Allen C Gellis, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 16
Floodplain sedimentation, bank erosion, and biogeochemical cycling of sediment and nutrients in Smith Creek (Virginia) 2012-2015 Floodplain sedimentation, bank erosion, and biogeochemical cycling of sediment and nutrients in Smith Creek (Virginia) 2012-2015
This USGS Data Release represents tabular data for chemical and physical attributes, rates of deposition, erosion, and mineralization of bank and floodplain sediments and soils from five study sites in the Smith Creek watershed between 2012 and 2015. The data release was produced in compliance with the new 'open data' requirements as a way to make the scientific products associated with...
Sediment-sample and climate data for the agricultural and forested parts of Smith Creek watershed, Virginia (2012-2015) Sediment-sample and climate data for the agricultural and forested parts of Smith Creek watershed, Virginia (2012-2015)
This metadata record covers 5 comma delimited ascii files that contain sediment source sample data, sediment target sample data, quantitation limits for samples, and daily temperature data. This data release is a companion to the journal article Sediment fingerprinting to delineate sources of fine-grained sediment in the agricultural and forested Smith Creek watershed, Virginia (2012...
Sediment Source Assessment Tool (Sed_SAT) 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 major sources of sediment in a given...
Radionuclide and Pesticide data for sediment age and source analysis in the Midwest Stream-Quality Assessment Region (2013-2014) Radionuclide and Pesticide data for sediment age and source analysis in the Midwest Stream-Quality Assessment Region (2013-2014)
A study examining the sources and ages of fine-grained bed material (less than 0.063 mm) was conducted for 99 sites in the USGS NAWQA Midwest Stream Quality Assessment (MSQA) during the summer of 2014, including 15 suspended sediment and 5 cropland top soil samples. Bed material samples were analyzed for radionuclides (7Be, 210Pbex, 137Cs) and pesticides (bifenthrin and DDE); suspended...
Filter Total Items: 66
Monthly suspended-sediment apportionment for a western Lake Erie agricultural tributary Monthly suspended-sediment apportionment for a western Lake Erie agricultural tributary
Black Creek, a headwater to the Maumee River and western Lake Erie, is an agricultural basin with a mix of cropland (66%), pasture (19%), and forest (7%) linked by a road network to the rural community. Suspended sediment was collected monthly during the 2018 water year for the main stem and two sub-basins using in-situ, passive samplers that integrated a range of streamflow conditions...
Authors
Tanja Williamson, Edward Dobrowolski, Allen Gellis, Timur Sabitov, Lillian Gorman Sanisaca
Sediment dynamics and implications for management: State of the science from long‐term research in the Chesapeake Bay watershed, USA Sediment dynamics and implications for management: State of the science from long‐term research in the Chesapeake Bay watershed, USA
This review aims to synthesize the current knowledge of sediment dynamics using insights from long‐term research conducted in the watershed draining to the Chesapeake Bay, the largest estuary in the U.S., to inform management actions to restore the estuary and its watershed. The sediment dynamics of the Chesapeake are typical of many impaired watersheds and estuaries around the world...
Authors
Gregory Noe, Matthew Cashman, Katherine Skalak, Allen Gellis, Kristina Hopkins, Douglas Moyer, James Webber, Adam Benthem, Kelly Maloney, John Brakebill, Andrew Sekellick, Michael Langland, Qian Zhang, Gary Shenk, Jennifer Keisman, Cliff Hupp
Pavement alters delivery of sediment and fallout radionuclides to urbanstreams Pavement alters delivery of sediment and fallout radionuclides to urbanstreams
Sediment from urban impervious surfaces has the potential to be an important vector for contaminants, particularly where stormwater culverts and other buried channels draining large impervious areas exit from underground pipes into open channels. To better understand urban sediment sources and their relation to fallout radionuclides, we collected samples of rainfall, urban sediment...
Authors
Allen Gellis, Christopher Fuller, Peter Van Metre, Barbara Mahler, C. Welty, Andrew Miller, Lucas Nibert, Zachary Clifton, Jeremy Malen, J.T. Kemper
Stream corridor sources of suspended sediment and phosphorus from an agricultural tributary to the Great Lakes Stream corridor sources of suspended sediment and phosphorus from an agricultural tributary to the Great Lakes
Fine-grained sediment and phosphorous are major contaminants in the Great Lakes and their tributaries. Plum Creek, Wisconsin (92 km2), a tributary to the Lower Fox River, has a Total Maximum Daily Load (TMDL) requiring reductions of suspended sediment and phosphorus loading by 70% and 77%, respectively. In 2016-18, an integrated sediment fingerprinting and stream corridor-based sediment...
Authors
Faith A. Fitzpatrick, James Blount, Leah Kammel, David Hoover, Allen Gellis, Barbara C. Scudder Eikenberry
Combining sediment fingerprinting with age-dating sediment using fallout radionuclides for an agricultural stream, Walnut Creek, Iowa, USA Combining sediment fingerprinting with age-dating sediment using fallout radionuclides for an agricultural stream, Walnut Creek, Iowa, USA
Purpose The main purpose of this study was to demonstrate the utility of the sediment fingerprinting approach to apportion surface-derived sediment, and then age date that portion using short-lived fallout radionuclides. In systems where a large mass of mobile sediment is in channel storage, age dating provides an understanding of the transfer of sediment through the watershed and the...
Authors
Allen Gellis, Christopher Fuller, Peter Van Metre, Christopher Filstrup, Kevin Cole, Timur Sabitov
Preface—Evaluating the response of critical zone processes to human impacts with sediment source fingerprinting Preface—Evaluating the response of critical zone processes to human impacts with sediment source fingerprinting
1) Background: Critical Zone Processes in the Anthropocene The Earth’s Critical Zone encompasses a suite of interconnected processes in the near-surface lithosphere, pedosphere, biosphere, atmosphere, and hydrosphere (Brantley et al., 2007; Lin, 2010) (Fig. 1). Processes and interactions both within and between these various Critical Zone components supports life-sustaining ecosystem...
Authors
J. Laceby, Allen Gellis, Alexander Koiter, Will Blake, Olivier Evrard
Bank‐derived material dominates fluvial sediment in a suburban Chesapeake Bay watershed Bank‐derived material dominates fluvial sediment in a suburban Chesapeake Bay watershed
Excess fine sediment is a leading cause of ecological degradation within the Chesapeake Bay watershed. To effectively target sediment mitigation measures, it is necessary to identify and quantify the delivery of sediment sources to local waterbodies. This study examines the contributions of sediment sources within Upper Difficult Run, a suburbanized watershed in Fairfax County, Virginia...
Authors
Matthew Cashman, Allen Gellis, Lillian Gorman Sanisaca, Gregory Noe, Vanessa Cogliandro, Anna Baker
Sediment Source Assessment Using Sediment Fingerprints Sediment Source Assessment Using Sediment Fingerprints
Problem Sediment is one of the most common causes of loss of stream-biologic integrity, whether in suspension in the water column, or as deposition on a stream or lake bottom. Fine-grained silts and clays are of particular concern because they can degrade habitat and often carry phosphorus and (or) other contaminants harmful to humans and aquatic life. Sediment-impaired water bodies...
Authors
Allen C. Gellis, Lillian E. Gorman Sanisaca, Matthew J. Cashman
Sediment fingerprinting to delineate sources of sediment in the agricultural and forested Smith Creek Watershed, Virginia, USA Sediment fingerprinting to delineate sources of sediment in the agricultural and forested Smith Creek Watershed, Virginia, USA
The sediment fingerprinting approach was used to apportion fine‐grained sediment to cropland, pasture, forests, and streambanks in the agricultural and forested Smith Creek, watershed, Virginia. Smith Creek is a showcase study area in the Chesapeake Bay watershed, where management actions to reduce nutrients and sediment are being monitored. Analyses of suspended sediment at the...
Authors
Allen Gellis, Lillian Gorman Sanisaca
Factors influencing fine sediment on stream beds in the Midwestern United States Factors influencing fine sediment on stream beds in the Midwestern United States
Fine sediment (particles
Authors
Christopher Konrad, Allen Gellis
A method to quantify and value floodplain sediment and nutrient retention ecosystem services A method to quantify and value floodplain sediment and nutrient retention ecosystem services
Floodplains provide critical ecosystem services to local and downstream communities by retaining floodwaters, sediments, and nutrients. The dynamic nature of floodplains is such that these areas can both accumulate sediment and nutrients through deposition, and export material downstream through erosion. Therefore, estimating floodplain sediment and nutrient retention should consider the...
Authors
Kristina Hopkins, Gregory Noe, Fabiano Franco, Emily Pindilli, Stephanie Gordon, Marina Metes, Peter Claggett, Allen Gellis, Cliff Hupp, Dianna Hogan
Floodplain trapping and cycling compared to streambank erosion of sediment and nutrients in an agricultural watershed Floodplain trapping and cycling compared to streambank erosion of sediment and nutrients in an agricultural watershed
Floodplains and streambanks can positively and negatively influence downstream water quality through interacting geomorphic and biogeochemical processes. Few studies have measured those processes in agricultural watersheds. We measured inputs (floodplain sedimentation and dissolved inorganic loading), cycling (floodplain soil nitrogen [N] and phosphorus [P] mineralization), and losses...
Authors
Jaimie Gillespie, Gregory Noe, Cliff Hupp, Allen Gellis, Edward R. Schenk
Science and Products
Filter Total Items: 16
Floodplain sedimentation, bank erosion, and biogeochemical cycling of sediment and nutrients in Smith Creek (Virginia) 2012-2015 Floodplain sedimentation, bank erosion, and biogeochemical cycling of sediment and nutrients in Smith Creek (Virginia) 2012-2015
This USGS Data Release represents tabular data for chemical and physical attributes, rates of deposition, erosion, and mineralization of bank and floodplain sediments and soils from five study sites in the Smith Creek watershed between 2012 and 2015. The data release was produced in compliance with the new 'open data' requirements as a way to make the scientific products associated with...
Sediment-sample and climate data for the agricultural and forested parts of Smith Creek watershed, Virginia (2012-2015) Sediment-sample and climate data for the agricultural and forested parts of Smith Creek watershed, Virginia (2012-2015)
This metadata record covers 5 comma delimited ascii files that contain sediment source sample data, sediment target sample data, quantitation limits for samples, and daily temperature data. This data release is a companion to the journal article Sediment fingerprinting to delineate sources of fine-grained sediment in the agricultural and forested Smith Creek watershed, Virginia (2012...
Sediment Source Assessment Tool (Sed_SAT) 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 major sources of sediment in a given...
Radionuclide and Pesticide data for sediment age and source analysis in the Midwest Stream-Quality Assessment Region (2013-2014) Radionuclide and Pesticide data for sediment age and source analysis in the Midwest Stream-Quality Assessment Region (2013-2014)
A study examining the sources and ages of fine-grained bed material (less than 0.063 mm) was conducted for 99 sites in the USGS NAWQA Midwest Stream Quality Assessment (MSQA) during the summer of 2014, including 15 suspended sediment and 5 cropland top soil samples. Bed material samples were analyzed for radionuclides (7Be, 210Pbex, 137Cs) and pesticides (bifenthrin and DDE); suspended...
Filter Total Items: 66
Monthly suspended-sediment apportionment for a western Lake Erie agricultural tributary Monthly suspended-sediment apportionment for a western Lake Erie agricultural tributary
Black Creek, a headwater to the Maumee River and western Lake Erie, is an agricultural basin with a mix of cropland (66%), pasture (19%), and forest (7%) linked by a road network to the rural community. Suspended sediment was collected monthly during the 2018 water year for the main stem and two sub-basins using in-situ, passive samplers that integrated a range of streamflow conditions...
Authors
Tanja Williamson, Edward Dobrowolski, Allen Gellis, Timur Sabitov, Lillian Gorman Sanisaca
Sediment dynamics and implications for management: State of the science from long‐term research in the Chesapeake Bay watershed, USA Sediment dynamics and implications for management: State of the science from long‐term research in the Chesapeake Bay watershed, USA
This review aims to synthesize the current knowledge of sediment dynamics using insights from long‐term research conducted in the watershed draining to the Chesapeake Bay, the largest estuary in the U.S., to inform management actions to restore the estuary and its watershed. The sediment dynamics of the Chesapeake are typical of many impaired watersheds and estuaries around the world...
Authors
Gregory Noe, Matthew Cashman, Katherine Skalak, Allen Gellis, Kristina Hopkins, Douglas Moyer, James Webber, Adam Benthem, Kelly Maloney, John Brakebill, Andrew Sekellick, Michael Langland, Qian Zhang, Gary Shenk, Jennifer Keisman, Cliff Hupp
Pavement alters delivery of sediment and fallout radionuclides to urbanstreams Pavement alters delivery of sediment and fallout radionuclides to urbanstreams
Sediment from urban impervious surfaces has the potential to be an important vector for contaminants, particularly where stormwater culverts and other buried channels draining large impervious areas exit from underground pipes into open channels. To better understand urban sediment sources and their relation to fallout radionuclides, we collected samples of rainfall, urban sediment...
Authors
Allen Gellis, Christopher Fuller, Peter Van Metre, Barbara Mahler, C. Welty, Andrew Miller, Lucas Nibert, Zachary Clifton, Jeremy Malen, J.T. Kemper
Stream corridor sources of suspended sediment and phosphorus from an agricultural tributary to the Great Lakes Stream corridor sources of suspended sediment and phosphorus from an agricultural tributary to the Great Lakes
Fine-grained sediment and phosphorous are major contaminants in the Great Lakes and their tributaries. Plum Creek, Wisconsin (92 km2), a tributary to the Lower Fox River, has a Total Maximum Daily Load (TMDL) requiring reductions of suspended sediment and phosphorus loading by 70% and 77%, respectively. In 2016-18, an integrated sediment fingerprinting and stream corridor-based sediment...
Authors
Faith A. Fitzpatrick, James Blount, Leah Kammel, David Hoover, Allen Gellis, Barbara C. Scudder Eikenberry
Combining sediment fingerprinting with age-dating sediment using fallout radionuclides for an agricultural stream, Walnut Creek, Iowa, USA Combining sediment fingerprinting with age-dating sediment using fallout radionuclides for an agricultural stream, Walnut Creek, Iowa, USA
Purpose The main purpose of this study was to demonstrate the utility of the sediment fingerprinting approach to apportion surface-derived sediment, and then age date that portion using short-lived fallout radionuclides. In systems where a large mass of mobile sediment is in channel storage, age dating provides an understanding of the transfer of sediment through the watershed and the...
Authors
Allen Gellis, Christopher Fuller, Peter Van Metre, Christopher Filstrup, Kevin Cole, Timur Sabitov
Preface—Evaluating the response of critical zone processes to human impacts with sediment source fingerprinting Preface—Evaluating the response of critical zone processes to human impacts with sediment source fingerprinting
1) Background: Critical Zone Processes in the Anthropocene The Earth’s Critical Zone encompasses a suite of interconnected processes in the near-surface lithosphere, pedosphere, biosphere, atmosphere, and hydrosphere (Brantley et al., 2007; Lin, 2010) (Fig. 1). Processes and interactions both within and between these various Critical Zone components supports life-sustaining ecosystem...
Authors
J. Laceby, Allen Gellis, Alexander Koiter, Will Blake, Olivier Evrard
Bank‐derived material dominates fluvial sediment in a suburban Chesapeake Bay watershed Bank‐derived material dominates fluvial sediment in a suburban Chesapeake Bay watershed
Excess fine sediment is a leading cause of ecological degradation within the Chesapeake Bay watershed. To effectively target sediment mitigation measures, it is necessary to identify and quantify the delivery of sediment sources to local waterbodies. This study examines the contributions of sediment sources within Upper Difficult Run, a suburbanized watershed in Fairfax County, Virginia...
Authors
Matthew Cashman, Allen Gellis, Lillian Gorman Sanisaca, Gregory Noe, Vanessa Cogliandro, Anna Baker
Sediment Source Assessment Using Sediment Fingerprints Sediment Source Assessment Using Sediment Fingerprints
Problem Sediment is one of the most common causes of loss of stream-biologic integrity, whether in suspension in the water column, or as deposition on a stream or lake bottom. Fine-grained silts and clays are of particular concern because they can degrade habitat and often carry phosphorus and (or) other contaminants harmful to humans and aquatic life. Sediment-impaired water bodies...
Authors
Allen C. Gellis, Lillian E. Gorman Sanisaca, Matthew J. Cashman
Sediment fingerprinting to delineate sources of sediment in the agricultural and forested Smith Creek Watershed, Virginia, USA Sediment fingerprinting to delineate sources of sediment in the agricultural and forested Smith Creek Watershed, Virginia, USA
The sediment fingerprinting approach was used to apportion fine‐grained sediment to cropland, pasture, forests, and streambanks in the agricultural and forested Smith Creek, watershed, Virginia. Smith Creek is a showcase study area in the Chesapeake Bay watershed, where management actions to reduce nutrients and sediment are being monitored. Analyses of suspended sediment at the...
Authors
Allen Gellis, Lillian Gorman Sanisaca
Factors influencing fine sediment on stream beds in the Midwestern United States Factors influencing fine sediment on stream beds in the Midwestern United States
Fine sediment (particles
Authors
Christopher Konrad, Allen Gellis
A method to quantify and value floodplain sediment and nutrient retention ecosystem services A method to quantify and value floodplain sediment and nutrient retention ecosystem services
Floodplains provide critical ecosystem services to local and downstream communities by retaining floodwaters, sediments, and nutrients. The dynamic nature of floodplains is such that these areas can both accumulate sediment and nutrients through deposition, and export material downstream through erosion. Therefore, estimating floodplain sediment and nutrient retention should consider the...
Authors
Kristina Hopkins, Gregory Noe, Fabiano Franco, Emily Pindilli, Stephanie Gordon, Marina Metes, Peter Claggett, Allen Gellis, Cliff Hupp, Dianna Hogan
Floodplain trapping and cycling compared to streambank erosion of sediment and nutrients in an agricultural watershed Floodplain trapping and cycling compared to streambank erosion of sediment and nutrients in an agricultural watershed
Floodplains and streambanks can positively and negatively influence downstream water quality through interacting geomorphic and biogeochemical processes. Few studies have measured those processes in agricultural watersheds. We measured inputs (floodplain sedimentation and dissolved inorganic loading), cycling (floodplain soil nitrogen [N] and phosphorus [P] mineralization), and losses...
Authors
Jaimie Gillespie, Gregory Noe, Cliff Hupp, Allen Gellis, Edward R. Schenk