2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/05/2017 | 2:15 PM - 2:30 PM | FROM GUTTER TO STREAM: CONTRIBUTIONS OF BUILT HEADWATERS TO DISSOLVED NITROGEN AND CARBON IN URBAN STORMWATER | 302A
FROM GUTTER TO STREAM: CONTRIBUTIONS OF BUILT HEADWATERS TO DISSOLVED NITROGEN AND CARBON IN URBAN STORMWATER
Gutters and stormwater pipes are the engineered, ephemeral headwaters of urban stream networks. During baseflow conditions, these areas store and process organic matter (OM) which is then mobilized during storms. We hypothesized that roofs and catch basins are sources of readily mobilized dissolved organic carbon (DOC) and nitrogen (TDN) that serve as control points for the flux of these constituents through urban streams.
To test these hypotheses, we measured the output of DOC and TDN from downspouts of three single family homes and three stormwater outfalls in a 60 ha catchment Durham, NC. We then scaled these measurements to the total area of roofs and impervious surface cover drained by stormwater infrastructure, and calculated loads for storms from November 2015 through November 2016. The mean annual export of DOC from a single roof is 5.07 (0.056) kg C; roofs in this catchment contribute approximately 2028 kg C per year to the stream during stormflow. While roofs represent less than 10% of land cover, they contribute up to 50% of DOC and TDN load during storms.
- C08 Urban Ecology
- C28 Land-Water Interfaces
- S02 Urban streams, aquatic ecology, and stormwater engineering: How do we encourage integration, opportunities and collaboration in an era of green infrastructure innovation?
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Megan Fork
(), Cary Institute of Ecosystem Studies, forkm@caryinstitute.org;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Jim Heffernan
(), Duke University, james.heffernan@duke.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Joanna Blaszczak
(), Global Water Center and Department of Natural Resources and Environmental Science, University of Nevada, Reno, jblaszczak@unr.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -