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Deanna Hardesty

Deanna is a hydrologist with the South Atlantic Water Science Center in Raleigh, NC.

Professional Experience

  • Hydrologist, U.S. Geological Survey | 2022 - present

  • Geospatial Analyst, U.S. Environmental Protection Agency | 2021 - 2022

  • Hydrologic Technician, North Carolina State University | 2019 - 2021

  • Geneticist & Interim Lab Manager, University of North Carolina at Chapel Hill | 2017 - 2019

  • Research Technician, University of North Carolina at Wilmington | 2013 - 2017

Science and Products

USGS

Manning's Roughness Coefficients for South Carolina Streams

The objective of this project will be to verify channel and flood plain Manning’s roughness coefficients (n) for selected streams in South Carolina. For streams with cross sections that warrant subdivision of the n values, the verification for the channel and flood plain will be performed by subdividing the n values instead of using a composite n value. The n values will be determined for various...
By
South Atlantic Water Science Center (SAWSC)
Manning's Roughness Coefficients for South Carolina Streams

Manning's Roughness Coefficients for South Carolina Streams

The objective of this project will be to verify channel and flood plain Manning’s roughness coefficients (n) for selected streams in South Carolina. For streams with cross sections that warrant subdivision of the n values, the verification for the channel and flood plain will be performed by subdividing the n values instead of using a composite n value. The n values will be determined for various...
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Discrete chloride and specific conductance (SC) measurements, chloride-SC regression equations, and daily and hourly mean SC values and chloride predictions for 88 USGS water quality monitoring stations in the Delaware River Basin, 2019-2022 Discrete chloride and specific conductance (SC) measurements, chloride-SC regression equations, and daily and hourly mean SC values and chloride predictions for 88 USGS water quality monitoring stations in the Delaware River Basin, 2019-2022

Freshwater salinization, or the increase of dissolved ions like chloride, threaten freshwater streams and rivers across the globe. Continuous (e.g., daily or hourly mean) predictions of chloride concentration were used in an analysis to quantify the extent to which chloride concentrations exceeded ecological thresholds at U.S. Geological Survey (USGS) water quality monitoring sites...
By
South Atlantic Water Science Center (SAWSC)

Regional high-frequency monitoring revealed chloride concentrations in exceedance of ecological benchmarks in urban streams across the Delaware River Basin, USA Regional high-frequency monitoring revealed chloride concentrations in exceedance of ecological benchmarks in urban streams across the Delaware River Basin, USA

Rising chloride concentrations pose critical risks to freshwater stream ecosystems in temperate regions like the Delaware River Basin (DRB), USA, where winter deicer applications (i.e., road salt) are common. Increasing chloride concentrations have been documented in the region, but the extent to which chloride exceeds regulatory benchmarks remains unclear because detection of...
Authors
Rosemary M. Fanelli, Michelle Morency, Brandon J. Fleming, Joel Moore, Deanna Hardesty, Megan E. Shoda
By
Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC)

Triangle Area Water Supply Monitoring Project, North Carolina Triangle Area Water Supply Monitoring Project, North Carolina

Introduction Rivers and surface-water reservoirs supply drinking water to most residents throughout the Triangle area in North Carolina. These drinking-water supplies may be at risk because of rapid and continued land use change throughout the region. In partnership with the U.S. Geological Survey, several Triangle-area municipalities established a long-term water-quality and streamflow...
Authors
Rosemary M. Fanelli, Deanna Hardesty, J. Diaz
By
Water Resources Mission Area, South Atlantic Water Science Center (SAWSC)

Science and Products

USGS

Manning's Roughness Coefficients for South Carolina Streams

The objective of this project will be to verify channel and flood plain Manning’s roughness coefficients (n) for selected streams in South Carolina. For streams with cross sections that warrant subdivision of the n values, the verification for the channel and flood plain will be performed by subdividing the n values instead of using a composite n value. The n values will be determined for various...
By
South Atlantic Water Science Center (SAWSC)
Manning's Roughness Coefficients for South Carolina Streams

Manning's Roughness Coefficients for South Carolina Streams

The objective of this project will be to verify channel and flood plain Manning’s roughness coefficients (n) for selected streams in South Carolina. For streams with cross sections that warrant subdivision of the n values, the verification for the channel and flood plain will be performed by subdividing the n values instead of using a composite n value. The n values will be determined for various...
Learn More

Discrete chloride and specific conductance (SC) measurements, chloride-SC regression equations, and daily and hourly mean SC values and chloride predictions for 88 USGS water quality monitoring stations in the Delaware River Basin, 2019-2022 Discrete chloride and specific conductance (SC) measurements, chloride-SC regression equations, and daily and hourly mean SC values and chloride predictions for 88 USGS water quality monitoring stations in the Delaware River Basin, 2019-2022

Freshwater salinization, or the increase of dissolved ions like chloride, threaten freshwater streams and rivers across the globe. Continuous (e.g., daily or hourly mean) predictions of chloride concentration were used in an analysis to quantify the extent to which chloride concentrations exceeded ecological thresholds at U.S. Geological Survey (USGS) water quality monitoring sites...
By
South Atlantic Water Science Center (SAWSC)

Regional high-frequency monitoring revealed chloride concentrations in exceedance of ecological benchmarks in urban streams across the Delaware River Basin, USA Regional high-frequency monitoring revealed chloride concentrations in exceedance of ecological benchmarks in urban streams across the Delaware River Basin, USA

Rising chloride concentrations pose critical risks to freshwater stream ecosystems in temperate regions like the Delaware River Basin (DRB), USA, where winter deicer applications (i.e., road salt) are common. Increasing chloride concentrations have been documented in the region, but the extent to which chloride exceeds regulatory benchmarks remains unclear because detection of...
Authors
Rosemary M. Fanelli, Michelle Morency, Brandon J. Fleming, Joel Moore, Deanna Hardesty, Megan E. Shoda
By
Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC)

Triangle Area Water Supply Monitoring Project, North Carolina Triangle Area Water Supply Monitoring Project, North Carolina

Introduction Rivers and surface-water reservoirs supply drinking water to most residents throughout the Triangle area in North Carolina. These drinking-water supplies may be at risk because of rapid and continued land use change throughout the region. In partnership with the U.S. Geological Survey, several Triangle-area municipalities established a long-term water-quality and streamflow...
Authors
Rosemary M. Fanelli, Deanna Hardesty, J. Diaz
By
Water Resources Mission Area, South Atlantic Water Science Center (SAWSC)
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