2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/21/2018 | 10:15 AM - 10:30 AM | HYDROLOGY AND CHEMISTRY OF URBANIZED HEADWATER STREAMS IN AUSTIN, TX: A CONTEXT FOR ECOLOGICAL EVALUATION | 310 A
HYDROLOGY AND CHEMISTRY OF URBANIZED HEADWATER STREAMS IN AUSTIN, TX: A CONTEXT FOR ECOLOGICAL EVALUATION
Austin Texas has a drainage network of ~ 9,000 km of creeks, of which 40% are small headwaters < 0.25 sq km. In conjunction with this dense network of urban streams, Austin also has a robust stormwater monitoring program that has looked at the hydrology and chemistry of small-area drainages for more than 30 years. Most of this data has been used to report non-point source pollutant discharge relationships and the effects of development on watershed hydrology. More recently there has been a keen interest, both locally in Austin and nationally, in understanding the ecological dynamics of urban headwater systems, and their contributions to the larger context of water resource management. A review of these data suggests that these urban headwater streams are highly variable in their runoff-coefficients, even accounting for impervious cover relationships, particularly for smaller events, and that although some water chemistry constituents can be predicted by impervious cover, many cannot, including nutrients, bacteria and suspended solids. These results help contextualize the diversity of conditions that urban headwaters represent and suggest that they should not be grouped simplistically, as is often the case.
- Hydrology
- Connectivity
- Impairment
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Presenters/Authors
Mateo Scoggins
(), City of Austin, mateo.scoggins@austintexas.gov;
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