Filter Total Items: 137
Date published: June 24, 2017
Status: Active

Hampton Roads Benchmark Monitoring Network

The southern Chesapeake Bay region is experiencing land subsidence along with rising sea levels, both of which can contribute to coastal flooding. The rates at which these two processes are occurring are not exactly known. Mapping of land elevation change requires ground-truth survey data at multiple locations that are accurate and precise. With the exception of a few CORS sites that have...

Date published: June 21, 2017
Status: Active

Great Dismal Swamp carbon dynamics

The Land Use and Carbon Scenario Simulator (LUCAS) model was used to develop a baseline carbon (C) budget for the Great Dismal Swamp, VA., using an annualized Stock-Flow approach. The model infrastructure will be used going forward to assist with future land management and ecosystem services assessments.



Date published: June 15, 2017
Status: Active

Hydrologic Monitoring and Analysis to Support Water Resource Management in the City of Roanoke

The U.S. Geological Survey, partnering with the City of Roanoke and Virginia Tech, are working to monitor the water volume and quality in streams throughout the City of Roanoke. There are currently six monitoring stations within the city. Water-quality data are collected at five stations through real-time monitors and manual sampling to support the estimation of suspended sediment loads. The...

Contacts: James Webber
Date published: May 12, 2017
Status: Active

Climate Change in the Chesapeake Bay Watershed: Effects on Riverine Discharge, Ecosystems, and Water Quality

The 64,000-square mile watershed that drains to the Chesapeake Bay is highly populated and has diverse land use, including forested, agricultural, and urbanized areas. Increased precipitation in the eastern United States over the last 100 years has affected stream flow and thus the loading of pollutants delivered to the bay. Such pollutants as suspended sediment and dissolved phosphorus and...

Contacts: Karen C Rice
Date published: May 6, 2017
Status: Active

USGS-VDOT Bridge Scour Pilot Study

Cost effective and safe highway bridge designs are required to ensure the long-term sustainability of Virginia’s road systems. The water flows that, over time, scour streambed sediments from bridge piers inherently affect bridge safety and design costs. To ensure safety, bridge designs must anticipate streambed scour at bridge piers over the lifespan of a bridge. Until recently Federal Highway...

Contacts: Samuel H Austin, John H. Matthews, PE
Date published: May 1, 2017
Status: Active

GIS-based landscape analysis to identify sources of endocrine disrupting chemicals

A key component to assessing the contaminant exposure pathways in streams and rivers of the Chesapeake Bay is using GIS-based landscape analysis to identify sources of endocrine disrupting chemicals. Municipal and industrial wastewater treatment plant (WWTP) discharges are potentially major sources of EDCs to streams, and therefore understanding the de facto wastewater reuse (represented as...

Date published: April 27, 2017
Status: Active

Summary of Nutrient and Sediment Loads and Trends in the Cheseapeake Watershed

Changes in nitrogen, phosphorus, and suspended-sediment loads in rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the Chesapeake Bay Nontidal Water-Quality Monitoring Network (NTN). These results are used to help assess efforts to decrease nutrient and sediment loads being delivered to the bay. Additional information for each monitoring station is...

Date published: April 27, 2017
Status: Completed

Load and Trends Results Through Water Year 2015

Changes in nitrogen, phosphorus, and suspended-sediment loads in rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the nine Chesapeake Bay River Input Monitoring (RIM) stations.  

Date published: January 24, 2017
Status: Active

USGS works with academic and CBP partners to summarize science on water-quality

Pollution-reducing practices can improve water quality in the Chesapeake Bay and its rivers and streams, according to new research from the Chesapeake Bay Program partnership. In a report released today, a number of case studies show that “best management practices”—including upgrading wastewater treatment plants, lowering vehicle and power plant emissions and reducing runoff from farmland—...

Date published: December 9, 2016
Status: Active

Managing the Extinction Risk of the Shenandoah Salamander

The Shenandoah salamander is an endangered salamander that is at risk of extinction due to its small, high-elevation range, competition with the co-occurring red-backed salamander, and the predicted future climate in the Appalachian mountain range. We are working with multiple partners to understand the current status of the species, predict future extinction risk, and engage stakeholders in a...

Date published: September 30, 2016
Status: Active

Appalachian Plateau Groundwater Availablity Study

Pennsylvanian- and Mississippian-age aquifers occupy approximately 86,000 square-miles in the Appalachian Plateaus Physiographic Province of Pennsylvania, Ohio, Maryland, Virginia, West Virginia, Kentucky, Tennessee, and Alabama. As one of several USGS Regional Groundwater Studies, the primary goal of this study is to provide a regional understanding of groundwater flow and availability in the...