Instantaneous fluvial sediment data, in addition to other
instantaneous water-quality and ancillary data collected by the
U.S. Geological Survey (USGS), are available on-line through the
National Water Information System World Wide Web (NWISWeb)
water-quality data base at http://waterdata.usgs.gov/nwis/qwdata. The
NWISWeb water-quality data base was populated and is periodically
refreshed from electronic files maintained by individual USGS
District offices across the United States and Puerto Rico. It
represents the single largest repository of USGS electronic
instantaneous-value suspended-sediment, bedload, and bed-material
data. These Web pages provide a summary of fluvial-sediment data
by State, and by USGS station number retrieved from the
then-under-construction NWISWeb data base on January 13, 2000.
The meta data can be accessed by following the links at the
bottom of this Web page.
More than 2.6-million values of instantaneous-value sediment and
ancillary data were retrieved for 15,415 sites in all 50 States,
Puerto Rico, and other locations, including Canada, the Federated
States of Micronesia, Guam, and Southern Ryukyu Islands, from the
NWISWeb data base on January 13, 2000. The NWISWeb data base is
described, along with the criteria used to retrieve sediment and
ancillary data, and selected characteristics of those data in a
report to be published in the Proceedings of the 7th
Federal Interagency Sedimentation Conference, Reno, Nevada, March
25-29, 2001. A copy of the report is available in pdf format and
will require the use of Adobe Acrobat software to view.
Additional Helpful Information:>
- Appendix A contains a complete list of selected parameter
codes used in the retrieval.
- Appendix B summarizes retrieval results for selected instantaneous
fluvial sediment and ancillary data.
- Appendix C contains some helpful explanations about remark codes
associated with selected sediment and ancillary data parameter
codes.
Maps showing locations of sites in the United States and Puerto Rico
with sediment and ancillary data retrieved from the NWISWeb data
base on January 13, 2000:
- Figure 1 shows a map of sites that have at least 30 paired values of
instantaneous-value suspended-sediment concentration and associated water
discharge.
- Figure 2 shows a map of sites that have
at least 30 values of particle-size distribution of suspended
sediment.
- Figure 3 shows a map of sites that have
at least 1 value of bedload discharge.
- Figure 4 shows a map of sites that have
at least 10 values of bed material
particle-size distributions.
The results of the January 13, 2000, retrieval from
then-under-construction NWISWeb water-quality data base, which are
summarized in these Web pages, do not include all
instantaneous-value sediment and ancillary data collected by the
USGS. Only those data that were present in USGS District Office
NWIS data bases in the spring of 1999 were used to populate the
NWISWeb data base that was the source of the January 13, 2000,
retrieval. There is evidence that a considerable amount of USGS
suspended-sediment concentration data and some bedload-transport
data were not available on the NWISWeb on January 13, 2000. In many cases, these data
can be obtained through USGS District offices for a fraction of
the cost of collecting a comparable amount of sediment and ancillary
data. For more information, we recommend contacting the local
USGS office for Water Resources by following the links available
at http://water.usgs.gov/local_offices.html.
Daily-value suspended-sediment data collected by the USGS from 1930
through September 30, 1994, are available to the public on-line
at http://webserver.cr.usgs.gov/sediment/. 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.
Sediment Data Summary by
State Chose state to view summary pages.
Station data for each state may take minutes to
load.
Suggestions for printing.
Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delaware
District of Columbia
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
New Hampshire
New Jersey
New Mexico
New York
Nevada
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Puerto Rico
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming also including
Canada
Federated States of Micronesia
Guam
Ryukyu Islands, Southern
To Be Determined
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