Charles A Cravotta, III, PhD, PG
Charles "Chuck" Cravotta is a research hydrologist whose projects focus on geochemical and hydrological processes that control water quality, particularly the sources, transport, and attenuation of metals and nutrients in undisturbed and mining-impacted watersheds and aquifers. Results apply to scientific and regulatory programs for the prevention and remediation of aquatic contamination.
Biography
Education
1979 B.A. Environmental Sciences, University of Virginia
1980-82 Continuing education, George Mason University
1986 M.S. Geochemistry and Mineralogy, Pennsylvania State University
1996 Ph.D. Geochemistry and Mineralogy, Pennsylvania State University
Professional Assignments
1987-present: Research Hydrologist, USGS, Pennsylvania Water Science Center, New Cumberland, Pennsylvania
1986-1987: Geochemist, IT Corporation, Monroeville, Pennsylvania
1982-1986: Graduate Teaching and Research Assistant, Geosciences Department, Pennsylvania State University, University Park, Pennsylvania
1979-1982: Geologist, Office of Scientific Publications, Geologic Division, USGS, Reston, Virginia
1979: Geologic Technician, Virginia State Water Control Board, Alexandria, Virginia
Professional Affiliations and Certification
2018-present: Adjunct Instructor, Earth and Environmental Sciences, University of Pittsburgh
2011-2016: Associate Editor, Mine Water and the Environment Journal, International Mine Water Association
2001-2005: Adjunct Assistant Professor of Environmental Engineering, Pennsylvania State University, Harrisburg, Pennsylvania
1995-present: Registered Professional Geologist in Pennsylvania PG-002255-G
Awards and Recognition
The Society for Organic Petrology Dalaway J. Swain Award “Best Refereed Paper”, 2016
Department of Interior Partners in Conservation Award (AMDTreat Development Team), 2013
Top 50 Most-Cited Papers in "Applied Geochemistry" (2006-2011)
Department of Interior Superior Service Award, 2005
Schuylkill County Conservation Professional of the Year Award, 2003
Department of Interior Honor Award, 2000
Pennsylvania Department of Environmental Protection Award for Excellence, 1999
External Research Database
Science and Products
Effects of Abandoned Coal-Mine Drainage on Streamflow and Water Quality in the Mahanoy Creek Basin, Schuylkill, Columbia, and Northumberland Counties, Pennsylvania, 2001
This report assesses the contaminant loading, effects to receiving streams, and possible remedial alternatives for abandoned mine drainage (AMD) within the Mahanoy Creek Basin in east-central Pennsylvania. The Mahanoy Creek Basin encompasses an area of 157 square miles (407 square kilometers) including approximately 42 square miles (109 square...
Cravotta, Charles A.Acidity and Alkalinity in mine drainage: Practical considerations
In this paper, we emphasize that the Standard Method hot peroxide treatment procedure for acidity determination (hot acidity) directly measures net acidity or net alkalinity, but that more than one water-quality measure can be useful as a measure of the severity of acid mine drainage. We demonstrate that the hot acidity is related to the pH,...
Cravotta, III, Charles A.; Kirby, Carl S.Acidity and alkalinity in mine drainage: Theoretical considerations
Acidity, net acidity, and net alkalinity are widely used parameters for the characterization of mine drainage, but these terms are not well defined and are often misunderstood. Incorrect interpretation of acidity, alkalinity, and derivative terms can lead to inadequate treatment design or poor regulatory decisions. We briefly explain derivations...
Kirby, Carl S.; Cravotta, Charles A.Size and performance of anoxic limestone drains to neutralize acdic mine drainagei
Acidic mine drainage (AMD) can be neutralized effectively in underground, anoxic limestone drains (ALDs). Owing to reaction between the AMD and limestone (CaCO3), the pH and concentrations of alkalinity and calcium increase asymptotically with detention time in the ALD, while concentrations of sulfate, ferrous iron, and manganese typically are...
Cravotta, C.A.Effects of abandoned coal-mine drainage on streamflow and water quality in the Shamokin Creek Basin, Northumberland and Columbia Counties, Pennsylvania, 1999-2001
This report assesses the contaminant loading, effects to receiving streams, and possible remedial alternatives for abandoned mine drainage (AMD) within the upper Shamokin Creek Basin in east-central Pennsylvania. The upper Shamokin Creek Basin encompasses an area of 54 square miles (140 square kilometers) within the Western Middle Anthracite Field...
Cravotta, Charles A.; Kirby, Carl S.Design and performance of limestone drains to increase pH and remove metals from acidic mine drainage, Chapter 2
Data on the construction characteristics and the composition of influent and effluent at 13 underground, limestone-filled drains in Pennsylvania and Maryland are reported to evaluate the design and performance of limestone drains for the attenuation of acidity and dissolved metals in acidic mine drainage. On the basis of the initial mass of...
Cravotta, Charles A.; Watzlaf, George R.Use of stable isotopes of carbon, nitrogen, and sulfur to identify sources of nitrogen in surface waters in the lower Susquehanna River basin, Pennsylvania
With the exception of sewage and septic effluents, most nitrogen sources and soils contain larger proportions of organic and reduced forms of carbon, nitrogen, and sulfur than inorganic, oxidized forms. In contrast, most surface water and ground water contains larger proportions of dissolved inorganic carbon, nitrogen, and sulfur forms than...
Cravotta, Charles A.Assessing mine drainage pH from the color and spectral reflectance of chemical precipitates
The pH of mine impacted waters was estimated from the spectral reflectance of resident sediments composed mostly of chemical precipitates. Mine drainage sediments were collected from sites in the Anthracite Region of eastern Pennsylvania, representing acid to near neutral pH. Sediments occurring in acidic waters contained primarily schwertmannite...
Williams, D.J.; Bigham, J.M.; Cravotta, C.A.; Traina, S.J.; Anderson, J.E.; Lyon, J.G.Water-quality trends for a stream draining the Southern Anthracite Field, Pennsylvania
Stream flow, chemical and biological data for the northern part of Swatara Creek, which drains a 112 km2 area in the Southern Anthracite Field of eastern Pennsylvania, indicate progressive improvement in water quality since 1959, after which most mines in the watershed had been flooded. Drainage from the flooded mines contributes substantially to...
Cravotta, C.A.; Bilger, Michael D.Detecting change in water quality from implementation of limestone treatment systems in a coal-minded watershed
During 1996-97, a variety of limestone-based treatment systems were implemented to neutralize acidic mine drainage and reduce the transport of dissolved metals in the northern part of the Swatara Creek watershed, which drains a 43-mi2 (112-km2) area in the Southern Anthracite Field upstream from Ravine, Pa. Since 1996, the current project has...
Cravotta, Charles A.; Weitzel, Jeffrey B.Relations among sulfate, metals, sediment, and streamflow data for a stream draining a coal-mined watershed in East-Central Pennsylvania
Streamflow and water-quality data for the northern part of Swatara Creek, which drains a 112-km2 area in the Southern Anthracite Field of east-central Pennsylvania, indicate iron, copper, and lead, and to a lesser extent manganese and zinc, are transported with suspended particles during stormflow conditions. During stormflow conditions,...
Cravotta, Charles A.Geochemical investigations by the U.S. Geological Survey on uranium mining, milling, and environmental restoration
Recent research by the U.S. Geological Survey has characterized contaminant sources and identified important geochemical processes that influence transport of radionuclides from uranium mining and milling wastes. 1) Selective extraction studies indicated that alkaline earth sulfates and hydrous ferric oxides are important hosts of 226Ra in uranium...
Landa, Edward R.; Cravotta, Charles A. ; Naftz, David L.; Verplanck, Philip L.; Nordstrom, D. Kirk; Zielinski, Robert A.