Charles Stillwell, Ph.D.

I'm interested in urban hydrology. How effective is green stormwater infrastructure across spatial scales? How can cities minimize hydrologic alteration? What are realistic restoration targets for urban watersheds? An understanding of hydrologic functions in urban areas are needed to address other challenges such as flooding, poor water quality, and ecologic degradation.

Biography

Current Projects

Understanding the effects of stormwater management practices on water quality and flow

Urban development can have detrimental impacts on streams including altering hydrology, increasing nutrient, sediment, and pollutant loadings, and degrading biological integrity. Stormwater Best Management Practices (BMPs) can be used to mitigate the effects of urban development by retaining large volumes of stormwater runoff and treating runoff to remove pollutants. This project focuses on understanding how the presence, type, and spatial pattern of urban stormwater BMPs in a watershed impacts ecosystem processes and function.

https://www.usgs.gov/centers/sa-water/science/understanding-effects-stormwater-management-practices-water-quality-and

 

Monitoring and assessment of the French Broad River before, during, and after I-26 construction

We have partnered with the North Carolina Department of Transportation (NCDOT) to assess the water-quality and geomorphologic impacts resulting from the I-26 construction projects in western North Carolina. Streamflow, precipitation, and water-quality monitoring data, coupled with periodic assessments of geomorphology, will support the NCDOT construction-site inspections by allowing adaptive responses to potential construction impacts and provide the public with readily accessible, objective information regarding conditions in the French Broad River corridor.

https://www.usgs.gov/centers/sa-water/science/monitoring-water-quality-and-geomorphology-french-broad-river-during-i-26

 

NC Stochastic Empirical Loading and Dilution Model - Scenario Analyses

We have partnered with the North Carolina Department of Transportation (NCDOT) to conduct a series of scenario analyses using the USGS SELDM model. These scenario analyses will be specific to North Carolina and will be used to help to determine what combinations of upstream basin attributes and highway design specfication may impact downstream surface water quality and quantity. 

https://www.usgs.gov/centers/new-england-water/science/seldm-stochastic-empirical-loading-and-dilution-model-project-page

 

Education

  • Ph.D. - Biological and Agricultural Engineering, North Carolina State University, 2019
  • M.Eng. - Biological and Agricultural Engineering, North Carolina State University, 2016
  • B.S. - Civil Engineering, Drexel University, 2014

 

Publications

  • Stillwell, C. C., Hunt, W. F., Page, J. L., Baird, J. B., and Kennedy, S. G. (2018). Stormwater management in nutrient sensitive watersheds: A case study investigating impervious cover limits and pollutant-load regulations. Water Science and Technology, 78 (3), 664-675. https://doi.org/10.2166/wst.2018.338
  • Stillwell, C. C. (2019). Urban Hydrology and Low Impact Development: Exploring New Metrics for Design and Evaluation Across Temporal and Spatial Scales. North Carolina State University. https://repository.lib.ncsu.edu/handle/1840.20/36466

 

Conference Presentations

  • Stillwell, C. C., Nelson, N. N., Hunt, W. F. (2019, July 30). Using random forest models to predict flow metrics in ungauged watersheds and estimate hydrologic alteration in urban streams. Consortium of Universities for the Advancement of Hydrologic Sciences, Inc. Hydroinformatics Conference.
  • Stillwell, C. C., Nelson, N. N., Hunt, W. F. (2019, May 15). Machine learning approaches to inform watershed planning and management in North and South Carolina, USA. NC Water Resources Research Institute Annual Conference.
  • Stillwell, C. C., Nelson, N. N., Hunt, W. F. (2018, July 30). A statistical machine learning approach to guide stormwater management in North and South Carolina, USA. American Society of Agricultural and Biological Engineers Annual International Meeting.
  • Stillwell, C. C., Nelson, N. N., Hunt, W. F. (2018, June 3). Beyond the design storm: Annual hydrologic metrics for improved LID design and evaluation. American Society of Civil Engineers Environmental Water Resources Institute Congress.
  • Stillwell, C. C., Hunt, W. F. (2018, March 14). Modeling alternative LID strategies in a nutrient sensitive watershed. NC Water Resources Research Institute Annual Conference.
  • Stillwell, C. C., Hunt, W. F. (2017, September 14). Commercial LID in a protected watershed: A pilot study for Raleigh, NC, USA. International Conference on Urban Drainage.
  • Stillwell, C. C., Hunt, W. F. (2017, September 13). Defining predevelopment hydrology using annual water balances and flow duration curves. International Conference on Urban Drainage.
  • Stillwell, C. C., Hunt, W. F. (2017, March 15). A Pilot Study to Investigate Commercial Low Impact Development in a Protected Watershed. NC Water Resources Research Institute Annual Conference.
  • Stillwell, C. C., Hunt, W. F. (2016, August 31). A Pilot Study to Investigate Commercial Low Impact Development in a Protected Watershed. American Society of Civil Engineers International Low Impact Development Conference.
  • Stillwell, C. C., Page, J. L., Hunt, W. F. (2015, July 29). Defining Predevelopment Hydrologic Reference Conditions in North Carolina, USA: Preliminary Results. American Society of Agricultural and Biological Engineers Annual International Meeting.
  • Page, J. L., Stillwell, C. C., Hunt, W. F. (2015, January 20). Identifying Hydrologic Targets and Reference Conditions in the North Carolina Piedmont and Coastal Plain. Amerian Society of Civil Engineers International Low Impact Development Conference.

 

Conference Posters

  • Stillwell, C. C., Cain, J., Rasmussen, R., Hopkins, K. (2020, February 13). Synoptic baseflow sampling campaign: Pilot study, 2019, Raleigh, NC. Sumposium on Urbanization and Stream Ecology.
  • Stillwell, C. C., Hunt, W. F. (2017, June 1). Defining Predevelopment Hydrology in North and South Carolina: Initial Findings. Symposium on Urbanization and Stream Ecology.
  • Stillwell, C. C., Hunt, W. F. (2016, August 23). New Stormwater Management Metrics for North and South Carolina to Address Receiving Stream Geomorphology: Proposed Methods and Anticipated Results. EcoStream Stream Ecology and Restoration Conference.