2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/24/2018 | 2:15 PM - 2:30 PM | ASSESSING THE EFFECTS OF URBAN DEVELOPMENT ON HYDROLOGY AND WATER QUALITY IN NORTHERN VIRGINIA STREAMS | 330 B
ASSESSING THE EFFECTS OF URBAN DEVELOPMENT ON HYDROLOGY AND WATER QUALITY IN NORTHERN VIRGINIA STREAMS
Urban development in watersheds can impact streams in a number of ways: decreased baseflow, flashier flow, increased erosion, increases in nutrient and pollutant concentrations, and changes in stream chemistry. This study investigated three streams in Meadowood Special Recreation Management Area (SRMA), in Northern Virginia, with varying levels of urban development in their watersheds. The streams were monitored weekly for two years, and discharge, specific conductance, turbidity, nutrient concentrations, and radon (a groundwater indicator) were measured. Significant differences in water quality were observed among the three streams. Radon levels were highest in the least urbanized stream, supporting the idea of a higher baseflow index. Specific conductance was positively correlated with watershed urban development and winter road salting. Concentrations of nitrate, phosphate and ammonium also reflected the influence of land use. A groundwater survey was conducted to assess variability in the quality and influx rate of groundwater throughout the stream system. This study characterizes temporal variation over two years of sampling as well as spatial variation in water quality related to urbanization and provides insights about how streams within protected areas are influenced by development outside the boundaries of those areas.
- Anthropogenic
- Aquatic-terrestrial Linkage
- Watershed
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Presenters/Authors
Karen Knee
(), American University, knee@american.edu;
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Jacob Melone
(), American University, jacob.c.melone@gmail.com;
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Melanie Friedel
(), American University, mf0040a@student.american.edu;
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Jesse Weinstein
(), American University, jw8874a@student.american.edu;
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Harrison Hyde
(), American University, hh7062a@student.american.edu;
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Nikita Mukherjee
(), American University, nm6674a@student.american.edu;
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Keeli Howard
(), American University, kh5325a@student.american.edu;
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