Maryland-Delaware-D.C. Water Science Center

Publications

Below is a list of publications with authors who are based at the Maryland-Delaware-District of Columbia Water Science Center. Please note: some of the publications listed may be from professional journals that require additional subscription to access.

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Filter Total Items: 190
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Year Published: 2017

Channel response to sediment release: insights from a paired analysis of dam removal

Dam removals with unmanaged sediment releases are good opportunities to learn about channel response to abruptly increased bed material supply. Understanding these events is important because they affect aquatic habitats and human uses of floodplains. A longstanding paradigm in geomorphology holds that response rates to landscape disturbance...

Collins, Mathias J.; Snyder, Noah P.; Boardman, Graham; Banks, William S.; Andrews, Mary; Baker, Matthew E.; Conlon, Maricate; Gellis, Allen; McClain, Serena; Miller, Andrew; Wilcock, Peter
Collins, M.J., Snyder, N.P., Boardman, Graham, Banks, W.S.L., Andrews, Mary, Baker, M.E., Conlon, Maricate, Gellis, Allen, McClain, Serena, Miller, Andrew, and Wilcok, Peter, 2017, Channel response to sediment release: insights from a paired analysis of dam removal: Earth Surface Processes and Landforms, v. 42, no. 11, p. 1,636-1,651, doi: 10.1002/esp.4108.

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Year Published: 2017

Water quality in the surficial aquifer near agricultural areas in the Delaware Coastal Plain, 2014

The U.S. Geological Survey, in cooperation with the Delaware Department of Agriculture, developed a network of wells to monitor groundwater quality in the surficial aquifer of the Delaware Coastal Plain. Well-drained soils, a flat landscape, and accessible water in the Delaware Coastal Plain make for a productive agricultural setting. As such,...

Fleming, Brandon J.; Mensch, Laura L.; Denver, Judith M.; Cruz, Roberto M.; Nardi, Mark R.
Fleming, B.J., Mensch, L.L., Denver, J.M., Cruz, R.M., and Nardi, M.R., 2017, Water quality in the surficial aquifer near agricultural areas in the Delaware Coastal Plain, 2014: U.S. Geological Survey Scientific Investigations Report 2017–5054, 28 p., https://doi.org/10.3133/sir20175054.

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Year Published: 2017

Determining the sources of fine-grained sediment using the Sediment Source Assessment Tool (Sed_SAT)

A sound understanding of sources contributing to instream sediment flux in a watershed is important when developing total maximum daily load (TMDL) management strategies designed to reduce suspended sediment in streams. Sediment fingerprinting and sediment budget approaches are two techniques that, when used jointly, can qualify and quantify the...

Gorman Sanisaca, Lillian E.; Gellis, Allen C.; Lorenz, David L.
Gorman Sanisaca, L.E., Gellis, A.C., and Lorenz, D.L., 2017, Determining the sources of fine-grained sediment using the Sediment Source Assessment Tool (Sed_SAT): U.S. Geological Survey Open File Report 2017–1062, 104 p., https://doi.org/10.3133/ofr20171062.

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Year Published: 2017

Optimal hydrograph separation using a recursive digital filter constrained by chemical mass balance, with application to selected Chesapeake Bay watersheds

Quantitative estimates of base flow are necessary to address questions concerning the vulnerability and response of the Nation’s water supply to natural and human-induced change in environmental conditions. An objective of the U.S. Geological Survey National Water-Quality Assessment Project is to determine how hydrologic systems are affected by...

Raffensperger, Jeff P.; Baker, Anna C.; Blomquist, Joel D.; Hopple, Jessica A.
Raffensperger, J.P., Baker, A.C., Blomquist, J.D., and Hopple, J.A., 2017, Optimal hydrograph separation using a recursive digital filter constrained by chemical mass balance, with application to selected Chesapeake Bay watersheds: U.S. Geological Survey Scientific Investigations Report 2017–5034, 51 p., https://doi.org/10.3133/sir20175034.

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Year Published: 2017

Sediment source fingerprinting as an aid to catchment management: A review of the current state of knowledge and a methodological decision-tree for end-users

The growing awareness of the environmental significance of fine-grained sediment fluxes through catchment systems continues to underscore the need for reliable information on the principal sources of this material. Source estimates are difficult to obtain using traditional monitoring techniques, but sediment source fingerprinting or tracing...

Collins, A.L; Pulley, S.; Foster, I.D.L; Gellis, Allen; Porto, P.; Horowitz, A.J.
Collins, A.L., Pulley, S., Foster, I.D.L., Gellis, A., Porto, P., and Horowitz., A.J., 2017, Sediment source fingerprinting as an aid to catchment management: A review of the current state of knowledge and a methodological decision-tree for end-users: Journal of Environmental Management , v. 194, p., 86-108, http://dx.doi.org/10.1016/j.jenvman.2016.09.075.

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Year Published: 2017

Sources and ages of fine-grained sediment to streams using fallout radionuclides in the Midwestern United States

Fallout radionuclides, 7Be and 210Pbex, sampled in bed sediment for 99 watersheds in the Midwestern region of the United States and in 15 samples of suspended sediment from 3 of these watersheds were used to partition upland from channel sources and to estimate the age or the time since the surface-derived portion of sediment was on the...

Gellis, Allen; Fuller, Christopher C.; Van Metre, Peter C.
Gellis, A.C., Fuller, C.C., and Van Metre, P.C., 2017, Sources and ages of fine-grained sediment to streams using fallout radionuclides in the Midwestern United States: Journal of Environmental Management, v. 194, p. 73-85, https://doi.org/10.1016/j.jenvman.2016.06.018

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Year Published: 2017

Bootstrap-estimated land-to-water coefficients from the CBTN_v4 SPARROW model

This file contains 200 sets of bootstrap-estimated land-to-water coefficients from the CBTN_v4 SPARROW model, which is documented in USGS Scientific Investigations Report 2011-5167. The coefficients were produced as part of CBTN_v4 model calibration to provide information about the uncertainty in model estimates.

Ator, Scott; Brakebill, John W.; Blomquist, Joel D.
Ator, S.W., Brakebill, J.W., and Blomquist, J.D., 2016, Bootstrap-Estimated Land-to-Water Coefficients from the CBTN_v4 SPARROW Model: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F70863CT.

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Year Published: 2017

Thickness of the surficial aquifer, Delmarva Peninsula, Maryland and Delaware

A digital map of the thickness of the surficial unconfined aquifer, including from the land surface and unsaturated zone to the bottom of sediments of geologic units identified as part of the surficial aquifer, was produced to improve understanding of the hydrologic system in the Maryland and Delaware portions of the Delmarva Peninsula. The map is...

Denver, Judith M.; Nardi, Mark R.
Denver, J.M., and Nardi, M.R., 2016, Thickness of the Surficial Aquifer, Delmarva Peninsula, Maryland and Delaware: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F7610XFT.

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Year Published: 2017

Storms, channel changes, and a sediment budget for an urban-suburban stream, Difficult Run, Virginia, USA

Determining erosion and deposition rates in urban-suburban settings and how these processes are affected by large storms is important to understanding geomorphic processes in these landscapes. Sediment yields in the suburban and urban Upper Difficult Run are among the highest ever recorded in the Chesapeake Bay watershed, ranging from 161 to 376...

Gellis, Allen C.; Myers, Michael; Noe, Gregory B.; Hupp, Cliff R.; Shenk, Edward; Myers, Luke
Gellis, A.C., Myers, M.K., Noe, G.B., Hupp, C.R., Schenk, E.R., and Myers, L., 2016, Storms, channel changes, and a sediment budget for an urban suburban stream, Difficult Run, Virginia, USA: Geomorphology, v. 278, p. 128-148, http://dx.doi.org/10.1016/j.geomorph.2016.10.031.

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Year Published: 2016

A manual to identify sources of fluvial sediment

Sediment is an important pollutant of concern that can degrade and alter aquatic habitat. A sediment budget is an accounting of the sources, storage, and export of sediment over a defined spatial and temporal scale. This manual focuses on field approaches to estimate a sediment budget. We also highlight the sediment fingerprinting approach to...

Gellis, Allen C.; Fitzpatrick, Faith A.; Schubauer-Berigan, Joseph
Gellis, A., Fitzpatrick, F., and Schubauer-Berigan, J., 2016, A manual to identify sources of fluvial sediment: Cincinnati, Ohio, U.S. Environmental Protection Agency report EPA/600/R-16/210, 106 p., accessed February 23, 2017, at https://nepis.epa.gov/Exe/ZyPDF.cgi/P100QVM1.PDF?Dockey=P100QVM1.PDF.

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Year Published: 2016

Estimated use of water in the Delaware River Basin in Delaware, New Jersey, New York, and Pennsylvania, 2010

The Delaware River Basin (DRB) was selected as a Focus Area Study in 2011 by the U.S. Geological Survey (USGS) as part of the USGS National Water Census. The National Water Census is a USGS research program that focuses on national water availability and use and then develops new water accounting tools and assesses water availability at both the...

Hutson, Susan S.; Linsey, Kristin S.; Ludlow, Russell A.; Reyes, Betzaida; Shourds, Jennifer L.
Hutson, S.S., Linsey, K.S., Ludlow, R.A., Reyes, Betzaida, and Shourds, J.L., 2016, Estimated use of water in the Delaware River Basin in Delaware, New Jersey, New York, and Pennsylvania, 2010: U.S. Geological Survey Scientific Investigations Report 2015–5142, 76 p., http://dx.doi.org/10.3133/sir20155142.

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Year Published: 2016

Occurrence and distribution of arsenic and radon in water from private wells in the Rancocas aquifer, southern New Castle and northern Kent Counties, Delaware, 2015

Water samples were collected and analyzed for arsenic and radon from 36 private, mostly domestic wells that tap the Rancocas aquifer in southern New Castle and northern Kent Counties, Delaware, during the summer of 2015. Both arsenic and radon are from natural mineral sources, in particular glauconitic and other marine-derived sediments, which are...

Denver, Judith M.
Denver, J.M., 2016, Occurrence and distribution of arsenic and radon in water from private wells in the Rancocas aquifer, southern New Castle and northern Kent Counties, Delaware, 2015: U.S. Geological Survey Open-File Report 2016–1143, 15 p., http://dx.doi.org/10.3133/ofr20161143.