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Many features in the natural landscape provide the important hydrologic functions of retention, detention, infiltration, and filtering of stormwater. These features include, but are not limited to:
Many features in the natural landscape provide the important hydrologic functions of retention, detention, infiltration, and filtering of stormwater. These features include, but are not limited to:
*highly permeable [[soils]]
*highly permeable [[Soil groups|soils]]
*pocket [[wetlands]]
*pocket [[wetlands]]
*significant small (headwater) drainage features
*significant small (headwater) drainage features
Streams include all sizes of rivers, creeks and ephemeral channels. Landscape buffers provide filtration, infiltration, flood management, and bank stability benefits. Buffers are essentially a no capital cost and low maintenance form of infrastructure, recommended for pollutant removal and to support aquatic and terrestrial riparian habitat <ref>Wenger, S. (1999) A Literature Review on Riparian Buffer Width, Extent, and Vegetation. Institute of Ecology, University of Georgia. Athens, GA</ref>.
Streams include all sizes of rivers, creeks and ephemeral channels. Landscape buffers provide filtration, infiltration, flood management, and bank stability benefits. Buffers are essentially a no capital cost and low maintenance form of infrastructure, recommended for pollutant removal and to support aquatic and terrestrial riparian habitat <ref>Wenger, S. (1999) A Literature Review on Riparian Buffer Width, Extent, and Vegetation. Institute of Ecology, University of Georgia. Athens, GA</ref>.
The benefits of buffers diminish when slopes are greater than 25 %, so steep slopes should not be counted as buffer <ref>Scheuleer, T (1995) The Architecture of Urban Stream Buffers. Watershed Protection Techniques. 4(1).</ref>
The benefits of buffers diminish when slopes are greater than 25 %, so steep [[slopes]] should not be counted as buffer <ref>Scheuleer, T (1995) The Architecture of Urban Stream Buffers. Watershed Protection Techniques. 4(1).</ref>
===Preserve areas of undisturbed soil and vegetation cover===
===Preserve areas of undisturbed soil and vegetation cover===
Washington D.C. http://www.caseytrees.org/planning/design-resources/fordesigners/tree-space/index.php</ref>
Washington D.C. http://www.caseytrees.org/planning/design-resources/fordesigners/tree-space/index.php</ref>
==References==
[[category: planning]]
[[category: planning]]