2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/24/2018 | 11:45 AM - 12:00 PM | INFLUENCE OF LAND COVER, DISCHARGE, AND SEASON ON SUSPENDED SEDIMENT AND NUTRIENT CONCENTRATIONS IN SW OHIO STREAMS | 330 B
INFLUENCE OF LAND COVER, DISCHARGE, AND SEASON ON SUSPENDED SEDIMENT AND NUTRIENT CONCENTRATIONS IN SW OHIO STREAMS
Excessive suspended sediment and nutrient concentrations often result in negative environmental impacts within rivers and on downstream water bodies. Understanding land use impacts on suspended sediment and nutrient concentrations is critical for developing management practices that improve water quality. Although it is widely known that urban and agricultural development tend to increase surface water pollutants, the relative impacts between urban and agricultural land cover are less understood. Additionally, land cover, discharge and seasonality can all influence sediment and nutrient dynamics in rivers, yet often these factors are not analyzed together. The purpose of this study is to determine the impacts of land cover, discharge, and season on suspended sediment and nutrient concentrations, across a large land cover gradient (8-92% urban), in eight SW Ohio streams. We collected weekly base flow samples from each stream for a one year period and determined total suspended sediment, total nitrogen, nitrate, total phosphorus, and phosphate concentrations along with N:P ratios. Preliminary results indicate that land use and season have significant impacts on sediment and nutrient concentrations. The presence of waste water treatment plants appears to increase phosphorus concentrations regardless of land use.
- Sediment
- Landuse
- Water Quality
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Presenters/Authors
Rachel Spahr
(), Miami University, spahrre@miamioh.edu;
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Jeff Lazar
(), Miami University, lazarj@miamioh.edu;
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Bartosz Grudzinski
(), Miami University, grudzibp@miamioh.edu;
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