Overview Links
Design Specs. Research Publications
BAE Stormwater Group
Water Quality / Hydrology
Runoff Temperature Reduction
Pathogen Indicator Species
Impacts of Construction Activity
Bioretention Literature Review

Research has shown that bioretention can reduce the temperature of incoming runoff during the warmer seasons. This is especially important in cold water regions with trout populations.


Temperature Sites

  A total of 4 bioretention areas were monitored in the western part of North Carolina to examine the effect that they had on the temperature of stormwater runoff. More details of this study can be found at Stormwater BMPS and Runoff Temperature or in Factsheets and Journal Articles  

UNC-A Botanical Gardens


This site receives runoff from a small visitor parking lot just down the road from the UNC-A campus. This BMP is unique due to its large soil depth. The BMP effluent is discharged directly into the same creek as the UNC-A wetland.

Caldwell County Extension Office

Caldwell Bioretention

This bioretention area is located outside of the Caldwell County Library and Extension Office. It receives runoff from a relatively shaded parking lot and contains dense vegetation.

Brevard Site 1

Brevard 1

This bioretention area is one of many nearby cells receiving runoff from a shopping center parking lot. This BMP is vegetated, but has a relatively shallow soil depth.

Brevard Site 2

Brevard 2

This bioretention area is located immediately adjacent to Brevard bioretention area 1. The depth of soil in this cell is less than that of Brevard bioretention area 1.