James Richard Degnan

I analyze, interpret and publish water quality information as the Atlantic Region Principal Aquifer Analyst using statistical methods, age tracer modeling, and isotopes. Other duties in this position are budget and sample protocol coordination and data tracking. Our team reports on anthropogenic and geogenic contaminant occurrence and temporal variation using real time monitoring and lab analysis.

Biography

James began work for the USGS in 1994 as a student and received his B.S. in Geology from the University of New Hampshire in 1997. His first duties as a hydrologist with the NH Bedrock Aquifer Assessment project included remote sensing, GIS, geophysics and water quality data analysis. James has been involved in applied science and research projects in the eastern and central US, Honduras and Abu Dhabi. He has worked on and led numerous multi-disciplinary projects that include investigations of hydrogeology, water-quality, and riverbed sediment to help answer questions about water supply and contamination issues.

Affiliations:

Professional Geologist - State of New Hampshire, USA (License #299)

Member - National Ground Water Association, Geological Society of New Hampshire

Chronology of selected past project work:

Predicting iron fouling associated with drainage from roadway sites constructed with rock fill in NH, 2016-2017, lead scientist

Determining sources of nitrate in drinking-water wells near blasting sites in Southern NH, 2013-2016, lead scientist

Logging of deep bedrock wells for geothermal characterization in New Hampshire, 2012-2013, lead scientist

Characterization of the Hydrogeologic Framework and Arsenic Mobility at the Auburn Road Landfill, NH, 2011-2014, lead scientist

Characterization of the extent of elemental mercury contamination in the Androscoggin River, New Hampshire, 2009-2012            

Evaluation of individual fracture contributions of natural contaminants to boreholes, 2009-2010            

Geophysical investigation at degassing stations in Abu Dhabi, United Arab Emirates, 2008-2009            

Surface geophysical and hydrogeologic characterization support, MD, DC, DE WSC, 2007-2017

National Water Quality Assessment (NAWQA) Program: New England Coastal Basins, 2007-2012

MTBE in NH groundwater, 2005-2006

New England Bladder Cancer Study: Contaminant exposure history from former private drinking water wells, 2004-2006

Hydrogeologic characterization of the cell-house site, Berlin, New Hampshire, 2001-2004            

Hydrogeological and nutrient loading study, Great Bay in New Hampshire, 2001-2003

New Hampshire Bedrock Aquifer Assessment, 1997-2001

Evaluation of Scour Potential at Susceptible Bridges in Vermont, 1994-1997

 

Publications

Degnan, J.R., Levitt, J.P., Erickson, M., and Jurgens, B., 2019, Groundwater Time Series Data Indicate Seasonal and Anthropogenic Influences on Arsenic Concentrations at Three Water-supply Wells in New Hampshire, 11th National Monitoring Conference, March 25-29, 2019, Denver, CO

Levitt, J., Degnan J., Flanagan S., Jurgens,B., 2019, Arsenic variability and groundwater age in three water supply wells in southeast New Hampshire, Geoscience Frontiers, https://doi.org/10.1016/j.gsf.2019.01.002

Degnan, J., Lindsey, B.D.,  & Levitt, J., 2018, The Relation of Occurrence Of Geogenic Contaminants To Recharge Age, Redox Conditions, and Distance Along Flow-Paths in Atlantic and Gulf Coastal Plain Aquifers, Eastern USA. GSA 2018 Northeastern Section Meeting, 18-20 March 2018, Burlington, VT

Stanton, J.S., Anning, D.W., Brown, C.J., Moore, R.B., McGuire, V.L., Qi, S.L., Harris, A.C., Dennehy, K.F., McMahon, P.B., Degnan, J.R., and Böhlke, J.K., 2017, Brackish groundwater in the United States: U.S. Geological Survey Professional Paper 1833, 185 p., https://doi.org/10.3133/pp1833.

Degnan, J. R.,  Mack, T. J., Brandon, B., Harte, P. T., Daly, M., and Hull, R., 2016, Preparing a preliminary fractured bedrock conceptual model to address water quality concerns using existing site and regional scale information: approaches and case studies, Conference Paper · January 2016, DOI: 10.1130/abs/2016NE-272644 · Conference: 51st Annual Northeastern GSA Section Meeting

Flanagan, S., Degnan, J. R., Caldwell, J., Levitt, J., Kiah, R., and Ayotte, J., 2016, Temporal variability of arsenic in groundwater at three wells in New Hampshire, 10th National Monitoring Conference, Tampa, FL, May 2-6, 2016

Brayton, Michael J.; Cruz, Roberto M.; Myers, Luke; Degnan, James R.; Raffensperger, Jeff P., 2015. Hydrogeologic framework, hydrology, and refined conceptual model of groundwater flow for Coastal Plain aquifers at the Standard Chlorine of Delaware, Inc. Superfund Site, New Castle County, Delaware, 2005-12. U.S. Geological Survey Scientific Investigations Report 2014-5224, vii, 61 p.

Walker, Charles W.; Degnan, James R.; Brayton, Michael J.; Cruz, Roberto M.; Lorah, Michelle M., 2015. Surface geophysics and porewater evaluation at the Lower Darby Creek Area Superfund Site, Philadelphia, Pennsylvania, 2013. U.S. Geological Survey Data Series 927, Report: iv, 6 p.; Appendixes 1-3

Degnan, J.R., Bohlke, J.K., Pelham, Krystle, Langlais, D.M. and Walsh, G.J., 2015, ISOTOPIC FINGERPRINTING OF NITRATE SOURCES IN GROUNDWATER NEAR HIGHWAY BLASTING SITES: Northeastern Section, Geological Society of America, March 23-25, 2015, Bretton Woods, NH [Link]

James R. Degnan, John Karl Bohlke, Krystle Pelham, David M. Langlais, and Gregory J. Walsh, 2015, Identification of groundwater nitrate contamination from explosives used in road construction: Isotopic, chemical, and hydrologic evidence: Environmental Science and Technology, doi:10.1021/acs.est.5b03671. [Link]

Stanton, J. S., Anning, D. W., McGuire, V. L., Moore, R. B., Degnan, J. R. 2015, A National Assessment of Brackish Groundwater [Abstract], in Salinity, Scarcity, & Solutions, Multi-State Salinity Coalition, Proceedings of the 2015 Annual Salinity Summit, February 19-20, 2015, Las Vegas, Nevada,  Abstracts 1 p.

Degnan, J.R., Barker, Gregory, Olson, Neil, and Wilder, Leland, 2014, Geophysical logging of bedrock wells for geothermal gradient characterization in New Hampshire, 2013: U.S. Geological Survey Data Series 823, 19 p., at http://dx.doi.org/10.3133/ds823[Link]

Degnan, James R.; Harte, Philip T., 2013. Hydrogeologic framework, arsenic distribution, and groundwater geochemistry of the glacial-sediment aquifer at the Auburn Road landfill superfund site, Londonderry, New Hampshire. U.S. Geological Survey Scientific Investigations Report 2013-5123, vii, 58 p. [Link]

Chalmers, A.T., Marvin-DiPasquale, M.C., Degnan, J.R., Coles, J.R., Agee, J.L., and Luce, Darryl, 2013, Characterization of mercury contamination in the Androscoggin River, Coos County, New Hampshire: U.S. Geological Survey Open-File Report 2013–1076, 56 p., http://pubs.usgs.gov/of/2013/1076/. [Link]

Degnan, J.R., Barker, Gregory, Olson, Neil, and Wilder, Leland, 2013, Temperature logging of groundwater in wells to measure bedrock geothermal gradients in New Hampshire, 2012: Northeastern Section, Geological Society of America, March 18-20, 2013, Bretton Woods, NH, [AVAILABLE at http://nh.water.usgs.gov/Publications/abstracts/jrd_gsa13.htm]. [Link]

Harte, Philip T.; Smith, Thor E.; Williams, John H.; Degnan, James R., 2012. Time series geophysical monitoring of permanganate injections and in situ chemical oxidation of PCE, OU1 area, Savage Superfund Site, Milford, NH, USA. Elsevier , 17 p. [Link]

Degnan, James; Barker, Gregory; Olson, Neil; Wilder, Leland, 2012. Temperature logging of groundwater in bedrock wells for geothermal gradient characterization in New Hampshire, 2012. U.S. Geological Survey Data Series 728, vi; 19 p.; Temperature and Gamma Geophysical Logs [Link]

Degnan, J.R., and Harte, P.T., 2012, Characterization of leachate distribution, redox conditions, and the persistence of arsenic in groundwater at the Auburn Rd. landfill site, Londonderry, New Hampshire: Northeastern Section, Geological Society of America, March 18-20, 2012, Hartford, CT, [ABSTRACT AVAILABLE at http://nh.water.usgs.gov/Publications/abstracts/jrd_gsa12.htm]. [Link]

Mack, Thomas J.; Belaval, Marcel; Degnan, James R.; Roy, Stephen J.; Ayotte, Joseph D., 2011. Geophysical and flow-weighted natural-contaminant characterization of three water-supply wells in New Hampshire. U.S. Geological Survey Open-File Report 2011-1019, vi, 20 p. [Link]

Degnan, James R.; Teeple, Andrew P.; Johnston, Craig M.; Marvin-DiPasquale, Mark C.; Luce, Darryl, 2011. Geophysical bed sediment characterization of the Androscoggin River from the former Chlor-Alkali Facility Superfund Site, Berlin, New Hampshire, to the state border with Maine, August 2009. U.S. Geological Survey Scientific Investigations Report 2011-5158, vii, 27 p. [Link]

Degnan, J.R., Brayton, M.J., and Cruz, R.M., 2011, Surface geophysical surveys used to image electrically conductive groundwater contaminants and lithology in the Atlantic Coastal Plain of Delaware: National Ground Water Association, 2011 Ground Water Summit and 2011 Ground Water Protection Council Spring Meeting, May 1-5, 2011, Baltimore, MD, [ABSTRACT AVAILABLE at http://nh.water.usgs.gov/Publications/abstracts/jrd_ngwa11.htm]. [Link]

Degnan, James R.; Brayton, Michael J., 2010. Preliminary Investigation of Paleochannels and Groundwater Specific Conductance using Direct-Current Resistivity and Surface-Wave Seismic Geophysical Surveys at the Standard Chlorine of Delaware, Inc., Superfund Site, Delaware City, Delaware, 2008. U.S. Geological Survey Open-File Report 2010-1058, viii, 27 p. [Link]

Harte, P.T., Mongeon, Robin, Goehlert, Richard, Smith, T. E., and Degnan, J.R., 2010, Monitoring of In Situ Chemical Oxidation (ISCO) Treatment with Time-Series Geophysical Surveys, Savage Municipal Water Supply Superfund Site, Milford, New Hampshire, at the International Conference on Remediation of Chlorinated and Recalcitrant Compounds, Monterey, CA, May 24-27, 2010 [ABSTRACT AVAILABLE ON-LINE at http://nh.water.usgs.gov/Publications/abstracts/harte_battelle_ChlorAbs_...[Link]

Teeple, A.P.; Degnan, J.R., Kress, W.H., Woodward, D.G.; Jiama, M.; Osman, A.H.; Shalli, R.S.; 2009, Volume and location of sand containing petroleum production by-products using surface geophysical methods at three central degassing stations in Abu Dhabi, United Arab Emirates: U.S. Geological Survey Administrative Report 2009‐001.

Degnan, James R.; Walsh, Gregory J.; Flanagan, Sarah; Burruss, Robert C., 2008. Bedrock, Borehole, and Water-Quality Characterization of a Methane-Producing Water Well in Wolfeboro, New Hampshire. Geological Survey (U.S.) Open-File Report 2008-1333, Available online and on CD-ROM [Link]

Ayotte, J.D., Argue, D.M., McGarry, F.J., Degnan, J.R., Hayes, Laura, Flanagan, S.M., Helsel, D.R., 2008, Methyl tert-Butyl Ether (MTBE) in Public and Private Wells in New Hampshire: Occurrence, Factors, and Possible Implications: Environmental Science and Technology, v. 42, no. 3, p. 677-684 [REPORT AVAILABLE ONLINE at http://pubs.acs.org/cgi-bin/abstract.cgi/esthag/asap/abs/es071519z.html]. [Link]

Pierce, Herbert A.; Walsh, Gregory J.; Burruss, Robert C.; Degnan, James R., 2007. Borehole Characterization of a Methane-Yielding Bedrock Well, Tyngsborough, Massachusetts. Geological Survey (U.S.) Open-File Report 2007-1399, Available online or on DVD-ROM; Report: iv, 13 p. [Link]

Degnan, James R.; Clark, Stewart F., Jr.; Harte, Philip T.; Mack, Thomas J., 2005. Geology and preliminary hydrogeologic characterization of the cell-house site, Berlin, New Hampshire, 2003-04. Scientific Investigations Report 2004-5282, 65 p. [Link]

Degnan, J.R., Clark, S.F., Jr., and Harte, P.T., 2004, Integration of geophysics, geologic mapping and water-level monitoring to characterize the hydrogeology of a fractured bedrock site in Berlin, New Hampshire, in Symposium on the application of geophysics to engineering and environmental problems, Colorado Springs, Colo., February 22-26, 2004, Proceedings: Environmental and Engineering Geophysical Society, ENVO5, p. 759-769 [PAPER AVAILABLE ONLINE at http://nh.water.usgs.gov/publications/2004/degnan_ENV05.pdf]. [Link]

Harte, P.T., Degnan, J.R., Clark, S.F. Jr., Bastien, M., Mack, T.J., 2004, Characterization of fractured rock to develop conceptual models of ground-water flow and transport of mercury and measuring success in remediation; September 13-15, Portland Maine; p 551-552. [ABSTRACT AVAILABLE ON-LINE at http://nh.water.usgs.gov/Publications/abstracts/harte_berlin-abstract.pd...[Link]

Roseen, Robert M.; Degnan, J. R.; Brannaka, L. K.; Ballestero, T. P.; Mack, T. J., 2003. Approximate potentiometric surface of the bedrock aquifer at Great Bay, southeastern New Hampshire, 2001. Open-File Report 2003-278, 1 map ; 56 x 56 cm., on sheet 69 x 81 cm., folded in envelope 24 x 20 cm. [Link]

Mack, Thomas J.; Degnan, James R., 2003. Geophysical characterization of fractured bedrock at Site 8, former Pease Air Force Base, Newington, New Hampshire. Open-File Report 2002-279, 27 p. [Link]

Moore, Richard Bridge; Schwartz, Gregory E.; Clark, Stewart F., Jr.; Walsh, Gregory J.; Degnan, James R., 2002. Factors related to well yield in the fractured-bedrock aquifer of New Hampshire. Professional Paper 1660, 51 p., 2 plates in pocket: ill. (some col.), maps (some col.) ; 28 cm. [Link]

Degnan, James R.; Clark, Stewart F., Jr., 2002. Fracture-correlated lineaments at Great Bay, southeastern New Hampshire. Open-File Report 2002-13, iv, 14 p. : ill., maps (1 col.) ; 28 cm., 1 over-size sheet, scale 1:24,000 (1 inch = 2,000 feet). [Link]

Degnan, J.R., Clark, S.F., Jr., and Moore, R.B., 2002, Lineament and surface geophysical evidence of bedrock-fracture zones in southern New Hampshire, in Fractured-Rock Aquifers 2002 Conference, Denver, Colo., March 13-15, 2002, Proceedings: National Ground Water Association, U.S. Environmental Protection Agency, U.S. Geological Survey, p. 172-175. [AVAILABLE ONLINE AT http://nh.water.usgs.gov/Publications/2002/jrd_ngwa02co.htm]. [Link]

Mack, T.J., Degnan, J.R., and Moore, R.B., 2002, Regional simulation of ground-water flow in a fractured bedrock aquifer, New Hampshire, in Fractured-Rock Aquifers 2002 Conference, Denver, Colo., March 13-15, 2002, Proceedings: National Ground Water Association, U.S. Environmental Protection Agency, U.S. Geological Survey, p. 147-150. [AVAILABLE ONLINE AT http://nh.water.usgs.gov/Publications/2002/tjm_ngwa02co.htm]. [Link]

Degnan, J.R., and Moore, R.B., 2002, Integrated approaches to water resources exploration in fracture-bedrock aquifers, in 2002 National Ground Water Association Northeast Focus Ground Water Conference, National Ground Water Association proceedings, October 3-4, 2002, Burlington, Vt., p. 120 [ABSTRACT AVAILABLE ON-LINE AT http://nh.water.usgs.gov/Publications/abstracts/jrd_ngwa02vt.htm]. [Link]

Moore, R.B., Schwarz, G.E., Clark, S.F. Jr., Walsh, G.J., Degnan, J.R., and Mack, T.J., 2002, Well-yield probabilities related to site and well characteristics in the fractured-bedrock aquifer of New Hampshire, in Fractured-Rock Aquifers 2002 Conference, Denver, Colo., March 13-15, 2002, Proceedings: National Ground Water Association, U.S. Environmental Protection Agency, U.S. Geological Survey, p. 37. [ABSTRACT AVAILABLE ON-LINE AT http://nh.water.usgs.gov/Publications/abstracts/rbm_ngwa02co.htm]. [Link]

Degnan, James R.; Moore, Richard Bridge; Mack, Thomas J., 2001. Geophysical investigations of well fields to characterize fractured-bedrock aquifers in southern New Hampshire. Water-Resources Investigations Report 2001-4183, v, 54 p. : ill. (some col.), maps (some col.) ; 28 cm. [Link]

Degnan, J.R., and Moore, R.B., 2001, Identifying fracture zones in crystalline bedrock aquifers of New Hampshire using surface geophysical techniques, in Conference Ground Water Expo, Nashville, Tenn., December 7-9, 2001, Abstracts with Programs: National Ground Water Association [ABSTRACT AVAILABLE ON-LINE AT http://nh.water.usgs.gov/Publications/abstracts/jrd_ngwa01.htm]. [Link]

Moore, R.B., Schwarz, G.E., Clark, S.F. Jr., Walsh, G.J., Degnan, J.R., and Mack, T.J., 2001, Relating well yields to site characteristics in fractured bedrock of New Hampshire, in Geological Society of America, annual meeting and exposition, Boston, Mass., November 5-8, 2001, Abstracts with Program: Boston, Mass., Geological Society of America, at http://gsa.confex.com [ABSTRACT AVAILABLE ON-LINE at https://gsa.confex.com/gsa/2001AM/finalprogram/abstract_27523.htm] [Link]

Ferguson, E. W.; Marcoux, G. J.; Degnan, J. R.; Clark, S. F., Jr.; Short, H. A.; Moore, R. B., 1999. Lineament map of Area 12 of the New Hampshire bedrock aquifer assessment, northwestern New Hampshire. Open-File Report 99-89, 1 over-size sheet, scale 1:48,000 (1 inch = 4,000 feet.)

Ferguson, E. W.; Marcoux, G. J.; Degnan, J. R.; Clark, S. F., Jr.; Moore, R. B., 1999. Lineament map of Area 13 of the New Hampshire bedrock aquifer assessment, northern New Hampshire. Open-File Report 99-90, 1 over-size sheet, scale 1:48,000 (1 inch = 4,000 feet).

Ferguson, E. W.; Marcoux, G. J.; Degnan, J. R.; Clark, S. F., Jr.; Moore, R. B., 1999. Lineament map of Area 14 of the New Hampshire bedrock aquifer assessment, northernmost New Hampshire. Open-File Report 99-91, 1 over-size sheet, scale 1:48,000 (1 inch = 4,000 feet).

Degnan, J. R., 1998. Level II scour analysis for Bridge 24 (BERLTH00600024) on Town Highway 60, crossing Cox Brook, Berlin, Vermont. Open-File Report 98-57, 50 p.

Degnan, J. R., 1998. Level II scour analysis for Bridge 29 (JAMATH00300029) on Town Highway 30, crossing Ball Mountain, Jamaica, Vermont. Open-File Report 98-88, 47 p.

Moore, R.B., Clark, S.F. Jr., Ferguson, E.W., Marcoux, G.J., and Degnan, J.R., 1998, New Hampshire bedrock aquifer assessment: Correlating yields from 18,000 wells with geologic features, in Northeast Focus Ground Water Conference, Burlington, Vt., October 20-21, 1998, Abstracts with Program: Burlington, Vt., National Ground Water Association, p. 18. [ABSTRACT]

Wild, E. C.; Degnan, J. R., 1997. Level II scour analysis for Bridge 23 (WOLCTH00130023) on Town Highway 13, crossing the Wild Branch of the Lamoille River, Wolcott, Vermont. Open-File Report 97-394, 50 p.

Degnan, J. R., 1997. Level II scour analysis for Bridge 31 (BRISTH00030031) on Town Highway 3, crossing the New Haven River, Bristol, Vermont. Open-File Report 97-628, 47 p.

Flynn, R. H.; Degnan, J. R., 1997. Level II scour analysis for Bridge 31 (HUNTTH00220031) on Town Highway 22, crossing Brush Brook, Huntington, Vermont. Open-File Report 97-673, 49 p.

Burns, R. L.; Degnan, J. R., 1997. Level II scour analysis for Bridge 33 (HUNTTH00220033) on Town Highway 22, crossing Brush Brook, Huntington, Vermont. Open-File Report 97-664, 50 p.

Boehmler, E. M.; Degnan, J. R., 1997. Level II scour analysis for Bridge 39 (LOWETH00080039) on Town Highway 8, crossing Potter Brook, Lowell, Vermont. Open-File Report 97-629, 50 p.

Olson, S. A.; Degnan, J. R., 1997. Level II scour analysis for Bridge 42 (BENNCYSCHL0042) on School Street, crossing Walloomsac River, Bennington, Vermont. Open-File Report 97-208, 50 p.

Education

1993 - 1997          University of New Hampshire    Durham, NH

Bachelor of Science in Geology

1995 –Budapest Scientist and Engineer Exchange Program          UNH Earth Science Club

Related coursework:

Applied Geophysics   Field methods    Fluvial hydrology    Geological Oceanography    Geomorphology Geotechnics                Glacial Geology       Mineralogy               Introduction to Oceanography    Optical Mineralogy and Petrography       Paleontology and Biostratigraphy      Principles of Hydrology Structural geology   Surveying I & II

Related graduate coursework:

Ground water hydrology    Vadose zone hydrology     Introduction to groundwater modeling

Selected USGS training:

         DC Resistivity, Branch of Geophysics
         Geosoft Oasis Montaj
         Groundwater Geochemistry
         HVSR Passive Seismic Systems, Branch of Geophysics
         ARC/INFO
         Geophysics for Hydrological and Environmental Studies
         Multichannel analysis of surface waves, Branch of Geophysics
         Statistical Methods for Environmental Data Analysis
         Water Quality Field Methods

Other Training:

OSHA 40 Hour Hazardous Waste Site Worker and 8 hour annual refresher courses