Jennifer L Rapp

In 2015, the second of several Regional Stream Quality Assessments (RSQA) was done in the southeastern United States. The Southeast Stream Quality Assessment (SESQA) was a study by the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA) project. One of the objectives of the RSQA, and thus the SESQA, is to characterize the relationships between water-quality stressors and stream ecology and subsequently determine the relative effects of these stressors on aquatic biota within the streams (Van Metre and Journey, 2014). To meet this objective, a framework of fundamental geospatial data was required to develop physical and anthropogenic characteristics of the study region, sampled sites and corresponding...

Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Ecology, National Water Quality Program, Riparian Zones, Sampling sites, USGS Science Data Catalog (SDC), All tags... Water Quality, Water Quality, Water Resources, Watersheds, Fewer tags

Fish and Benthic Macroinvertebrate Flow-Ecology Regression Summary Statistics for Virginia

Data provided from the Virginia Department of Environmental Quality (DEQ) including simulated values of 72 hydrologic metrics, or indicators of hydrologic alteration (IHA), 37 fish metrics, and 64 benthic invertebrate metrics were reviewed to assess significant flow-ecology relations that may be developed. Hydrologic alteration was represented by simulation of streamflow record for a pre-water-withdrawal condition (baseline) without dams or developed land, compared to the simulated recent-flow condition (2008) including withdrawals, dams and altered landscape to calculate a percent-alteration of flow. Biological samples used represent a median condition of the biological community from 1972 to 2010. This study reviewed...

Categories: Data; Tags: Ecohydrology, Ecology, Hydrologic Alteration, USGS Science Data Catalog (SDC), Virginia, All tags... Water Resources, benthic ecosystems, biota, environment, fishery management, inlandWaters, Fewer tags

The hydrologic regime of rivers and streams is a major determinant of habitat quality for fish and aquatic invertebrates. Long-term streamflow data were compiled and multidecadal streamflow trends and ecological flow (EFlow) statistics were calculated in support of the United States Geological Survey (USGS) Chesapeake Bay Science Initiative toward understanding fish habitat and health in the Chesapeake Bay Watershed (CBWS). A dataset comprising all streamgages (n = 409) reporting daily means of streamflow within the CBWS and remaining active as of September 30, 2018 (the end of Water Year [WY] 2018), independent of streamgage installation date, was retrieved from the USGS National Water Information System (NWIS)....

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chesapeake Bay Watershed, Delaware, EFlow, EFlow statistics, EGRET, All tags... Ecology, Hydrology, Maryland, New York, Pennsylvania, USGS Science Data Catalog (SDC), United States, Virginia, Washington DC, West Virginia, discharge, ecological flows, flow, stream flow trends, streamflow, time series, Fewer tags

Potomac River Watershed Accumulated Wastewater Ratios and Predicted Environmental Concentrations

Treated effluent from wastewater treatment plants (WWTPs) contains contaminants not fully removed during the treatment process and that may pose environmental health risks when discharged to surface waters. This data release presents inputs for and results from a wastewater reuse model that used data compiled from several sources to calculate the following estimates for each non-tidal, non-coastline, initialized National Hydrography Dataset Version 2.1 (NHDPlus V2) stream segment in the Potomac River watershed: (1) accumulated wastewater as a percent of total streamflow (ACCWW%); and (2) predicted environmental concentrations (PECs, in micrograms per liter) of 69 municipal effluent-derived contaminants. ACCWW% values...

Categories: Data; Tags: Chesapeake Bay Watershed, Environmental Health, Flow accumulation, Maryland, Pennsylvania, All tags... Potomac River, USGS Science Data Catalog (SDC), Virginia, Washington, D.C., Wastewater, Water Quality, Water Resources, West Virginia, river reaches, streamflow, surface water quality, water chemistry, water quality, water resources, water use, Fewer tags

Topobathymetric Digital Elevation Model (TBDEM) of the Eastern Shore Peninsula of Virginia and adjacent parts of Maryland with a horizontal resolution of 1 meter and vertical resolution of 1 centimeter

This topobathymetric digital elevation model (TBDEM) represents the topography and bathymetry for the Eastern Shore peninsula of Virginia, including Accomack and Northampton counties, and extending into Worcester and Somerset counties in Maryland. The TBDEM has a horizontal grid spacing of 1 meter and vertical units of 1 (integer) centimeter. This dataset combines U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center Coastal National Elevation Database topobathymetric DEM (CoNED TBDEM) data with data from the USGS Northern Atlantic Coastal Plain DEM, the latter of which were used to extend the bathymetric surface further offshore. In some areas, National Map 3D Elevation Program (3DEP)...

Categories: Data; Types: Data, Raster; Tags: Accomack County, Digital Elevation Model (DEM)., Groundwater and Streamflow Information Program, Maryland, Northampton County, All tags... Northern Atlantic Coastal Plain, Somerset County, USGS Science Data Catalog (SDC), Virginia, Worcester County, bathymetry, digital elevation models, elevation, elevational gradient, hydrogeologic framework, inlandWaters, land surface characteristics, topography, Fewer tags