Changes

;Adsorption ;adsorption

;Adsorption  

;adsorption

:The attachment of gas, vapour or dissolved matter onto the surface of solid materials.  

:The attachment of gas, vapour or dissolved matter onto the surface of solid materials.  

;Aggregate ;aggregates ;aggregate ;Aggregates

;Aggregate  

;Aggregates

;aggregate  

;aggregates

:A broad category of particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates, and available in various particulate size gradations.

:A broad category of particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates, and available in various particulate size gradations.

:Layer of rock or soil that holds or transmits water.  

:Layer of rock or soil that holds or transmits water.  

;Asphalt ;asphalt

;Asphalt  

;asphalt

:A mixture of mineral aggregates bound with bituminous materials, used in the construction and maintenance of paved surfaces.  

:A mixture of mineral aggregates bound with bituminous materials, used in the construction and maintenance of paved surfaces.  

;Attenuation ;attenuation

;Attenuation  

;attenuation

:Reduction of peak flow and increase of the duration of the flow event.  

:Reduction of peak flow and increase of the duration of the flow event.  

;Base flow ;base flow

;Base flow  

;base flow

:The sustained flow in a channel due to groundwater interaction.  

:The sustained flow in a channel due to groundwater interaction.  

;

;Basin

 

;Berm

;Berm

;berm

;berm

:A compacted earthen wall that diverts runoff or creates shallow ponding of runoff. In some cases, runoff ponds behind the berm and gradually flows through it or is infiltrated.

:A compacted earthen wall that diverts runoff or creates shallow ponding of runoff. In some cases, runoff ponds behind the berm and gradually flows through it or is infiltrated.

;Biofilter

;Biofilter

:A bioretention BMP featuring an impermeable liner and underdrain that prevents infiltration of runoff into the underlying native soil; provides sedimentation and filtration of urban runoff as it passes through the mulch layer, engineered filter media and vegetation root zone.

:A bioretention BMP featuring an impermeable liner and underdrain that prevents infiltration of runoff into the underlying native soil; provides sedimentation and filtration of urban runoff as it passes through the mulch layer, engineered filter media and vegetation root zone.

;Bioretention

;Bioretention

:A stormwater filtration and/or infiltration practice. The practice is a shallow excavated surface depression containing a prepared soil mix, mulch, and planted with specially selected vegetation. The system is engineered to temporarily store runoff in the depression and gradually filter it through the mulch, filter media, and root zone. Pollutants are removed from runoff through filtration in the soil and uptake by plant roots and runoff volumes are reduced through evapotranspiration and infiltration.

:Any shallow excavated surface depression containing prepared filter media, mulch, and planted with selected vegetation.

;Bioswale

;Bioswale

;Dry swale

;Dry swale

:Linear bioretention cell designed to convey, treat and attenuate stormwater runoff. The engineered filter media soil mixture and vegetation slows the runoff water to allow sedimentation, filtration through the root zone, evapotranspiration, and infiltration into the underlying native soil.

:Linear bioretention cell designed to convey, treat and attenuate stormwater runoff. The engineered filter media soil mixture and vegetation slows the runoff water to allow sedimentation, filtration through the root zone, evapotranspiration, and infiltration into the underlying native soil.

;Catchment

;Catchment

;Source area

;Source area

:The land draining to a single reference point (usually a structural BMP); similar to a subwatershed, but on a smaller scale.   

:The land draining to a single reference point (usually a structural BMP); similar to a subwatershed, but on a smaller scale.   

;Check dam  

;Check dam  

:Structure constructed of a non-erosive material, such as suitably sized aggregate, wood, gabions, riprap, or concrete; used to slow runoff water. Can be employed in practices such as bioswales and enhanced grass swales.

:Structures constructed of a non-erosive material, such as suitably sized aggregate, wood, gabions, riprap, or concrete; used to slow runoff water. Can be employed in practices such as bioswales and enhanced grass swales.

;Cistern

;Cistern

:Tank used to store rainwater (typically roof runoff) for later use.

:Tank used to store rainwater (typically roof runoff) for later use.

;Compost

;Compost

:Decayed organic material used as a plant fertilizer. Compost helps to support healthy plant growth through the slow release of nutrients and the retention of moisture in the soil.  

:Decayed organic material used as a plant fertilizer. Compost helps to support healthy plant growth through the slow release of nutrients and the retention of moisture in the soil.  

;Cultivar

;Cultivar

:A cultivated variety of a plant created by horticultural practice, often closed in large numbers from a similar individual. Cultivar names typically appear after the scientific name of a species, e.g. Prunus virginiana ‘Shubert’.

:A cultivated variety of a plant created by horticultural practice, often closed in large numbers from a similar individual. Cultivar names typically appear after the scientific name of a species, e.g. Prunus virginiana ‘Shubert’.