Related Topics: Water Research

Water Research Products in the Science Inventory

Records 1 to 25 of 3263

Destabilization of Lead Pipe Scales in a Long-Term Vacant Home in Cincinnati (PRESENTATION)
this presentation covers an ongoing study at a Cincinnati house, following the progression of lead release from a lead service line with different amounts of stagnation time and water use. This presentation is essentially the same as the talk cleared for AWWA ACE 2017, with some...
Using field data to assess the tolerance of freshwater fish to elevated ionic concentrations (PRESENTATION)
We used field data of fish occurrences and specific conductivity to assess the tolerance of freshwater fish to elevated ions. The concentration at which a species was expected to no longer be observed [the extirpation concentration (XC95)] was identified from the 95th percentile ...
Analysis of human mitochondrial DNA sequences from fecally polluted environmental waters as a tool to study population diversity (JOURNAL)
Mitochondrial signature sequences have frequently been used to study the demographics of many different populations around the world. Traditionally, this requires obtaining samples directly from individuals which is cumbersome, time consuming and limited to the number of individu...
THREAT ENSEMBLE VULNERABILITY ASSESSMENT- SENSOR PLACEMENT OPTIMIZATION TOOL (TEVA-SPOT) GRAPHICAL USER INTERFACE (PUBLISHED REPORT)
software and manual
Investigation clogging dynamic of permeable pavement systems using embedded sensors (JOURNAL)
Permeable pavement is a stormwater control measure commonly selected in both new and retrofit applications. However, there is limited information about the clogging mechanism of these systems that effects the infiltration. A permeable pavement site located at the Seitz Elementary...
An Isotopic view of water and nitrogen transport through the vadose zone. (PRESENTATION)
Groundwater nitrate contamination affects thousands of households in Oregon’s southern Willamette Valley and many more across the Pacific Northwest. The southern Willamette Valley Groundwater Management Area (SWV GWMA) was established in 2004 due to nitrate levels in the g...
Inferring the source of evaporated waters using stable H and O isotopes (PRESENTATION)
Stable isotope ratios of H and O are widely used to identify the source of water, e.g., in aquifers, river runoff, soils, plant xylem, and plant-based beverages. In situations where the sampled water is partially evaporated, its isotope values will have evolved along an evaporati...
Status of Lake Superior’s lower trophic levels (PRESENTATION)
To meet the Fish Community Objectives set for Lake Superior by the Great Lakes Fishery Commission, a key factor is the condition of the lower food web that supports productivity of fisheries. To assess the condition of lower trophic levels and inform the Lake Superior Technical C...
An Overview of Rainfall-Runoff Model Types (PUBLISHED REPORT)
This report explores rainfall-runoff models, their generation methods, and the categories under which they fall. Runoff plays an important role in the hydrological cycle by returning excess precipitation to the oceans and controlling how much water flows into stream systems. Mode...
Calcification continues in Caribbean reef-building corals at high pCO2 levels in a recirculating ocean acidification exposure system (JOURNAL)
Projected increases in ocean pCO2 levels are anticipated to affect calcifying organisms more rapidly and to a greater extent than other marine organisms. The effects of ocean acidification (OA) have been documented in numerous species of corals in laboratory studies, largely test...
The Role of Shellfish Aquaculture in Reduction of Eutrophication in an Urban Estuary (JOURNAL)
Land-based management has reduced nutrient discharges; however, many coastal waterbodies remain impaired. Oyster “bioextraction” of nutrients and how oyster aquaculture might complement existing management measures in urban estuaries was examined in Long Island Sound,...
The Roles of Biofilm Conductivity and Donor Substrate Kinetics in a Mixed-Culture Biofilm Anod (JOURNAL)
We experimentally assessed kinetics and thermodynamics of electron transfer (ET) from the donor substrate (acetate) to the anode for a mixed-culture biofilm anode. We interpreted the results with a modified biofilm-conduction model consisting of three ET steps: (1) intracellular...
Assessing the Nation's Coastal Waters....Better (PRESENTATION)
The USEPA has been assessing estuarine and coastal condition in the United States since 1999 via the National Coastal Assessment (NCA) and National Aquatic Resources Surveys (NARS) programs. Approximately 1500 randomly selected coastal sites were surveyed annually during summers ...
Understanding the Impacts and Meaning of Maintaining Detectable Disinfection Residuals in Drinking Water Distribution Systems: Controlling Waterborne Pathogens, Disinfection Byproducts, Organic Chloramines, and Nitrification (PRESENTATION)
: EPA Region 6, in collaboration with the Office of Research and Development and Office of Water (OW) in Cincinnati, Ohio, and the Louisiana Department of Health and Hospitals (LDHH), proposes a drinking water research project to understand how maintaining various drinking water...
Retrospective Case Study in Northeastern Pennsylvania, Study of the Potential Impacts of Hydraulic Fracturing On Drinking Water Resources (PUBLISHED REPORT)
This report describes the retrospective case study for northeastern Pennsylvania, which was conducted in Bradford and Susquehanna Counties where some of the most intensive unconventional gas production from the Devonian-age Marcellus Shale has occurred. Gas production from the M...
Retrospective Case Study in Southwestern Pennsylvania, Study of the Potential Impacts of Hydraulic Facturing on Drinking Water Resources (PUBLISHED REPORT)
This report describes the retrospective case study for southwestern Pennsylvania, which was conducted in Amwell, Cross Creek, Hopewell, and Mount Pleasant Townships in Washington County, locations that have witnessed unconventional gas production from the Devonian-age Marcellus S...
Retrospective Case Study in Killdeer, North Dakota, Study of the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources. (PUBLISHED REPORT)
This report describes the retrospective case study conducted near Killdeer, Dunn County, North Dakota. The Killdeer study area is the location of historical oil and gas production, with current unconventional oil and gas production occurring in the late Devonian/early Mississipp...
Retrospective Case Study in Wise County, Texas, Study of the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources (PUBLISHED REPORT)
This report describes the retrospective case study in north central Texas, conducted at three locations in Wise County where both conventional and unconventional gas production occurred in the past. Currently unconventional gas production occurs from the Mississippian-aged Barne...
Retrospective Case Study in the Raton Basin, Colorado, Study of hte Potential Impacts of Hydraulic Fracturing on Drinking Water Resources. (PUBLISHED REPORT)
This report describes the retrospective case study that was conducted in the Colorado portion of the Raton Basin, located within Las Animas and Huerfano counties. These locations are the focus of unconventional gas production of coalbed methane (CBM) from several coal-bearing st...
CHALLENGES IN MAINTAINING DRINKING WATER QUALITY AT THE TAP: CONTAMINATION WITH TOXIC LEAD (PRESENTATION)
Aging drinking water infrastructure in the US was given a grade of D (poor) by the American Society of Civil Engineers, and was voted as the most urgent of all societal infrastructure challenges. Legacy lead pipe, leaded solder and/or leaded brass are a particularly notorious old...
Green infrastructure and its catchment-scale effects: an emerging science (JOURNAL)
Urbanizing environments alter the hydrological cycle by redirecting stream networks for stormwater and wastewater transmission and increasing impermeable surfaces. These changes thereby accelerate the runoff of water and its constituents following precipitation events, alter evap...
Quantifying Spatially Integrated Floodplain and Wetland Systems for the Conterminous US (PRESENTATION)
Wetlands interact with other waters across a variable connectivity continuum, from permanent to transient, from fast to slow, and from primarily surface water to exclusively groundwater flows. Floodplain wetlands typically experience fast and frequent surface and near-surface gro...
Landscape Conservation of Aquatic Habitats Promotes Watershed-scale Biological, Biogeochemical, and Hydrological Functions (PRESENTATION)
Wetlands are exceptionally productive landscape features that provide critical habitat for endemic species, threatened/endangered and migratory animals, store floodwaters and maintain baseflows in stream systems, recharge groundwaters, and biogeochemically and physically affect n...
A synoptic survey of microbial respiration, organic matter decomposition, and carbon efflux in U.S. streams and rivers (JOURNAL)
We analyzed microbial respiration and ecoenzyme activities related to organic matter processing in 1879 streams and rivers across the continental US as part of the USEPA’s 2008-2009 National Rivers and Streams Assessment. Ecoenzymatic stoichiometry was used to construct mod...
The Hydrologic Implications Of Unique Urban Soil Horizon Sequencing On The Functions Of Passive Green Infrastructure (PRESENTATION)
Green infrastructure represents a broad set of site- to landscape-scale practices that can be flexibly implemented to increase sewershed retention capacity, and can thereby improve on the management of water quantity and quality. Although much green infrastructure presents as for...