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: 901
Shore erosion as a sediment source to the tidal Potomac River, Maryland and Virginia
The shoreline of the tidal Potomac River attained its present form as a result of the Holocene episode of sea-level rise; the drowned margins of the system are modified by wave activity in the shore zone and by slope processes on banks steepened by basal-wave erosion. Shore erosion leaves residual sand and gravel in shallow water and transports silt and clay offshore to form a measurable component
Authors
Andrew J. Miller
Loads of suspended sediment and nutrients from local nonpoint sources to the tidal Potomac River and Estuary, Maryland and Virginia, 1979-81 water years
Loads of suspended sediment, phosphorus, nitrogen, biochemical oxygen demand, and dissolved silica discharged to the tidal Potomac River and Estuary during the !979-81 water years from three local nonpoint sources have been calculated. The loads in rain falling directly upon the tidal water surface and from overflows of the combined sewer system of the District of Columbia were determined from ava
Authors
R. Edward Hickman
Transport of dissolved and suspended material by the Potomac River at Chain Bridge, at Washington, D.C., water years 1978-81
The measuring station Potomac River at Chain Bridge at Washington, D.C., is located at the upstream end of the tidal Potomac River. Water-quality data were collected intensively at this site from December 1977 through September 1981 as part of a study of the tidal Potomac River and Estuary. Analysis of water-discharge data from the long-term gage at Little Falls, just up stream from Chain Bridge,
Authors
Stephen F. Blanchard, D. C. Hahl
Neutralizing activity against infectious pancreatic necrosis virus in striped bass, Morone saxatilis, from the Chesapeake Bay
No abstract available.
Authors
S.J. Wechsler, P. E. McAllister, F. M. Hetrick
Planning and design for wildlife conservation in new residential developments--Columbia, Maryland
No abstract available.
Authors
A. D. Geis
Data on the distribution and abundance of submersed aquatic vegetation in the tidal Potomac River, Maryland, Virginia, and the District of Columbia, 1985
This report summarizes data on the distribution and abundance of submersed aquatic vegetation collected in the tidal Potomac River during 1985. Plant species were identified and dry weight determined for selected sites. Information on competition between Hydrilla verticillata and other species was measured. Water-quality characteristics measured include temperature, specific conductance, dissolved
Authors
N. B. Rybicki, R. T. Anderson, J.M. Shapiro, C.L. Jones, Virginia Carter
Detection of erosion events using 10Be profiles: example of the impact of agriculture on soil erosion in the Chesapeake Bay area (U.S.A.)
10Be concentration, total carbon and grain-size were measured in cores collected in undisturbed estuarine sediments of three tributaries of the Chesapeake Bay. These cores were previously studied by Davis [1] and Brush [2,3] for pollen content, age and sedimentation rate. In this work, we compare the results obtained for these various analyses.In the cores, we observed two increases in10Be concent
Authors
J. N. Valette-Silver, L. Brown, M. Pavich, J. Klein, R. Middleton
HYDRODYNAMIC SIMULATION OF THE UPPER POTOMAC ESTUARY.
Hydrodynamics of the upper extent of the Potomac Estuary between Indian Head and Morgantown, Md. , are simulated using a two-dimensional model. The model computes water-surface elevations and depth-averaged velocities by numerically integrating finite-difference forms of the equations of mass and momentum conservation using the alternating direction implicit method. The fundamental, non-linear, un
Authors
Raymond W. Schaffranck
Effect of discharge on the chlorophyll a distribution in the tidally-influenced Potomac River
In the tidal Potomac River, high river discharges during the spring are associated with high chlorophylla concentrations in the following in the following summer, assuming that summertime light and temperature conditions are favorable. Spring floods deliver large loads of particulate N and P to the tidal river. This particulate N and P could be mineralized by bacteria to inorganic N and P and rele
Authors
J. P. Bennett, J.W. Woodward, D.J. Shultz
Resurgence of submersed aquatic macrophytes in the tidal Potomac River, Maryland, Virginia, and the District of Columbia
A 1978–81 survey of submersed aquatic macrophytes in the tidal Potomac River showed that there were virtually no plants in the freshwater tidal river between Chain Bridge and Quantico, Virginia, decades after the disappearance of plants in the late 1930’s. Plant populations were monitored in subsequent years (1983–85) using qualitative shoreline surveys and quantitative resampling of the original
Authors
V. Carter, N. Rybicki
Sediment data for computation of deposition rates in the tidal Potomac system, Maryland and Virginia
Sixty-two cores ranging in length from 33 to 1002 cm were collected from the tidal Potomac system and from selected tributaries downstream from the local head-of-tides between June 1978 and July 1981. Segments from selected depths below the sediment surface have been analyzed for a variety of constituents, including lead-210, trace metals, nutrients, and particle size. The core sites were position
Authors
J.L. Glenn, E.A. Martin, C. A. Rice