Resume/CV

Contact Info

Jeffrey D. Walker, PhD
Walker Environmental Research, LLC
Brunswick, ME
http://www.walkerenvres.com
jeff@walkerenvres.com

Education

2014
Ph.D. Environmental and Water Resources Engineering
Tufts University, Medford, MA
Interactive Web Applications for Environmental Modeling
Advisor: Steve Chapra
Committee: Alva Couch, Pete Shanahan, Rich Vogel
2007
M.Eng. Environmental and Water Resources Engineering
Massachusetts Institude of Technology, Cambridge, MA
Modeling the Fate and Transport of Nitrogen and Sediment within Coastal Embayments on St. John, U.S. Virgin Islands
Advisors: Eric Adams, Pete Shanahan
2006
B.S. Science of Earth Systems
Cornell University, Ithaca, NY
The Whole Ecosystem Metabolism of a Shallow Temperate Estuary
Advisors: Bob Howarth, Joe Yavitt

Professional Experience

2016 – present
Walker Environmental Research, LLC
Founder and Principal
2010 – 2016
Independent Consultant
Environmental and Water Resources Engineer
2007 – 2010
CDM Smith
Environmental and Water Resources Engineer

Academic Experience

2015 – 2016
UMass Amherst, Dept. Environmental Conservation
Post-doctoral Research Associate
2014 – 2015
UMass Amherst, Dept. Civil & Environmental Engineering, HydroSystems Research Group
Post-doctoral Research Associate

Peer-Reviewed Publications

2016
Asarian, J. E., and Walker, J.D. Long-Term trends in streamflow and precipitation in northwest California and southwest Oregon, 1953-2012. Journal of the American Water Resources Association, 52(1): 241-261. DOI: 10.1111/1752-1688.12381
2015
Whateley, S., Walker, J.D., and Brown, C. A web-based screening model for climate risk to water supply systems in the northeastern United States. Environmental Modelling & Software, 73: 64-75. DOI: 10.1016/j.envsoft.2015.08.001
2014
Walker, J.D., and Chapra, S.C. A client-side web application for interactive environmental simulation modeling. Environmental Modelling & Software 55: 49-60. DOI: 10.1016/j.envsoft.2014.01.023
2013
Howarth, R.W., Hayn, M., Foreman, K., Marino, R., McGlathery, K., Berg, P., Giblin, A., and Walker, J.D. Metabolism of a nitrogen-enriched coastal marine lagoon during the summertime. Biogeochemistry 118(1-3): 1-20. DOI: 10.1007/s10533-013-9901-x
2007
Walker, J.D., Walter, M.T., Parlange, J.-Y., Rose, C.W., Tromp-van Meerveld, H.J., Gao, B., and Cohen, A.M. Reduced raindrop-impact driven soil erosion by infiltration. Journal of Hydrology 342(3-4): 331-335. DOI: 10.1016/j.jhydrol.2007.06.003
2007
Parasiewicz, P. and Walker, J.D. Comparison of MesoHABSIM with two micro-habitat models (PHABSIM and HARPHA). River Research and Applications 23(8): 904-923. DOI: 10.1002/rra.1043

Reports

2016
Walker, J. D., J. Kann, and W.W. Walker. Malden River: Exploratory Water Quality Data Prepared for the Mystic River Watershed Association by Jeffrey D. Walker PhD, Walker Environmental Research LLC. August 9, 2016.
2015
Walker, J. D., J. Kann, and W.W. Walker. Spatial and temporal nutrient loading dynamics in the Sprague River Basin, Oregon. Prepared by Aquatic Ecosystem Sciences, J. D. Walker, and W. W. Walker for the Klamath Tribes Natural Resources Department. 73p. + appendices.
2015
Walker, J. D., and Brown, C. An R Package and Web Application for Performing a Climate Stress Test. Prepared for U.S. Army Corps of Engineers. August 2015.
2014
Walker, W.W., and Walker, J.D. Trends in Total Phosphorus Concentration and Flow at Monitoring Sites Within and Upstream of Everglades National Park. Prepared for U.S. Department of the Interior.
2013
Walker, W.W., and Walker, J.D. Analysis of Fecal Coliform Data from Onondaga Lake Tributaries. Prepared for Upstate Freshwater Institute and Onondaga County Department of Water Environment Protection.
2012
Walker, W.W., J. D. Walker, and J. Kann. Evaluation of Water and Nutrient Balances for the Upper Klamath Lake Basin in Water Years 1992-2010. Technical Report to the Klamath Tribes Natural Resources Department, Chiloquin, OR. 50 pp +Appendices.
2012
Beresin, G., Crossley, L., Gareau, G., Jiang, Y., Olson, K., Sexton, A., Walker, J., Wu, R., and Zhao, S. Stormwater Management in the Aberjona River. Report for the 2012 Water: Systems, Science + Society (WSSS) Practicum. Prepared for The Mystic River Watershed Association and Tufts University Department of Urban + Environmental Policy + Planning. May 2012.
2011
Walker, W.W., and Walker, J.D. Trends in Onondaga Lake Nearshore Monitoring Data Onondaga Lake Ambient Monitoring Program – 2011 Report. Prepared for Ecologic, LLC & Onondaga County Department of Water Environment Protection.

Conference Proceedings

2014
Walker, J.D., and Chapra, S.C. Interactive and web-based approaches for environmental modeling. 2014 UCOWR/NIWR/CUAHSI Annual Conference: Water Systems, Science, and Society Under Global Change. Medford, MA. June 18-20, 2014.
2011
Starosta, L.E., Westphal, K.S., and Walker, J.D. Simple Management Tools to Reduce Water Pumping Based on Hydrologic Probabilities and Supply Shortage Risk Quantification. Conference Proceedings of the ASCE and EWRI World Environment and Water Resources Congress 2011: Bearing Knowledge for Sustainability. Palm Springs, CA. May 22, 2011. DOI: 10.1061/41173(414)322
2009
Walker, J.D., Rees, P.S. and Walsh, T.K. The Importance of Instream Hydraulics in River Water Quality Models: Lessons from the Blackstone River. Oral presentation and publication in the Conference Proceedings of the ASCE and EWRI World Environment and Water Resources Congress 2009: Great Rivers. Kansas City, MO. May 19, 2009. DOI: 10.1061/41036(342)296
2009
Lefkowitz, J., Westphal, K., Walker, J., and Mercer, G. The Economic and Environmental Significance of Nonpoint Source Abatement in Large Watersheds. Conference Proceedings of the ASCE and EWRI World Environment and Water Resources Congress 2009: Great Rivers. Kansas City, MO. May 19, 2009. DOI: 10.1061/41036(342)257

Conference Posters

2012
Walker, J., Beresin, G., Crossley, L., Jiang, Y., Olson, K., Zhao, S., Gareau, G., Sexton, A., Wu, R., Russell, R., and Vogel, R. A GIS-based Approach to Identify Priority Locations for Stormwater Best Management Practices in the Aberjona River Watershed. The 2012 WSSS Interdisciplinary Water Symposium, The Glass Half Full: Valuing Water in the 21st Century. Awarded First Prize in Student Poster Competition. [pdf]

Clients

2016 – present
John Durant, PE, PhD and EnviroInsite, LLC under contract to MA Dept. of Public Health
2016 – present
U.S. Geological Survey, Northern Rocky Mountain Science Center
2012 – present
Mystic River Watershed Association
2010 – present
William W Walker, Jr, PhD and Aquatic Ecosystem Sciences, LLC under contract to U.S. Dept. of Justice
2014 – 2016
Kier Associates under contract to National Marine Fisheries Service
2015
CDM Smith
2015
South Fork Research
2014 – 2015
Aquatic Ecosystem Sciences under contract to Klamath Tribes Dept. of Natural Resources
2014 – 2015
U.S. Geological Survey, Leetown Science Center
2011 – 2015
William W Walker, Jr, PhD under contract to Onondaga County Dept. of Water Environment Protection
2013 – 2014
Riverbend Sciences under contract to National Oceanic and Atmospheric Administration
2011 – 2012
William W. Walker, Jr., PhD and Aquatic Ecosystem Sciences under contract to R2 Resource Consultants and U.S. Bureau of Indian Affairs

Professional Activities

2015 – present
Maine Healthy Beaches Technical Advisory Committee (TAC)

Awards & Honors

2014
Littleton Award, Tufts University, Dept. of Civil & Environmental Engineering
2012
First Prize for Student Poster Competition, WSSS Symposium
Shahbazi Public Service Fellowship, Tufts University
2010
Provost Fellowship, Tufts University
Honorable Mention, Graduate Research Fellowship Program, NSF
2006
M.Eng. Fellowship, MIT Dept. of Civil & Environmental Engineering
Distinction in Research, Cornell University, College of Agriculture and Life Sciences