A5057878740- Soil and Water Nutrient Dynamics
- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Water resources management and optimization
- Pharmaceutical and Antibiotic Environmental Impacts
- Wastewater Treatment and Nitrogen Removal
- Hydrology and Sediment Transport Processes
- Urban Stormwater Management Solutions
- Pesticide and Herbicide Environmental Studies
- Cryospheric studies and observations
- Fish Ecology and Management Studies
- Forest Management and Policy
- Distributed and Parallel Computing Systems
- Freshwater macroinvertebrate diversity and ecology
- Water Quality and Pollution Assessment
- Soil Carbon and Nitrogen Dynamics
- Pasture and Agricultural Systems
- Agriculture Sustainability and Environmental Impact
- Thermochemical Biomass Conversion Processes
- Environmental DNA in Biodiversity Studies
- Water Treatment and Disinfection
- Irrigation Practices and Water Management
- Per- and polyfluoroalkyl substances research
- Water Quality and Resources Studies
- Simulation Techniques and Applications
Southeast Watershed Research Laboratory
2007-2023
United States Department of Agriculture
2018-2023
Agricultural Research Service
2013-2023
Pennsylvania State University
2006-2023
Government of the United States of America
2023
Waters (United States)
2012-2022
Concern Worldwide US
2020
Management Research Institute
2007-2020
Texas Tech University
2020
Virginia Tech
1999-2020
Watershed models are powerful tools for simulating the effect of watershed processes and management on soil water resources. However, no comprehensive guidance is available to facilitate model evaluation in terms accuracy simulated data compared measured flow constituent values. Thus, objectives this research were to: (1) determine recommended techniques (statistical graphical), (2) review reported ranges values corresponding performance ratings statistics, (3) establish guidelines based...
Recent interest in tracking environmental benefits of conservation practices on agricultural watersheds throughout the United States has led to development U.S. Department Agriculture's (USDA) Conservation Effects Assessment Project (CEAP). The purpose CEAP is assess derived from implementing various USDA programs for cultivated, range, and irrigated lands. Watershed scale, hydrologic simulation models such as Soil Water Tool (SWAT) will be used relate principal source areas contaminants...
Land application of wastewater effluent is beneficial for recharging groundwater aquifers and avoiding direct pollutant discharges to surface waters. However, the fate non-regulated organic pollutants, such as pharmaceuticals personal care products (PPCPs), in reuse systems understudied. Here, a 14-month study (October 2016 through December 2017) was conducted evaluate potential risks seven commonly used PPCPs local treatment plant (WWTP) from 13 monitoring wells at spray-irrigation site...
Acetaminophen (ACT), sulfapyridine (SPY), ibuprofen (IBP) and docusate (DCT) are pharmaceuticals with widespread usage that experience incomplete removal in wastewater treatment systems. While further of these from effluent is desired prior to beneficial reuse, additional technologies often expensive energy intensive. This study evaluated the ability biochar produced cotton gin waste (CG700) walnut shells (WS800) remove four (ACT, SPY, IBP, DCT) aqueous solution. Physico-chemical properties...
With best management practices (BMPs) being used increasingly to control agricultural pollutant losses surfacewaters, establishing the environmental effectiveness of these has become important. Additionally, cost implicationsof and maintaining environmentally effective BMPs are often a crucial factor in selecting adopting BMPs.This article considers both water quality economic concerns presents methodology developed for determining costeffectivefarm- or watershed-level scenarios through...
An ecohydrological watershed model can be used to develop an efficient management plan for improving water quality. However, karst geology poses unique challenges in accurately simulating impacts both surface and groundwater hydrology. Two versions of the Soil Water Assessment Tool (SWAT), Regular-SWAT Topo-SWAT (which incorporates variable source area hydrology), were assessed their robustness hydrology karstic Spring Creek Centre County, Pennsylvania, USA. Appropriate representations –...
Cost-effective heat mitigation strategies are imperative for maintaining milk production and dairy farm profitability in the U.S. with projected climate change. This study investigated cost-effectiveness of four abatement strategies, including Minimal (open barn or shading), Moderate (forced ventilation), High (fans misting), Intense (air conditioning). Heat stress subsequent impacts on per cow were predicted across nine climatic regions early (2015 to 2034), mid (2045 2064) late (2081 2100)...
ABSTRACT: A combinatorial optimization procedure for best management practice (BMP) placement at the watershed level facilitates selection of cost effective BMP scenarios to control non point source (NFS) pollution. genetic algorithm (GA) was selected from among several heuristics. The GA combines an component written in C++ language with spatially variable NFS pollution prediction and economic analysis components within Arc View geographic information system. is modular design, allowing...
ABSTRACT Evaluation of phosphorus (P) management strategies to protect water quality has largely relied on research using simulated rainfall generate runoff from either field plots or shallow boxes packed with soil. Runoff unmanured, grassed (1 m wide × 2 long, 3–8% slope) and bare soil (0.2 1 3% was compared simulation (75 mm h −1 ) standardized by 30‐min duration (rainfall averaged 55 for 41 boxes). Packed had lower infiltration (1.2 cm) greater (2.9 erosion (542 kg ha than (3.7 cm...
Lake Champlain, located between Vermont, New York, and Quebec, exhibits eutrophication due to continuing phosphorus (P) inputs from upstream nonpoint-source areas. To address the effects of this as part total maximum daily load (TMDL) requirements, state-level P reduction goals have been established by both Vermont York Departments Environmental Conservation. Unfortunately, remedial measures undertaken thus far mostly based on voluntary participation landowners not guided a systematic...
Phosphorus (P) loss from agricultural watersheds has long been a critical water quality problem, the control of which focus considerable research and investment. Preventing P depends on accurately representing hydrological chemical processes governing mobilization transport. The Soil Water Assessment Tool (SWAT) is watershed model commonly used to predict run-off non-point source pollution SWAT simulates employing either curve number (CN) or Green Ampt methods, both assume...
Watershed models such as the Soil Water Assessment Tool (SWAT) and Agricultural Policy Environmental EXtender (APEX) are widely used to assess fate transport of agricultural nutrient management practices on soluble particulate phosphorus (P) loss in runoff. P-cycling routines SWAT2012 revision 586, however, do not simulate short-term effects applying a concentrated source P, manure, soil surface where it is most vulnerable We added new set P 586 surface-applied manure at field subwatershed...
Critical source area identification through phosphorus (P) site assessment is a fundamental part of modern nutrient management planning in the United States, yet there has been only sparse testing many versions P Index that now exist. Each tool was developed to be applicable across range field conditions found given geographic area, making evaluation extremely difficult. In general, with in-field monitoring data limited, focusing primarily on corroborating manure and fertilizer "source"...
ABSTRACT: A curve number based model, Soil and Water Assessment Tool (SWAT), a physically Moisture Distribution Routing (SMDR), were applied in headwater watershed Pennsylvania to identify runoff generation areas, as areas have been shown be critical for phosphorus management. SWAT performed better than SMDR simulating daily streamflows over the four-year simulation period (Nash-Sutcliffe coefficient: SWAT, 0.62; SMDR, 0.33). Both models varied streamflow simulations seasonally precipitation...
Cost-effectiveness of nonpoint-source pollution reduction programs in an agricultural watershed depends on theselection and placement control measures within the watershed. Locations for best management practices (BMPs) are commonlyidentified through targeting strategies that define locations BMP implementation based specific criteria uniformlyapplied across The goal this research was to determine if cost-effectiveness scenarios couldbe improved optimization rather than targeting. procedure...
The USDA-ARS Conservation Effects Assessment Project (CEAP) calls for improved understanding of the strengths and weaknesses watershed-scale water quality models under a range climatic, soil, topographic, land use conditions. Assessing simulation model parameter sensitivity helps establish feasible ranges, distinguish among parameters having regional versus universal interactions, ensure that one process does not compensate another due to poor settings. Soil Water Tool (SWAT) autocalibration...
Alternative methods for applying livestock manure to no-till soils involve environmental and economic trade-offs. A process-level farm simulation model (Integrated Farm System Model) was used evaluate liquid dairy (Bos taurus L.) swine (Sus scrofa manure, including no application, broadcast spreading with without incorporation by tillage, band application soil aeration, shallow disk injection. The predicted ammonia emissions, nitrate leaching, phosphorus (P) runoff losses similar those...
Ten years ago, the USDA Agricultural Research Service (ARS) began a series of watershed assessment studies as part Conservation Effects Assessment Project (CEAP). In this overview, decade research progress in 14 watersheds dominated by rain-fed croplands is reviewed to introduce special section journal issue containing papers describing multiwatershed syntheses. The evaluate impacts agricultural practices on soil quality, stream sediment sources, and role climate variability conservation...
Over‐the‐counter and prescription medications are routinely present at detectable levels in surface groundwater bodies. The presence of these emerging contaminants has raised both environmental public health concerns, particularly when the water is used for drinking either directly or with additional treatment. However, frequency occurrence, range concentrations, potential human risks not well understood, especially supplies. Private wells often tested regulated by standards even less...
During the COVID-19 pandemic, wastewater surveillance was leveraged as a powerful tool for monitoring community-scale health. Further, well-known persistence of some pharmaceuticals through treatment plants spurred concerns that increased usage during pandemic would increase concentrations in plant effluent. We collected weekly influent and effluent samples from May 2020 2021 two central Pennsylvania, Penn State Water Reclamation Facility University Area Joint Authority, provide beneficial...
Abstract Per‐ and polyfluoroalkyl substances (PFAS) are a collective name for thousands of synthetic compounds produced to enhance consumer industrial products since the 1940s. They do not easily degrade, some known pose serious ecological human health concerns at trace concentrations (ng L −1 levels). persist in treated wastewater inadvertently introduced into environment when is reused as an irrigation source. The Pennsylvania State University (PSU) has been spray‐irrigating its 2.45 km 2...