Search Results - "Folmar, Gordon J."
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Using Flue Gas Desulfurization Gypsum to Remove Dissolved Phosphorus from Agricultural Drainage Waters
Published in Journal of environmental quality (01-05-2012)“…High levels of accumulated phosphorus (P) in soils of the Delmarva Peninsula are a major source of dissolved P entering drainage ditches that empty into the…”
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Phosphorus Loss from an Agricultural Watershed as a Function of Storm Size
Published in Journal of environmental quality (01-03-2008)“…Phosphorus (P) loss from agricultural watersheds is generally greater in storm rather than base flow. Although fundamental to P-based risk assessment tools,…”
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Urea Fluctuations in Stream Baseflow across Land Cover Gradients and Seasons in a Coastal Plain River System
Published in Journal of the American Water Resources Association (01-02-2019)“…Urea‐N is a component of bioavailable dissolved organic nitrogen (DON) that contributes to coastal eutrophication. In this study, we assessed urea‐N in…”
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Nitrogen loss from a mixed land use watershed as influenced by hydrology and seasons
Published in Journal of hydrology (Amsterdam) (05-08-2011)“…► Greater NO 3–N concentration and NO 3–N and total N loads were observed in base flow and small storms. ► Non-growing season had greater NO 3–N and total N…”
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Imaging Hydrological Processes in Headwater Riparian Seeps with Time‐Lapse Electrical Resistivity
Published in Ground water (01-01-2017)“…Delineating hydrologic and pedogenic factors influencing groundwater flow in riparian zones is central in understanding pathways of water and nutrient…”
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U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: Physiography and history
Published in Water resources research (01-08-2011)“…The 420 km2 Mahantango Creek Watershed, within the Northern Appalachian Ridges and Valleys Province, is a subwatershed of the Susquehanna River, which flows to…”
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Long-term trends in climate and hydrology in an agricultural, headwater watershed of central Pennsylvania, USA
Published in Journal of hydrology. Regional studies (01-09-2015)“…•Analysis of long-term climatic and hydrologic trends in a small agricultural basin.•Warm and growing seasons extended with a shortening of cold…”
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Comparison of recharge estimates at a small watershed in east-central Pennsylvania, USA
Published in Hydrogeology journal (01-03-2009)“…The common recommendation that recharge should be estimated from multiple methods is sound, but the inherent differences of the methods make it difficult to…”
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U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: Long‐term precipitation database
Published in Water resources research (01-08-2011)“…A long-term precipitation database has been developed by the U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS) Pasture Systems and…”
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Phosphorus Management at the Watershed Scale: A Modification of the Phosphorus Index
Published in Journal of environmental quality (01-01-2000)“…We considered hydrologic and chemical factors controlling P export from a 39.5‐ha mixed land use watershed in east‐central Pennsylvania, focusing our…”
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Multiple-methods investigation of recharge at a humid-region fractured rock site, Pennsylvania, USA
Published in Hydrogeology journal (01-08-2007)“…Lysimeter-percolate and well-hydrograph analyses were combined to evaluate recharge for the Masser Recharge Site (central Pennsylvania, USA). In humid regions,…”
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U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: Long-term water quality database
Published in Water resources research (01-08-2011)“…A long‐term water quality database has been developed by the U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS) Pasture Systems and…”
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Baseflow Nitrate in Relation to Stream Order and Agricultural Land Use
Published in Journal of environmental quality (01-05-2008)“…Management of agricultural nonpoint-source pollution continues to be a challenge because of spatial and temporal variability. Using stream order as an index,…”
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Integrating Contributing Areas and Indexing Phosphorus Loss from Agricultural Watersheds
Published in Journal of environmental quality (01-07-2008)“…Most states in the USA have adopted P Indexing to guide P-based management of agricultural fields by identifying the relative risk of P loss at farm and…”
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U.S. Department of Agriculture Agricultural Research Service Mahantango Creek Watershed, Pennsylvania, United States: Long-term stream discharge database
Published in Water resources research (01-08-2011)“…A long-term streamflow discharge database has been developed by the U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS) Pasture Systems…”
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Declining Atmospheric Sulfate Deposition in an Agricultural Watershed in Central Pennsylvania, USA
Published in Agricultural & environmental letters (2016)“…Core Ideas Sulfate concentrations in an agriculturally dominated watershed respond to atmospheric deposition inputs. Rough budget estimates in the watershed…”
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A groundwater recharge field study: site characterization and initial results
Published in Hydrological processes (15-12-1999)“…A field study site was installed in east‐central Pennsylvania to examine processes controlling groundwater recharge. It was instrumented to monitor climatic…”
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Patterns of contaminant transport in a layered fractured aquifer
Published in Journal of contaminant hydrology (1999)“…We investigated patterns of contaminant transport within the layered and fractured aquifer of a 7.3-km 2 upland agricultural watershed in east-central…”
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WATERSHED SCALING EFFECT ON BASE FLOW NITRATE, VALLEY AND RIDGE PHYSIOGRAPHIC PROVINCE
Published in Journal of the American Water Resources Association (01-10-2001)“…In the East Mahantango Creek watershed, located approximately 30 km north of Harrisburg, PA, the flow and base-flow discharge of water and nitrate nitrogen…”
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WATERSHED SCALING EFFECT ON BASE FLOW NITRATE, VALLEY AND RIDGE PHYSIOGRAPHIC PROVINCE 1
Published in Journal of the American Water Resources Association (01-10-2001)“…A study of stream base flow and NO 3 ‐N concentration was conducted simultaneously in 51 subwatersheds within the 116‐square‐kilometer watershed of East…”
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