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SIR 2010-5206
Betzaida Reyes, Occurrence and Distribution of Organic Chemicals and Nutrients and Comparison of Water-Quality Data from Public Drinking-Water Supplies in the Columbia Aquifer in Delaware, 200008, 76 p.

SIR 2010-5162
Daniel J. Phelan and Cherie V. Miller, Occurrence and Distribution of Organic Wastewater Compounds in Rock Creek Park, Washington, D.C., 200708, 80 p.

SIR 2010-5130
Michael T. Koterba, Cheryl A. Dieter, and Cherie V. Miller , Pesticides in Groundwater in the Anacostia River and Rock Creek Watersheds in Washington, D.C., 2005 and 2008, 102 p.

OFR 2010-1071
Michelle M. Lorah, Daniel J. Soeder, and Jessica A. Teunis , Summary of Organic Wastewater Compounds and Other Water-Quality Data in Charles County, Maryland, October 2007 through August 2008, 19 p., plus appendixes.

SIR 2009-5112
Emily H. Majcher, Michelle M. Lorah, Daniel J. Phelan, and Angela L. McGinty, Design and Performance of an Enhanced Bioremediation Pilot Test in a Tidal Wetland Seep, West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 84p.

SIR 2008-5190
Scott W. Ator, Natural and Human Influences on Water Quality in a Shallow Regional Unconsolidated Aquifer, Northern Atlantic Coastal Plain, 32p.

FS 2007-3085
Michael J. Brayton, Judith M. Denver, Gregory C. Delzer, and Pixie A. Hamilton, Organic Compounds in Potomac River Water Used for Public Supply near Washington, D.C., 2003-05, 6p.

FS 2008-3068
Scott W. Ator and Betzaida Reyes, Pesticides in Groundwater of Central and Western Maryland, 6p.

SIR 2007-5165
Lorah and others, Microbial Consortia Development and Microcosm and Column Experiments for Enhanced Bioremediation of Chlorinated Volatile Organic Compounds, West Branch Canal Creek Wetland Area, Aberdeen Proving Ground, Maryland, 92p.

SIR 2007-5142
By Cherie V. Miller, Angélica L. Gutiérrez-Magness, Brenda L. Feit Majedi, and Gregory D. Foster, Water Quality in the Upper Anacostia River, Maryland: Continuous and Discrete Monitoring with Simulations to Estimate Concentrations and Yields, 2003-05, 51p.

SIR 2006-5233
By Emily H. Majcher , Daniel J. Phelan Michelle M. Lorah, and Angela L. McGinty, Characterization of Preferential Groundwater Seepage From a Chlorinated Hydrocarbon-Contaminated Aquifer to West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 2002-04, 204p.

SIR 2006-5080
By Jonathan J.A. Dillow and Jeff P. Raffensperger, Estimates of the Loads of Nitrite + Nitrate in the Flow of Bassett Creek to the Maryland Coastal Bays Adjacent to Assateague Island National Seashore, Water Years 2003–2004 18p.

SIR 2006-5038
By Angélica L. Gutiérrez-Magness, Simulation of Nutrient and Sediment Concentrations and Loads in the Delaware Inland Bays Watershed: Extension of the Hydrologic and Water-Quality Model to Ungaged Segments 36p.

SIR 2005-5257
By Linda M. Debrewer, Scott W. Ator, and Judith M. Denver, Factors Affecting Spatial and Temporal Variability in Nutrient and Pesticide Concentrations in the Surficial Aquifer on the Delmarva Peninsula, 56 p

SIR 2005-5057
By Michelle M. Lorah, Tracey A. Spencer, and Angela L. McGinty, Temporal Changes in Indicators of Natural Attenuation and Physical Controlling Factors for a Freshwater Tidal Wetland Contaminated With Chlorinated Volatile Organic Compounds, West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 1995-2001 64p.

OFR 2006-1392
By Cheryl A. Klohe and Linda M. Debrewer, Summary of Groundwater-Quality Data in the Anacostia River Watershed, Washington, D.C., September-December 2005, 74 p.

SIR 2006-5011
By Michael T. Koterba, A. Scott Andres (Delaware Geological Survey), Joseph Vrabel, Dianna M. Crilley, Zolton Szabo, John F. DeWild, George R. Aiken, and Betzaida Reyes-Padro, Occurrence and Distribution of Mercury in the Surficial Aquifer, Long Neck Peninsula, Sussex County, Delaware, 2003-04 175p.

FS 2006-3119
By Judith M. Denver and Scott W. Ator, Pesticides in Groundwater of the Maryland Coastal Plain , 24p.

SIR 2006-5178
By Michael J. Langland, Jeff P. Raffensperger, Douglas L. Moyer, Jurate M. Landwehr, and Gregory E. Schwarz, Changes in Streamflow and Water Quality in Selected Nontidal Basins in the Chesapeake Bay Watershed, 1985-2004 75p.

SIR 2006-5140
By Cherie V. Miller (U.S. Geological Survey, Baltimore, MD) , Holly S. Weyers (U.S. Geological Survey, Baltimore, MD), Vicki S. Blazer (U.S. Geological Survey, National Fish Health Research Laboratory, Kearneysville, WV), and Mary E. Freeman (U.S. Geological Survey, Patuxent Wildlife Research Center, University of Georgia, Athens, GA), 48 p., Chemical and Ecological Health of White Sucker (Catostomus Commersoni) in Rock Creek Park, Washington, D.C., 2003–04 48p.

SIR 2004-5220
By Michelle M. Lorah, David R. Burris, and Linda Jo Dyer, Natural Attenuation of Chlorinated Solvent Groundwater Plumes Discharging Into Wetlands 233p.

SIR 2004-5125
By Michael P. Senus, Michael J. Langland, and Douglas L. Moyer, Nutrient and Sediment Concentrations, Loads, and Trends for Four Nontidal Tributaries in the Chesapeake Bay Watershed, 1997-2001 33p.

SIR 2004-5118
By Earl A. Greene, Andrew E. LaMotte, and Kerri-Ann Cullinan, Groundwater Vulnerability to Nitrate Contamination at Multiple Thresholds in the Mid-Atlantic Region Using Spatial Probability Models, 24p.

SIR 2004-5056
By Allen C. Gellis, William S.L. Banks, Michael J. Langland, and Sarah K. Martucci, Summary of Suspended-Sediment Data for Streams Draining the Chesapeake Bay Watershed, Water Years 1952–2002, 59p.

SIR 2004-5051
By Scott W. Ator, Judith M. Denver, and Michael J. Brayton, Hydrologic and Geochemical Controls on Pesticide and Nutrient Transport to Two Streams on the Delmarva Peninsula, 34 p.

SIR 2004-5011
Marie Stewart, William R. Guertal, and Jeffrey R. Barbaro (USGS) and Timothy McHale (Dover National Test Site), Distribution of Methyl Tert-Butyl Ether (MTBE) and Selected Water-Quality Constituents in the Surficial Aquifer at the Dover National Test Site, Dover Air Force Base, Delaware, 2001, 13 p.

OFR 2004-1324
By Andrew A. LaMotte , Metadata for ReVA Logistic Regression Dataset, 9 p.

OFR 2004-1433
By John W. Brakebill and Stephen D. Preston, Online Publication - OFR-2004-1433 - Digital Data Used to Relate Nutrient Inputs to Water Quality in the Chesapeake Bay Watershed, Version 3.0, 20 p.

FS 2004-3067
By Earl A. Greene, Andrew E. LaMotte, Kerri-Ann Cullinan,and Elizabeth R. Smith, Groundwater Vulnerability to Nitrate Contamination at Multiple Thresholds in the Mid-Atlantic Region, 4p.

FS 111-03
By Judith C. Wheeler, Freshwater Use Trends in Delaware, 2000, 2p.

FS 112-03
By Judith C. Wheeler, Freshwater Use Trends in Maryland, 1985-2000, 4 p.

FS 091-03
By Scott W. Phillips and Bruce D. Lindsey, The Influence of Groundwater on Nitrogen Delivery to the Chesapeake Bay, 6 p.

OFR 03-73
Cherie V. Miller and Cheryl A. Klohe, Summary of Water- and Sediment-Quality Data for Anacostia River Well Sites Sampled in July-August 2002, 54 p.

WRIR 03-4119
By Michelle M. Lorah, Mary A. Voytek, and Tracey A. Spencer, Preliminary Assessment of Microbial Communities and Biodegradation of Chlorinated Volatile Organic Compounds in Wetlands at Cluster 13, Lauderick Creek Area, Aberdeen Proving Ground, Maryland, 19 p.

WRIR 02-4282
Daniel J. Soeder and Cherie V. Miller, Groundwater Contamination from Lead Shot at Prime Hook National Wildlife Refuge, Sussex County, Delaware, 26 p.

WRIR 02-4076
Daniel J. Phelan, William B. Fleck, Michelle M. Lorah, and Lisa D. Olsen, Changes in Groundwater Quality in the Canal Creek Aquifer Between 1995 and 2000–2001, West Branch Canal Creek Area, Aberdeen Proving Ground, Maryland, 42 p.

WRIR 02-4157
Michelle M. Lorah, Mary A. Voytek, Julie D. Kirshtein, and Elizabeth J. (Phillips) Jones, Anaerobic Degradation of 1,1,2,2-Tetrachloroethane and Association with Microbial Communities in a Freshwater Tidal Wetland, Aberdeen Proving Ground, Maryland: Laboratory Experiments and Comparisons to Field Data, 61p.

WRIR 02-4121
Jeffrey R. Barbaro and Pradumna P. Neupane, Distribution and Mass Loss of Volatile Organic Compounds in the Surficial Aquifer at Sites FT03, LF13, and WP14/LF15, Dover Air Force Base, Delaware, November 2000–February 2001, 53p.

WRIR 02-4067
A.L. Anderson,, C.V. Miller, L.D. Olsen, E.J. Doheny, and D.J. Phelan, 2002, Water quality, sediment quality, and stream-channel classification of Rock Creek, Washington, D.C., 1999-2000, 91 p.

WRIR 02-4029
Jonathan J.A. Dillow, William S.L. Banks and Michael J. Smigaj, Groundwater Quality and Discharge to Chincoteague and Sinepuxent Bays Adjacent to Assateague Island National Seashore, Maryland, 42p.

OFR 01-420
Tracey A. Spencer, Daniel J. Phelan, Lisa D. Olsen, and Michelle M. Lorah, Groundwater and Surface-Water Quality Data for the West Branch Canal Creek Area, Aberdeen Proving Ground, Maryland, November 1999–May 2001, 37 p.

OFR-01-327
Matthew J. Ferrari, Occurrence and Distribution of Selected Contaminants in Public Drinking-Water Supplies in the Surficial Aquifer in Delaware, 17p.

OFR-01-292
Daniel J. Phelan, Lisa D. Olsen, Michael P. Senus, and Tracey A. Spencer, Assessment of Volatile Organic Compounds in Surface Water at Canal Creek, Aberdeen Proving Ground, Maryland, November 1999–September 2000, 57p.

OFR-01-251
John W. Brakebill, Stephen D. Preston, and Sarah K. Martucci, Digital Data Used to Relate Nutrient Inputs to Water Quality in the Chesapeake Bay Watershed, Version 2.0, 17p.

OFR-01-251
John W. Brakebill, Stephen D. Preston, and Sarah K. Martucci, Digital Data Used to Relate Nutrient Inputs to Water Quality in the Chesapeake Bay Watershed, Version 2.0, 17p.

OFR-01-292
Daniel J. Phelan, Lisa D. Olsen, Michael P. Senus, and Tracey A. Spencer, Assessment of Volatile Organic Compounds in Surface Water at Canal Creek, Aberdeen Proving Ground, Maryland, November 1999–September 2000, 57p.

WRIR 01-4216
William S.L. Banks and David A. Battigelli, Occurrence and Distribution of Microbiological Contamination and Enteric Viruses in Shallow Groundwater in Baltimore and Harford Counties, Maryland, 44p.

WRIR 01-4147
William S.L. Banks, Cheryl A. Klohe, and David A. Battigelli, Occurrence and Distribution of Enteric Viruses in Shallow Groundwater and Factors Affecting Well Vulnerability to Microbiological Contamination in Worcester and Wicomico Counties, Maryland, 28p.

WRIR 01-4150
Jeffry R. Barbaro, Assessment of Natural Attenuation of Groundwater Contamination at Sites FT03, LF13, and WP14/LF15, Dover Air Force Base, Delaware, 53p.

WRIR-01-4106
Frederick J. Tenbus and William B. Fleck, Simulation of Groundwater Flow and Transport of Chlorinated Hydrocarbons at Graces Quarters, Aberdeen Proving Ground, Maryland, 57p.

WRIR-00-4232
Stephen D. Preston, Statistical Identification of Hydrochemical Response Units for Hydrologic Monitoring and Modeling in Maryland

OFR-00-446
Daniel J. Phelan, Michael P. Senus, and Lisa D. Olsen - Lithologic and Groundwater-Quality Data Collected Using Hoverprobe Drilling Techniques at the West Branch Canal Creek Wetland, Aberdeen Proving Ground, Maryland, April-May 2000, 43 p.

OFR-00-208
Mick P. Senus and Frederick J. Tenbus, Long-Term Groundwater Monitoring Program and Performance-Evaluation Plan for the Extraction System at the Former Nike Missile Battery Site, Aberdeen Proving Ground, Maryland, 21p.

OFR-00-203
By Lisa D. Olsen and Tracy A. Spencer, Abstract of Assessment of Volatile Organic Compounds in Surface Water at West Branch Canal Creek, Aberdeen Proving Ground, Maryland, 1999

OFR-00-282
Spencer, T.A., Olsen, L.D., Lorah, M.M.and Mount, M.M. Water-Quality and Water-Level Data for a Freshwater Tidal Wetland, West Branch Canal Creek, Aberdeen Proving Ground, Maryland, October 1998 - September 1999, 189 p.

FS 157-00
By Scott W. Ator, Judith M. Denver, and Ann M. Pitchford (EPA) Developing Landscape-Indicator Models for Pesticides and Nutrients in Streams of the Mid-Atlantic Coastal Plain 1 figure, 1 table, 4 p.

FS 053-00
By Joseph L. Bachman and David E. Krantz The Potential for Denitrification of Groundwater by Coastal Plain Sediments in the Patuxent River Basin, Maryland 2 figures, 1 table, 4 p.

WRIR 99-4240
William S.L. Banks and Andrew E. LaMotte, Sediment Accumulation and Water Volume in Loch Raven Reservoir, Baltimore County, Maryland Poster reformatted for the Web.

WRIR 99-4167
Jonathan J.A. Dillow, and Earl A. Greene, Groundwater Discharge and Nitrate Loadings to the Coastal Bays of Maryland, 8p.

WRIR 99-4054
Stephen D. Preston and John W. Brakebill, Application of Spatially Referenced Regression Modeling for the Evaluation of Total Nitrogen Loading in the Chesapeake Bay Watershed 1 table, 12 figures, 12 p.

OFR-99-60
John W. Brakebill and Stephen D. Preston Digital Data Used to Relate Nutrient Inputs to Water Quality in the Chesapeake Bay Watershed, Version 1.0.

OFR 99-57
Miller, C.V., Foster, G.D., Huff, T.B., Garbarino, John R., Organic Compounds and Trace Elements in the Pocomoke River and Tributaries, Maryland

FS 150-99
By Scott W. Phillips, Michael J. Focazio, and L. Joseph Bachman Discharge, Nitrate Load, and Residence Time of Groundwater in the Chesapeake Bay Watershed 7 figures, 1 table, 6 p.

OFR 98-180
A.L. Derosier, J.W. Brakebill, J.M. Denis, and S.K. Kelley, Water-Quality Assessment of the Potomac River Basin: Water-Quality and Selected Spatial Data, 1992-96

OFR 98-158
Ator, S.W., Nitrate and Pesticide Data for Waters of the Mid-Atlantic Region, 2 p.

WRIR 98-4177
Linda C. Darrell, Brenda Feit Majedi, Joy S.Lizarraga, and Joel D. Blomquist, Nutrient and Suspended-Sediment Concentrations, Trends, Loads, and Yields from the Nontidal part of the Susquehanna, Potomac, Patuxent, and Choptank Rivers, 1985–96 13 tables, 10 figures, 38 p.

WRIR 98-4059
L.J. Bachman, B. Lindsey, J. Brakebill, and D.S. Powars, Groundwater Discharge and Base Flow Nitrate Loads of Nontidal Streams, and Their Relation to a Hydrogeomorphic Classification of the Chesapeake Bay Watershed, Middle Atlantic Coast

C-1166
Ator, S.W., Blomquist, J.D., Brakebill, J.W., Denis, J.M., Ferrari, M.J., Miller, C.V., and Zappia, Humbert, 1998, Water quality in the Potomac River Basin - Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia, 1992-96, 38 p.

OFR 97-666
Donnelly, C.A., Ferrarri, M.J., Summary of Pesticide Data from Streams Wells in the Potomac River Basin, 1993-96, 8 p.

WRIR 97-4280
Ferrari, M.J., Ator, S.W., Blomquist, J.D., and Dysart, J.E., Pesticides in Surface Water of the Mid-Atlantic Region, 12p.

WRIR 97-4225
M.J. Focazio, L.N. Plummer, J.K. Bohike, E. Busenberg, L.J. Bachman, and D.S Powars, Preliminary Estimates of Residence Times and Apparent Ages of Groundwater in the Chesapeake Bay Watershed, and Water Quality Data From a Survey of Springs, 75 p.

WRIR 97-4171
M.M. Lorah, L.D. Olsen, B.L. Smith, M.A. Johnson, and W.B. Fleck, Natural Attenuation of Chlorinated Volatile Organic Compounds in a Freshwater Tidal Wetland, Aberdeen Proving Ground, Maryland, 95 p.

WRIR 97-4139
S.W. Ator, and M.J. Ferrari, Nitrate and selected pesticides in Groundwater of the Mid-Atlantic Region, 8 p.

WRIR 97-4051
Humbert Zappia, and G.T. Fisher, Water-Quality Assessment of the Potomac River Basin: Analysis of Available Pesticide Data, 1972-90, 80 p.

WRIR 96-4210
Humbert Zappia, Chlordane, DDT, PCB's, and Other Selected Organic Compounds in Asiatic Clams and Yellow Bullhead in the Potomac River Basin, Maryland, 1992, 6 p.

FS 140-96
By L.D. Zynjuk and B.S. Majedi January 1996 Floods Deliver Large Loads of Nutrients and Sediments to the Chesapeake Bay, 2 p.

WRIR 95-4099
Matthew J. Ferrari and Scott W. Ator., Nitrate in Groundwater in the Great Valley Carbonate Subunit of the Potomac River Basin, 6p.

OFR 91-157
Gerhart, J.M., National water-quality assessment program--the Potomac River Basin (fact sheet).

W-2400
National Water Summary 1990-91--Hydrologic Events and Stream Water Quality: Maryland and the District of Columbia

W-2400
National Water Summary 1990-91--Hydrologic Events and Stream Water Quality: Delaware

W-2275
McGreevy, L.J., and Wheeler, J.C., 1985, Maryland and the District of Columbia in National Water summary 1984, Hydrologic events--Selected water-quality trends, and Groundwater resources, p. 243-248.

W-2275
Hodges, A.L. Jr. Delaware in National Water summary 1984, Hydrologic events--Selected water-quality trends, and Groundwater resources, p. 243-248

Abstracts

Brakebill, J.W., 1995, Analyzing effects of land use on Groundwater quality in the Potomac River Basin: Abstract Booklet, Mid-Atlantic Highlands Area Environmental Monitoring and Assessment Conference, October 24-26, 1995.

Blomquist, J. D., and Fisher, G. T., 1994, Nitrogen sources and nitrate loads in major watersheds of the Upper Potomac River Basin [abs.],: EOS, Transactions of the American Geophysical Union, v. 75, n. 16, p. 165, Supplement with abstracts for the 1994 Spring Meeting, Baltimore, Md.

Brakebill, J. W., 1994, Applications of a geographic information system in water-quality assessment of the Potomac River Basin study unit, National Water-Quality Assessment Program [abs.]: Abstract Booklet, Mid-Atlantic Highlands Area Environmental Monitoring and Assessment Conference, Hershey, Pennsylvania, February 23-25, 1994, p. 63.

Ferrari, M.J., 1994, Assessment of Groundwater quality in the Great Valley Carbonate subunit, Potomac River basin study unit, national water-quality assessment program [abs.]: EOS, Transactions of the American Geophysical Union, v. 75, n. 16, p. 166, Supplement with abstracts for the 1994 Spring Meeting, Baltimore, Md.

Ferrari, M.J., 1994, Assessment of Groundwater quality in the Great Valley Carbonate subunit, Potomac River Basin study unit, national water-quality assessment program [abs.]: Abstract Booklet, Mid-Atlantic Highlands Area Environmental Monitoring and Assessment Conference, Hershey, Pennsylvania, February 23-25, 1994, p. 39.

Fisher, G.T. , 1994, Assessment of surface-water quality in the Great Valley carbonate subunit, Potomac River Basin study unit, National Water-Quality Assessment Program [abs.]: Abstract Booklet, Mid-Atlantic Highlands Area Environmental Monitoring and Assessment Conference, Hershey, Pennsylvania, February 23-25, 1994, p. 44.

Gerhart, J.M. 1994, Study design for assessing the occurrence and distribution of water-quality conditions in the Potomac River Basin study unit, NAWQA program [abs.]: Abstract Booklet, Mid-Atlantic Highlands Area Environmental Monitoring and Assessment Conference, Hershey, Pennsylvania, February 23-25, 1994, p. 39.

Gerhart, J.M., and Brakebill, J.W., 1993, Design of a multi-scale water-quality assessment for the Potomac River Basin [abs.]: EOS, Transactions of the American Geophysical Union, Supplement with abstracts for the 1993 Spring Meeting, Baltimore, Md.

Zappia, Humbert, 1994, Ecological surveys at fixed water-quality monitoring stations, Potomac River Basin study unit, National Water-Quality Assessment Program [abs.]: Abstract Booklet, Mid-Atlantic Highlands Area Environmental Monitoring and Assessment Conference, Hershey, Pennsylvania, February 23-25, 1994, p. 42.

Zappia, Humbert, and Sorenson, S.K., 1994, Benthic-macroinvertebrate communities and water quality in agricultural and urban subbasins in the Great Valley carbonate subunit of the Potomac River Basin, [abs.]: in Sorenson, Stephen K., ed., 1994, Proceedings abstracts American Water Resources Association's symposium on the National Water-Quality Assessment Program--November 7-9, 1994, Chicago, Illinois: U.S. Geological Survey Open-File Report 94-397, p. 18.

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