Bioretention Outflow: Does It Mimic Nonurban Watershed Shallow Interflow?

Autor:	Daniel E. Line, William F. Hunt, K. M. DeBusk
Rok vydání:	2011
Předmět:	Hydrology Watershed Groundwater recharge Bioretention Infiltration (hydrology) Interflow Streamflow Environmental Chemistry Environmental science Outflow Low-impact development General Environmental Science Water Science and Technology Civil and Structural Engineering
Zdroj:	Journal of Hydrologic Engineering. 16:274-279
ISSN:	1943-5584 1084-0699
DOI:	10.1061/(asce)he.1943-5584.0000315
Popis:	Bioretention, a key structural practice of low impact development (LID), has been proved to decrease peak flow rates and volumes, promote infiltration and evapotranspiration, and improve water quality. Exactly how well bioretention mimics predevelopment (or “natural”) hydrology is an important research question. Do bioretention outflow rates mirror shallow groundwater interevent stream recharge flow associated with natural or nonurban watersheds? Streamflow from three small, nonurban watersheds, located in Piedmont, part of central North Carolina, was compared with bioretention outflow from four cells also in North Carolina’s Piedmont region. Each benchmark watershed drained to a small stream, where flow rate was monitored for an extended period of time. After normalizing the flow rates and volumes by watershed size, data were combined to form two data sets: bioretention outflow and stream interevent flow. Results indicate that there is no statistical difference between flow rates in streams draining unde...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7eef1e271405ceb1ca238a7e6b789a5c https://doi.org/10.1061/(asce)he.1943-5584.0000315 Zobrazit plný text záznamu