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33 Cards in this Set
- Front
- Back
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fecal coliform bacteria
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measure of disease potential
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oligotrophic
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water is low in nutrients
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eutrophic
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water becomes rich in nutrients
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bioremediation
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Process by which microorganisms that consume pollutants
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inadvertent water reuse
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water withdrawn, treated , used, treated, and returned to envirnment
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indirect water reuse
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planned endevour
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direct water reuse
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treated wastewater piped directly from treatment plant to next user
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biological oxygen demand
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amount of O2 reqd for biological decompostion. O2 consumed by micro-organisms
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dissolved oxygen content
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amount of O2 dissolved in water
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zones of pollution
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high BOD exists, DO decreases
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zones of decomposition
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DO reaches minimum, BOD max
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zones of recovery
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DO increases, BOD reduced
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acid mine drainage
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water contacts mines and becomes high in sulfuric acid content
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point source
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empty directly into streams and rivers
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non point source
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diffused/ influenced by external factors. Ex runoff
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saltwater intrusion
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saltwater infiltrates well
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infiltration
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process by which water on the ground surface enters the soil
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percolation
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the downward movement of water through spaces in soil due to gravity
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transpiration
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loss of water vapor from parts of plants
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groundwater
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water below water table
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water table
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upper surface of groundwater
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recharge zones
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locations where surface waters move into
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discharge zones
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groundwater flows out onto surface
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vadose zone
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empty spaces in soil for water to infiltrate
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effluent streams
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flow maintained during dry season by groundwater seepage into stream channel
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influent streams
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entirely above water table, only flows as result of precipitation
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aquifer
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underground zone where groundwater can be obtained from at a useful rate.
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cone of depression
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depression around well when water pumped from aquifer
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overdraft
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groundwater withdrawal exceeds natural inflow
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off stream water uses
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water removed from its source
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consumptive water uses
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off stream. Water used by plants/animals/humans/industry
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in stream water use
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navigation,fishing
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wetlands
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shallow depressions that seasonally hold water
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