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ARS Home » Northeast Area » University Park, Pennsylvania » Pasture Systems & Watershed Management Research » People & Locations » Gordon Folmar
Gordon J Folmar
Pasture Systems & Watershed Management Research
Hydrologist

Phone: (814) 863-8763
Fax: (814) 863-0935

CURTIN ROAD, BUILDING 3702
UNIVERSITY PARK, PA 168023702

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Groundwater contributions of flow and nitrogen in a headwater agricultural watershed Reprint Icon - (Peer Reviewed Journal)
Redder, B., Kennedy, C.D., Buda, A.R., Folmar, G.J., Boyer, E.W. 2021. Groundwater contributions of flow and nitrogen in a headwater agricultural watershed. Hydrological Processes. 35(5):e14179. https://doi.org/10.1002/hyp.14179.
Examining sources and pathways of phosphorus transfer in a ditch-drained field. Reprint Icon - (Peer Reviewed Journal)
Mosesso, L., Buda, A.R., Collick, A.S., Kennedy, C.D., Folmar, G.J. 2021. Examining pathways of phosphorus transfer in a ditch-drained field with concentration-discharge relationships and isotope hydrograph separation. Journal of Environmental Quality. 50(3):680-693. https://doi.org/10.1002/jeq2.20226.
Electrical monitoring of saline tracers to assess subsurface hydrological connectivity in a flat ditch-drained field Reprint Icon - (Peer Reviewed Journal)
Robinson, J., Buda, A.R., Collick, A., Shober, A., Ntarlagiannis, D., Bryant, R.B., Folmar, G.J., Andres, S., Slater, L. 2020. Electrical monitoring of saline tracers to assess subsurface hydrological connectivity in a flat ditch-drained field. Hydrological Processes. 586:124862. https://doi.org/10.1016/j.jhydrol.2020.124862.
Urea fluctuations in stream baseflow across land cover gradients and seasons in a coastal plain river system Reprint Icon - (Peer Reviewed Journal)
Tzilkowski, S.S., Buda, A.R., Boyer, E.W., Bryant, R.B., Kleinman, P.J., Kennedy, C.D., Allen, A.L., Folmar, G.J., May, E.B. 2018. Urea fluctuations in stream baseflow across land cover gradients and seasons in a coastal plain river system. Journal of the American Water Resources Association. 55(1):228-246. https://doi.org/10.1111/1752-1688.12716.
Long-term trends in climate, hydrology, and water quality in a central Pennsylvania watershed: more grazing? - (Abstract Only)
Development of field-scale lysimeters to assess management impacts on runoff Reprint Icon - (Peer Reviewed Journal)
Duncan, E., Kleinman, P.J., Folmar, G.J., Saporito, L.S., Feyereisen, G.W., Buda, A.R., Vitko, L., Collick, A., Drohan, P., Lin, H., Bryant, R.B., Beegle, D. 2017. Development of field-scale lysimeters to assess management impacts on runoff. American Society of Agricultural and Biological Engineers. 60:419-429. https://doi.org/10.13031/trans.11901.
Declining atmospheric sulfate deposition in a small agricultural watershed in central Pennsylvania, USA - (Peer Reviewed Journal)
Elkin, K.R., Veith, T.L., Lu, H., Goslee, S.C., Buda, A.R., Collick, A.S., Folmar, G.J., Kleinman, P.J., Bryant, R.B. 2016. Declining atmospheric sulfate deposition in a small agricultural watershed in central Pennsylvania, USA. Agricultural and Environmental Letters. 1:160039. doi:10.2134/ael2016.09.0039.
Imaging hydrological processes in headwater riparian seeps with time-lapse electrical resistivity - (Peer Reviewed Journal)
Williams, M.R., Buda, A.R., Singha, K., Folmar, G.J., Elliott, H.A., Schmidt, J.P. 2016. Imaging hydrological processes in headwater riparian seeps with time-lapse electrical resistivity. Groundwater. 55(1):136-148. doi:10.1111/gwat.12461.
Long-term trends in climate and hydrology in an agricultural, headwater watershed of central Pennsylvania, USA - (Peer Reviewed Journal)
Lu, H., Bryant, R.B., Buda, A.R., Collick, A.S., Folmar, G.J., Kleinman, P.J. 2015. Long-term trends in climate and hydrology in an agricultural, headwater watershed of central Pennsylvania, USA. Journal of Hydrology. 4(B):713-731. doi: 10.1016/j.ejrh.2015.10.004.
Long-term trends in climate and hydrology in an agricultural headwater watershed of central Pennsylvania, USA - (Proceedings)
Bryant, R.B., Lu, H., Elkin, K.R., Buda, A.R., Collick, A.S., Folmar, G.J., Kleinman, P.J. 2016. Long-term trends in climate and hydrology in an agricultural headwater watershed of central Pennsylvania, USA. American Water Resources Association Conference Proceedings,4:713-731.
Using the Sacramento soil moisture accounting model to provide short-term forecasts of surface runoff for daily decision making in nutrient management - (Abstract Only)
Buda, A.R., Reed, S.M., Moser, C.L., Folmar, G.J., Kleinman, P.J., Bryant, R.B., Knight, P.G., Miller, D., Bills, B., Ahnert, P., Drohan, P. 2014. Using the Sacramento soil moisture accounting model to provide short-term forecasts of surface runoff for daily decision making in nutrient management. American Water Resources Association Conference Proceedings. P. 1.
Applying hydropedology to nutrient management in the northeastern US: lessons learned from the Mahantango Creek Experimental Watershed - (Abstract Only)
Buda, A.R., Williams, M.R., Folmar, G.J., Lin, H., Vitko, L.F., Kleinman, P.J., Bryant, R.B., Drohan, P.J. 2013. Applying hydropedology to nutrient management in the northeastern US: lessons learned from the Mahantango Creek Experimental Watershed [Abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 257-266.
Phosphorus transport by surface and subsurface flow pathways in an upland agricultural watershed - (Abstract Only)
Buda, A.R., Kleinman, P.J., Bryant, R.B., Drohan, P.J., Folmar, G.J., Dewalle, D.R. 2012. Phosphorus transport by surface and subsurface flow pathways in an upland agricultural watershed[abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Poster No 335.
Using flue gas desulfurization gypsum to remove dissolved phosphorus from agricultural drainage waters - (Peer Reviewed Journal)
Bryant, R.B., Buda, A.R., Kleinman, P.J., Church, C., Saporito, L.S., Folmar, G.J., Bose, S., Allen, A.L. 2012. Using flue gas desulfurization gypsum to remove dissolved phosphorus from agricultural drainage waters. Journal of Environmental Quality. 41(3):664-671. DOI: 10.2134/jeq2011.0294.
Fragipan controls on nitrogen loss by surface and subsurface flow pathways in an upland agricultural watershed - (Abstract Only)
Buda, A.R., Kleinman, P.J.A., Bryant, R.B., Schmidt, J.P., Drohan, P.J., Folmar, G.J., Dewalle, D.R. 2011. Fragipan controls on nitrogen loss by surface and subsurface flow pathways in an upland agricultural watershed [abstract]. American Geophysical Union. Paper No. B11C-0510.
U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: long-term precipitation database - (Peer Reviewed Journal)
Buda, A.R., Veith, T.L., Folmar, G.J., Feyereisen, G.W., Bryant, R.B., Church, C., Schmidt, J.P., Dell, C.J., Kleinman, P.J.A. 2011. U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: long-term precipitation database. Water Resources Research. 47. DOI: 10.1029/2010WR010058.
U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: long-term stream discharge database - (Peer Reviewed Journal)
Buda, A.R., Feyereisen, G.W., Veith, T.L., Folmar, G.J., Bryant, R.B., Church, C., Schmidt, J.P., Dell, C.J., Kleinman, P.J.A. 2011. U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: long-term stream discharge database. Water Resources Research. 47. DOI: 10.1029/2010WR010059.
U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: long-term water quality database - (Peer Reviewed Journal)
Church, C., Veith, T.L., Folmar, G.J., Buda, A.R., Feyereisen, G.W., Bryant, R.B., Schmidt, J.P., Dell, C.J., Kleinman, P.J.A. 2011. U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: long-term water quality database. Water Resources Research. 47. DOI: 10.1029/2010WR010060.
U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: physiography and history - (Peer Reviewed Journal)
Bryant, R.B., Veith, T.L., Feyereisen, G.W., Buda, A.R., Church, C., Folmar, G.J., Schmidt, J.P., Dell, C.J., Kleinman, P.J.A. 2011. U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: physiography and history. Water Resources Research. 47. DOI: 10.1029/2010WR010056.
Nitrogen loss from a mixed land use watershed as influenced by hydrology and seasons - (Peer Reviewed Journal)
Zhu, Q., Schmidt, J.P., Buda, A.R., Bryant, R.B., Folmar, G.J. 2011. Nitrogen loss from a mixed land use watershed as influenced by hydrology and seasons. Journal of Hydrology. 405(3-4):307-315.
Manure application under winter conditions: Nutrient runoff and leaching losses - (Peer Reviewed Journal)
Williams, M.R., Feyereisen, G.W., Beegle, D.B., Shannon, R.D., Folmar, G.J., Bryant, R.B. 2011. Manure application under winter conditions: Nutrient runoff and leaching losses. American Society of Agricultural and Biological Engineers. 54(3):891-899.
Experimental system for simulating a natural soil temperature profile during freeze-thaw cycles - (Peer Reviewed Journal)
Williams, M.R., Feyereisen, G.W., Folmar, G.J., Lin, H.S. 2010. Experimental system for simulating a natural soil temperature profile during freeze-thaw cycles. Applied Engineering in Agriculture. 26(5):843-848.
Manure Application under Winter Conditions: Nutrient Runoff and Leaching Losses - (Abstract Only)
Williams, M.R., Feyereisen, G.W., Beegle, D.B., Shannon, R.D., Folmar, G.J., Bryant, R.B. 2010. Manure Application under Winter Conditions: Nutrient Runoff and Leaching Losses [poster]. Twenty-fifth Annual Graduate Exhibition. March 26-28, 2010. The Pennsylvania State University, University Park, PA.
Manure Application under Winter Conditions: Nutrient Runoff and Leaching Losses - (Abstract Only)
Williams, M.R., Feyereisen, G.W., Beegle, D.B., Shannon, R.D., Folmar, G.J., Bryant, R.B. 2010. Manure Application under Winter Conditions: Nutrient Runoff and Leaching Losses [poster]. Gamma Sigma Delta Annual Graduate and Undergraduate Research Expo. March 17-18, 2010. The Pennsylvania State University, University Park, PA.
Effect of direct incorporation of poultry litter on phosphorus leaching from coastal plain soils - (Peer Reviewed Journal)
Feyereisen, G.W., Kleinman, P.J., Folmar, G.J., Saporito, L.S., Way, T.R., Church, C., Allen, A.L. 2010. Effect of direct incorporation of poultry litter on phosphorus leaching from coastal plain soils. Journal of Soil and Water Conservation. 65(4):243-251.
Manure Application Under Winter Conditions: Nutrient Runoff and Leaching Losses - (Proceedings)
Williams, M.W., Feyereisen, G.W., Beegle, D.B., Shannon, R.D., Folmar, G.J., Bryant, R.B. 2010. Manure Application Under Winter Conditions: Nutrient Runoff and Leaching Losses [abstract]. American Society of Agricultural and Biological Engineers. Paper No. 1009194.
A Phosphorus Transport Study: Influence of Poultry Litter Application Method on Leaching - (Abstract Only)
Feyereisen, G.W., Kleinman, P.J., Folmar, G.J., Saporito, L.S., Allen, A.L. 2010. A Phosphorus Transport Study: Influence of Poultry Litter Application Method on Leaching [abstract]. American Society of Agricultural and Biological Engineers. Paper No. 1009193.
Development of a lysimeter system to simultaneously study runoff and leaching dynamics - (Peer Reviewed Journal)
Feyereisen, G.W., Folmar, G.J. 2009. Development of a lysimeter system to simultaneously study runoff and leaching dynamics. Transactions of the ASABE. 52(5):1585-1591.
Experimental System for Simulating a Natural Soil Temperature Profile during Freeze-thaw Cycles - (Abstract Only)
Williams, M.R., Feyereisen, G.W., Folmar, G.J. 2009. Experimental System for Simulating a Natural Soil Temperature Profile during Freeze-thaw Cycles. ASABE Annual International Meeting. Paper No. 096281.
Long-term Watershed Database for the Ridge and Valley Physiographic Province: Mahantango Creek Watershed, Pennsylvania, USA - (Abstract Only)
Feyereisen, G.W., Bryant, R.B., Kleinman, P.J., Veith, T. L., Schmidt, J.P., Buda, A. R., Folmar, G.J., Saporito, L.S. 2009. Long-term Watershed Database for the Ridge and Valley Physiographic Province: Mahantango Creek Watershed, Pennsylvania, USA [abstract}. Soil and Water Conservation Society Proceedings. p. 86.
Integrating contributing areas and indexing phosphorus loss from agricultural watersheds - (Peer Reviewed Journal)
Sharpley, A.N., Kleinman, P.J., Heathwaite, A.L., Gburek, W., Weld, J.L., Folmar, G.J. 2008. Integrating contributing areas and indexing phosphorus loss from agricultural watersheds. Journal of Environmental Quality. 37:1488-1496.
PHOSPHORUS LOSS FROM AN AGRICULTURAL WATERSHED AS A FUNCTION OF STORM SIZE - (Peer Reviewed Journal)
Sharpley, A.N., Kleinman, P.J., Heathwaite, A.L., Gburek, W., Folmar, G.J., Schmidt, J.P. 2008. Phosphorus loss from an agricultural watershed as a function of storm size. Journal of Environmental Quality. 37:362-368.
Development of a Lysimeter System to Simultaneously Study Runoff and Leaching Dynamics - (Proceedings)
Feyereisen, G.W., Folmar, G.J. 2008. Development of a Lysimeter System to Simultaneously Study Runoff and Leaching Dynamics. Proceedings of the American Society of Agricultural and Biological Engineers International Meeting. Providence, RI. Paper No. 084073.
Optimum nitrogen rate for corn related to hillslope variability in soil water redistribution ()
Schmidt, J.P., Hong, N., Folmar, G.J., Beegle, D., Lin, H. 2007. Optimum nitrogen rate for corn increases with greater soil water ability. In: Bruulsema, Tom (ed.) Managing Crop Nitrogen for Weather. International Plant Nutrition Institute, Norcross, GA. P. 4.1-4.10.
Dynamics of phosphorus transfers from heavily manured coastal plain soils to drainage ditches - (Peer Reviewed Journal)
Kleinman, P.J., Allen, A.L., Needelman, B.A., Sharpley, A.N., Vadas, P.A., Saporito, L.S., Folmar, G.J., Bryant, R.B. 2007. Dynamics of phosphorus transfers from heavily manured coastal plain soils to drainage ditches. Journal of Soil and Water Conservation. 62(4):225-234.
MULTIPLE METHODS OF RECHARGE ESTIMATION AT A HUMID-REGION FRACTURED ROCK SITE - (Peer Reviewed Journal)
Hepner, C.S., Nimmo, J.R., Folmar, G.J., Gburek, W., Risser, D.W. 2007. Multiple-methods investigation of recharge at a humid-region fractured rock site, Pennsylvania, USA. Hydrogeology Journal [serial online}. Available: http://www.springerlink.com/content/102028/.
COMPARISON OF METHODS FOR ESTIMATING GROUND-WATER RECHARGE AND BASE FLOW AT A SMALL WATERSHED UNDERLAIN BY FRACTURED BEDROCK IN THE EASTERN UNITED STATES ()
Risser, D.W., Gburek, W.J., Folmar, G.J. 2005. Comparison of methods for estimating ground-water recharge and base flow at a small watershed underlain by fractured bedrock in the eastern united states. U.S. Geological Survey Scientific Investigations Report. 31 p.
ACCOUNTING FOR LAND USE CHANGES ON PHOSPHORUS LOSS POTENTIAL USING A PHOSPHORUS INDEX - (Abstract Only)
Weld, J.L., Sharpley, A.N., Folmar, G.J. 2003. Accounting for land use changes on phosphorus loss potential using a phosphorus index [Abstract]. American Society of Agronomy Abstracts. Paper No. 692068.
MODIFICATION OF PHOSPHORUS EXPORT FROM A CATCHMENT BY FLUVIAL SEDIMENT PHOSPHORUS INPUTS - (Peer Reviewed Journal)
McDowell, R.W., Sharpley, A.N., Folmar, G.J. 2003. Modification of phosphorus export from a catchment by fluvial sediment phosphorus inputs. Agriculture Ecosystems and the Environment. 99:187-199.
EFFECT OF SOIL TYPE AND FERTILIZATION LEVEL ON MINERAL CONCENTRATION OF PASTURE: RELATIONSHIP TO RUMINANT PERFORMANCE AND HEALTH - (Abstract Only)
Soder, K.J., Stout, W.L., Gburek, W.J., Folmar, G.J. Effect of Soil Type and Fertilization Level on Mineral Concentration of Pasture: Relationship to Ruminant Performance and Health. Joint Abstracts of the American Dairy Science and Society of Animal Science. Journal of Dairy Science. 2002. v. 85(Suppl.1): Abstract p. 386.
STREAMFLOW CHEMISTRY IN NESTED WATERSHEDS WITHIN THE RIDGE AND VALLEY PHYSIOGRAPHIC PROVINCE - (Peer Reviewed Journal)
Lindsey, B.D., Gburek, W.J., Folmar, G.J. 2001. Watershed scaling effect on base flow nitrate, valley and ridge physiographic province. Journal of the American Water Resources Association. 37(5):1103-1117.
PHOSPHORUS EXPORT FROM AN AGRICULTURAL WATERSHED: LINKING SOURCE AND TRANSPORT MECHANISMS - (Peer Reviewed Journal)
Mcdowell, R.W., Sharpley, A.N., Folmar, G.J. 2001. Phosphorus export from an agricultural watershed: linking source and transport mechanisms. Journal Of Environmental Quality. 30(5):1587-1595.
WATER QUALITY IMPLICATIONS OF DAIRY MANURE APPLIED TO PASTURES IN THE NORTHEAST U.S. - (Peer Reviewed Journal)
Stout, W.L., Weaver, S.R., Gburek, W.J., Folmar, G.J., Schnabel, R.R. 2000. Water quality implications of dairy slurry applied to pastures in the northeast USA. Soil Use and Management. 16:189-193.
DEVELOPING AN INTEGRATED NUTRIENT MANAGEMENT APPROACH FOR LAND-APPLIED MANURE AT A WATERSHED SCALE - (Proceedings)
Sharpley, A.N., Kleinman, P.J., Gburek, W.J., Folmar, G.J. 1999. Developing an integrated nutrient management approach for land applied manure at a watershed scale. Manure Management Conference Proceedings. p. 63-74.
CRITICAL AREAS OF PHOSPHORUS EXPORT FROM AGRICULTURAL WATERSHEDS - (Proceedings)
GIS-BASED DELINEATION OF NUTRIENT SOURCE-AREAS WITHIN UPLAND AGRICULTURAL WATERSHEDS - (Proceedings)
GROUND WATER CONTROLS ON HYDROLOGY AND WATER QUALITY WITHIN RURAL UPLAND WATERSHEDS OF THE CHESAPEAKE BAY BASIN - (Proceedings)