The U.S. Geological Survey (USGS) ArcMap Sediment Classification Tool is a custom toolbar that extends the Environmental Systems Research Institute (ESRI) ArcGIS 9.2 Desktop application to aid in the analysis of seabed sediment classification. The tool uses as input either a

by G. Douglas Glysson and John R. Gray, 1997, in, Proceedings of the U.S. Geological Survey (USGS) Sediment Workshop, February 4-7, 1997, Reston, VA, and Harpers Ferry, WV. Terms of Reference (PDF 12KB) Prospectus of the Subcommittee on Sedimentation. Memorandum Announcing Expanded Membership Opportunities, dated October 17, 2003

The U.S. Geological Survey Sea Floor Stress and Sediment Mobility Database contains estimates of wave-current bottom stress and sediment mobility for the U.S. Atlantic and Gulf Coast continental shelf regions. This USGS database provides information to address issues in coastal and offshore areas where the degree and/or frequency of sediment ...

National Geochemical Database: Sediment. Geochemistry of sediments from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are of stream sediment in the continental US and Alaska.

The Geomorphology and Sediment Transport Laboratory (GSTL) is a U.S. Geological Survey (USGS) facility located in Golden, Colorado on the eastern side of North Table Mountain. The USGS has a long and distinguished record of scientific research on flow and sediment transport in rivers; this lab represents a continued commitment to basic and ...

The USGS, in collaboration with other federal and state government agencies, industry, and academia, is conducting the National Geochemical Survey (NGS) to produce a body of geochemical data for the United States based primarily on stream sediments, analyzed using a consistent set of methods. These data will compose a complete, national-scale ...

USGS Chesapeake Bay Loads Summary. Summary of Nitrogen, Phosphorus, and Suspended-Sediment Loads and Trends Measured at the Chesapeake Bay Nontidal Network Stations for Water Years 2009–2018. Prepared by Douglas L. Moyer and Joel D. Blomquist, U.S. Geological Survey. Download PDF version of Loads and Trends Summary.

The U.S. Geological Survey (USGS), in cooperation with the PRASA, conducted a bathymetric survey of the Lago La Plata reservoir during March and April 2015. The hydrographic survey was designed to provide an update of the reservoir storage capacity and sedimentation rate. Areas with substantial sediment accumulation are also discussed in this ...

USGS Federal Interagency Sedimentation Project - Provide, identify, and evaluate tools and techniques for accurate, standardized, calibrated, cost-efficient, and safe measurement and analysis of fluvial sediment properties and transport.

The U.S. Geological Survey conducted a sedimentation survey of Lago Lucchetti, Yauco, Puerto Rico, in 2013–14 in cooperation with the Puerto Rico Aqueduct and Sewer Authority. The survey updated a previous survey, conducted in 2000, and provided accurate information regarding reservoir storage capacity and sedimen­tation rate using bathymetric techniques and a global positioning system ...

The U.S. Geological Survey (USGS) does quite a lot of work across the country measuring how much sediment is transported by streams. To do this, both the amount of water flowing past a site (streamflow or flow) and the amount of sediment in that water (sediment concentration) must be measured.

Geochemistry of sediments from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are of stream sediment in the continental US and Alaska.

Subsequently, Dr. Robert R. Stallard and David Mixon (Stallard et al., 2001) of the U.S. Geological Survey (USGS) utilized the USGS EROS Data Center's copy of the RESIS database to assist in an evaluation of sediment and carbon storage within the Mississippi River Basin. As part of this effort, RESIS was transferred to a desktop computer ...

0.5-m Bathymetric Grid of National Oceanic and Atmospheric Administration (NOAA) Survey H11077 in the Vicinity of Woods Hole, Massachusetts (H11077_05GEO, Geographic) The U.S. Geo

U.S. Geological Survey Fact Sheet 087-00, 4 p. Rapid industrialization since the mid-19th century has produced a large quantity and a wide variety of chemical wastes. Many relatively non-biodegradable chemicals originating from these wastes have spread throughout the environment, into water, soil and sediment.

We developed a conceptual model and suspended sediment budget for a 38 km reach of the fifth-order South River, ia, for the past 75 yr. Bedrock, terraces, and alluvial fans confine 64% of the channel's lateral boundaries, while bedrock exposures impose vertical confinement along 37% of the channel. Bedrock exposures in the bed separate pools and riffles developed in gravelly bed ...

Because of the importance of the reservoir to the North Coast Superaqueduct, the U.S. Geological Survey (USGS), in cooperation with PRASA, conducted a sedimentation survey of Lago Dos Bocas in January 2009. The results of this survey were used to estimate the useful life and the firm yield of the reservoir, and evaluate the need to dredge the ...

contour lines from the U.S. Geological Survey quadrangle (USGS quad) maps. The USGS quads of the reservoir area were developed from aerial photography obtained in 1973. The new topographic map of Enders Reservoir is a combination of digitized contours and 1997 underwater measured topography.

In August 2019, the U.S. Geological Survey, in cooperation with the Puerto Rico Electric Power Authority, conducted a bathymetric survey of Lago Patillas to update stage-volume data in order to determine the sediment infill rates and to generate a bathymetry map. Water-depth data were collected along predefined lines using single-beam depth sounder and Differential Global Positioning …

These and subsequent daily-value USGS suspended-sediment data are entered into the NWISWeb data base as the data become available. For more information about the data collected, you may follow this link to Chapter 2. Water-Quality System of the User's Manual for the National Water Information System of the U.S. Geological Survey.

The Subcommittee on Sedimentation seeks additional or revised quality-assured sediment-survey information to improve and expand RESSED. Technical support for this Web site is provided by the U.S. Geological Survey .

topography determined by digitized contour lines from the U.S. Geological Survey quadrangle (USGS quad) maps. The USGS quads of the reservoir area were developed from aerial photography obtained in 1965. The new topographic map of Hugh Butler Lake is a combination of digitized contours and 1997 underwater measured topography.

Sediment Transport Curves, Doug Glysson, US Geological Survey Open-File Report 87-218, 1987 Ultrasonic Measurement of Suspended Sediment, US Geological Survey Bulletin 1141-A, 1962, Prepared in Cooperation with the Federal Inter-Agency Sedimentation Project

The U.S. Geological Survey, in cooperation with the Puerto Rico Electric Power Authority, conducted a sedimentation survey of Lago Guayabal in 2017 to determine reservoir infill sedimentation rates, generate a bathymetric map of the bottom elevations of the reservoir, and create a stage-volume relation. The original (1913) capacity of Lago Guayabal was 11.82 million cubic meters, …

When waterfowl (Anatidae) ingest sediment as they feed, they are exposed to the environmental contaminants in those sediments. The rate of ingestion may be key to assessing environmental risk. Rates of sediment ingestion were estimated as from <2% to 22% in 16 species of waterfowl collected in the northeastern United States. The piscivorous red-breasted merganser (Mergus serrator) ingested ...

On March 9, 2006, the U.S. Geological Survey (USGS), Caribbean Water Science Center, in cooperation with the Puerto Rico Electric Power Authority (PREPA), conducted a bathymetric survey of Lago Guerrero to determine the storage capacity of the reservoir and sedimentation amount since a previous survey conducted on May 30, 2001.

The organic sediment within coastal wetlands is composed of carbon sequestered over the time scale of the wetland's existence. This study was conducted to provide information on soil accretion and carbon storage rates across a variety of coastal ecosystems that was utilized in ...

The U.S. Geological Survey (USGS), working closely with academic institutions, state, and other Federal agencies, is spearheading an effort to better understand the geologic and oceanographic controls on the structure and processes of our Nation's coral reef ecosystems. This web site is a gateway to USGS studies of coral reefs.

USGS Suspended-Sediment Concentration Forum. The forum is maintained by the U.S. Geological Survey (USGS) for sharing information regarding the application of surrogates to the measurement of suspended-sediment concentration. The forum is a USGS resource to educate, learn, and facilitate the exchange of information about applications involving ...

(a) 599 samples (533 soils and 66 sediments) were collected across northern California as part of a joint USGS, California Geological Survey project; (b) 33 samples left over from the States 2002 and 2003 datasets (above), collected across Indiana as part of a joint USGS-Indiana Geological Survey project, were analyzed; (c) 170 samples (126 ...