streams caused by urbanization. This kind of stream degradation is commonly found in areas near or in urban areas. USS also considers hydrogeomorphology changes which are characterized by a deeper, wider catchment, reduced living space for biota, and altered sediment ...
Urban stream syndrome is a consistently observed trait of urbanization characterized by high nutrient and contaminant concentration, altered stream morphology, increased dominance of dominant species, and decreased biodiversity [29] [52] The two primary causes of urban stream syndrome are storm water runoff and wastewater treatment plant effluent.
While historically pure, the stream now suffers from urban stream syndrome, partially due to the amount of impervious surfaces within its watershed. Flowing over glacial till, the stream's bed is rich in cobbles and the kill supports populations of benthic macroinvertebrates, trees, shrubs, fish, birds, snapping turtles, and frogs.
Water stress is increasingly affecting urbanization. Water stress arises through slum development, anarchic construction, water scarcity, the absence of financial structures, the absence of basic structures, the absence of infrastructure such as roads, bridges, sidewalks, signs, markets, schools, etc., can sometimes hinder the productivity of certain cities.
Pre-spawn mortality is a phenomenon where adult coho salmon, Oncorhynchus kisutch, die before spawning when returning to freshwater streams to spawn. [1] [2] It is also known as Urban Runoff Mortality Syndrome in more recent studies.
Water Sensitive Urban Design with Green Infrastructure in the bottom right corner.. Water-sensitive urban design (WSUD) is a land planning and engineering design approach which integrates the urban water cycle, including stormwater, groundwater, and wastewater management and water supply, into urban design to minimise environmental degradation and improve aesthetic and recreational appeal. [1]
Freshwater salinization is a growing threat to urban streams, watersheds, and other sources of freshwater, primarily due to freshwater salinization syndrome. [11] A major driver in the mobilization of salts, nutrients, and metals are anthropogenic factors such as road salting, sweage systems, and the addition of impervious surfaces. [11]
Urban runoff is surface runoff of rainwater, landscape irrigation, and car washing [1] created by urbanization. Impervious surfaces ( roads , parking lots and sidewalks ) are constructed during land development .