Publications
The USGS publishes peer-reviewed reports and journal articles which are used by Chesapeake Bay Program resource managers and policy makers to make science-based decisions for ecosystem conservation and restoration. Use the Search box below to find publications on selected topics.
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Filter Total Items: 963
Rising air and stream-water temperatures in Chesapeake Bay region, USA Rising air and stream-water temperatures in Chesapeake Bay region, USA
Monthly mean air temperature (AT) at 85 sites and instantaneous stream-water temperature (WT) at 129 sites for 1960–2010 are examined for the mid-Atlantic region, USA. Temperature anomalies for two periods, 1961–1985 and 1985–2010, relative to the climate normal period of 1971–2000, indicate that the latter period was statistically significantly warmer than the former for both mean AT...
Authors
Karen C. Rice, John D. Jastram
A landscape-based reconnaissance survey of estrogenic activity in streams of the upper Potomac, upper James,and Shenandoah Rivers, USA A landscape-based reconnaissance survey of estrogenic activity in streams of the upper Potomac, upper James,and Shenandoah Rivers, USA
Endocrine-disrupting compounds (EDCs) are becoming of increasing concern in waterways of the USA and worldwide. What remains poorly understood, however, is how prevalent these emerging contaminants are in the environment and what methods are best able to determine landscape sources of EDCs. We describe the development of a spatially structured sampling design and a reconnaissance survey...
Authors
John A. Young, Luke R. Iwanowicz, Adam J. Sperry, Vicki Blazer
Effects of distributed and centralized stormwater best management practices and land cover on urban stream hydrology at the catchment scale Effects of distributed and centralized stormwater best management practices and land cover on urban stream hydrology at the catchment scale
Urban stormwater runoff remains an important issue that causes local and regional-scale water quantity and quality issues. Stormwater best management practices (BMPs) have been widely used to mitigate runoff issues, traditionally in a centralized manner; however, problems associated with urban hydrology have remained. An emerging trend is implementation of BMPs in a distributed manner...
Authors
John V. Loperfido, Gregory B. Noe, S. Taylor Jarnagin, Dianna M. Hogan
Educational webtool illustrating groundwater age effects on contaminant trends in wells Educational webtool illustrating groundwater age effects on contaminant trends in wells
No abstract available.
Authors
John Karl Böhlke, Bryant C. Jurgens, David J. Uselmann, Sandra M. Eberts
Late Holocene sea level variability and Atlantic Meridional Overturning Circulation Late Holocene sea level variability and Atlantic Meridional Overturning Circulation
Pre-twentieth century sea level (SL) variability remains poorly understood due to limits of tide gauge records, low temporal resolution of tidal marsh records, and regional anomalies caused by dynamic ocean processes, notably multidecadal changes in Atlantic Meridional Overturning Circulation (AMOC). We examined SL and AMOC variability along the eastern United States over the last 2000...
Authors
Thomas M. Cronin, Jesse R. Farmer, R. E. Marzen, E. Thomas, J.C. Varekamp
Reproductive health indicators of fishes from Pennsylvania watersheds: association with chemicals of emerging concern Reproductive health indicators of fishes from Pennsylvania watersheds: association with chemicals of emerging concern
Fishes were collected at 16 sites within the three major river drainages (Delaware, Susquehanna, and Ohio) of Pennsylvania. Three species were evaluated for biomarkers of estrogenic/antiandrogenic exposure, including plasma vitellogenin and testicular oocytes in male fishes. Smallmouth bass Micropterus dolomieu, white sucker Catostomus commersonii, and redhorse sucker Moxostoma species...
Authors
V. S. Blazer, D.D. Iwanowicz, H.L. Walsh, A.J. Sperry, L. R. Iwanowicz, D.A. Alvarez, R.A. Brightbill, G. Smith, W.T. Foreman, R. Manning
Streamflow, water quality, and aquatic macroinvertebrates of selected streams in Fairfax County, Virginia, 2007-12 Streamflow, water quality, and aquatic macroinvertebrates of selected streams in Fairfax County, Virginia, 2007-12
Efforts to mitigate the effects of urbanization on streams rely on best management practices (BMPs) that are implemented with the intent of reducing and retaining stormwater runoff. A cooperative monitoring effort between the U.S. Geological Survey and Fairfax County, Virginia, was initiated in 2007 to assess the condition of county streams and document watershed-scale responses to the
Authors
John D. Jastram
Chesapeake Bay hypoxic volume forecasts and results: June 10, 2014 Chesapeake Bay hypoxic volume forecasts and results: June 10, 2014
The 2014 Forecast - Given the average Jan-May 2014 total nitrogen load of 200,165 kg/day, this summer’s hypoxia volume forecast is 8.2 km3, slightly larger than average size for the period of record and the observed size last year.
Authors
Donald Scavia, Mary Anne Evans
Integrating Federal and State data records to report progress in establishing agricultural conservation practices on Chesapeake Bay farms Integrating Federal and State data records to report progress in establishing agricultural conservation practices on Chesapeake Bay farms
In response to the Executive Order for Chesapeake Bay Protection and Restoration (E.O. #13508, May 12, 2009), the U.S. Geological Survey (USGS) took on the task of acquiring and assessing agricultural conservation practice data records for U.S. Department of Agriculture (USDA) programs, and transferred those datasets in aggregated format to State jurisdictional agencies for use in...
Authors
W. Dean Hively, Olivia H. Devereux, Peter R. Claggett
Land subsidence and relative sea-level rise in the southern Chesapeake Bay region Land subsidence and relative sea-level rise in the southern Chesapeake Bay region
The southern Chesapeake Bay region is experiencing land subsidence and rising water levels due to global sea-level rise; land subsidence and rising water levels combine to cause relative sea-level rise. Land subsidence has been observed since the 1940s in the southern Chesapeake Bay region at rates of 1.1 to 4.8 millimeters per year (mm/yr), and subsidence continues today. This land...
Authors
Jack Eggleston, Jason Pope
Evidence for high salinity of Early Cretaceous sea water from the Chesapeake Bay crater Evidence for high salinity of Early Cretaceous sea water from the Chesapeake Bay crater
High salinity groundwater more than 1000 metres deep in the Atlantic Coastal Plain of the United States has been documented in several locations1,2, most recently within the 35 million-year-old Chesapeake Bay impact crater3,4,5. Suggestions for the origin of increased salinity in the crater have included evaporite dissolution6, osmosis6, and evaporation from heating7 associated with the...
Authors
Ward E. Sanford, Michael W. Doughten, Tyler B. Coplen, Andrew G. Hunt, Thomas D. Bullen
Quantifying groundwater’s role in delaying improvements to Chesapeake Bay water quality Quantifying groundwater’s role in delaying improvements to Chesapeake Bay water quality
A study has been undertaken to determine the time required for the effects of nitrogen-reducing best management practices (BMPs) implemented at the land surface to reach the Chesapeake Bay via groundwater transport to streams. To accomplish this, a nitrogen mass-balance regression (NMBR) model was developed and applied to seven watersheds on the Delmarva Peninsula. The model included the
Authors
Ward E. Sanford, Jason P. Pope