Publications

Homeowner BMP Guide
HomeownerGuide

CSN’s newly released Homeowner BMP Guide presents a step by step approach for analyzing your property to find out whether it makes sense to install a rain garden or other residential stewardship practices.
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Technical Bulletin No 10: Bioretention Illustrated!
bioretentionillustrated

Final version now available!
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Design Specification No 15: Extended Detention Pond
Extended Detention Pond

An extended Detention pond relies on 12 to 24 hour detention of stormwater runoff after each rain event; an under-sized outlet structure restricts stormwater flow so it backs up and is stored within the basin.
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Design Specification No 14: Wet Pond
Wet Pond

Wet ponds consist of a permanent pool of standing water that promotes a better environment for gravitational settling, biological uptake and microbial activity.
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Design Specification No 13: Constructed Wetlands
constructed-wetland

Constructed wetlands are shallow depressions that receive stormwater inputs for water quality treatment, are typically less than 1 foot deep, and possess variable microtopography to promote dense and diverse wetland cover.
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Design Specification No 12: Filtering Practices
Stormwater Filter

Stormwater filters depend mainly on physical treatment mechanisms to remove pollutants from stormwater runoff, including gravitational settling in the sedimentation chamber, straining at the top of the filter bed, and filtration and adsorption onto the filter media.
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Design Specification No 11: Wet Swale
Vegetated wet swale

Wet swales can provide runoff filtering and treatment within the conveyance system and are a cross between a wetland and a swale.
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Design Specification No 10: Dry Swales
Dry Swale

Dry swales are essentially bioretention cells that are shallower, configured as linear channels, and covered with turf or other surface material (other than mulch and ornamental plants).
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Design Specification No 9: Bioretention
bioretention

Bioretention creates a good environment for runoff reduction, filtration, biological uptake, and microbial activity, and provides high pollutant removal; bioretention can become an attractive landscaping feature with high amenity value and community acceptance.
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Design Specification No 8: Infiltration Practice
Infilttration

Infiltration practices use temporary surface or underground storage to allow incoming stormwater runoff to exfiltrate into underlying soils, allowing for a very high runoff volume reduction capability.
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