Water-Quality Assessment of the Potomac River Basin: Water-Quality and Selected Spatial Data, 1992-96

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 1997
Title: Water-Quality Assessment of the Potomac River Basin: Water-Quality and Selected Spatial Data, 1992-96
Edition:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place:
Publisher: U.S. Geological Survey
Other_Citation_Details:
Online_Linkage: http://md.water.usgs.gov/pnawqa/datarpt/pages/intro.htm
Description:
Abstract:
The U.S. Geological Survey (USGS) implemented the National Water-Quality Assessment (NAWQA) Program to describe the status and trends in the quality of the Nation's surface water and ground water and to provide scientific understanding of the natural and human-induced factors that affect water quality. In 1991, twenty study units were started. Additional study units began in 1994 and 1997. Data collection and analysis in each study unit follows national guidelines for the NAWQA Program, but also addresses the issues most important to that study unit. NAWQA is designed to produce a wealth of water-quality information to assist policy makers and managers at the national, state, and local levels in making more informed decisions. In 1991, the Potomac River Basin study unit began planning assessment activities. The basin was subdivided into eight subunits based on physiographic and geologic characteristics, which were determined to be the most influential natural factors affecting water quality. Water-quality sampling began in 1992. The first high-intensity data-collection phase of the study unit spanned from 1993 to 1995; much of the data collection focused on the Great Valley Carbonate, Piedmont, Triassic Lowlands, and Valley and Ridge subunits. Hundreds of water-quality characteristics were measured in different media during this time, including ground water, streamwater, streambed sediments, and aquatic biological tissues. Fish communities and stream habitat also were sampled. In addition, spatial data such as geology, land use, hydrography, and other watershed characteristics were compiled into a geographic information system (GIS) to support the assessment. After 1995 the project entered a period of less frequent sampling called the low-intensity phase. This report presents data collected and compiled during the first high-intensity phase of the Potomac NAWQA study unit. Data are presented from 138 ground-water wells and 125 stream sites. Ground-water measurements compiled in this report include chemical, physical, and water-level data. Streamwater measurements compiled include chemical, physical, streamflow, bed-sediment contaminants, aquatic-tissue contaminants, fish community, and selected stream habitat data. Quality-control chemical data are also presented. Basinwide and site-specific spatial data compiled by the study unit are also distributed with this report. The study design and sampling methods developed for the Potomac NAWQA study unit are consistent with the national NAWQA guidelines (Gilliom and others, 1995). The design permits an integrated assessment of conditions at local, regional, and national scales. For more information refer to the report, "Design and Implementation of a Sampling Strategy for a Water-Quality Assessment of the Potomac River Basin" (Gerhart and Brakebill, 1996). Sampling methods and protocols for the NAWQA Program are documented in a series of guideline documents. Citations for these can be found in the Selected references section of this report.
Purpose:
Not Available
Supplemental_Information:
Not Available
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19920101
Ending_Date: 19961231
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -79.0
East_Bounding_Coordinate: -77.0
North_Bounding_Coordinate: 40.0
South_Bounding_Coordinate: 38.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ACID DEPOSITION
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ALKALINITY
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > BENTHIC INDEX
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CARBON DIOXIDE
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CARCINOGENS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CHLOROPHYLL
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CONDUCTIVITY
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > CONTAMINANTS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > DISSOLVED GASES
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > DISSOLVED SOLIDS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > HYDROCARBONS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > INORGANIC MATTER
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > LIGHT TRANSMISSION
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NITROGEN COMPOUNDS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > NUTRIENTS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > ORGANIC MATTER
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > OXYGEN
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > PH
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > PHOSPHOROUS COMPOUNDS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > RADIOISOTOPES
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > STABLE ISOTOPES
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > SUSPENDED SOLIDS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > TOXIC CHEMICALS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > TRACE METALS
Theme_Keyword: EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY > TURBIDITY
Theme_Keyword: CBP > CHESAPEAKE BAY PROGRAM
Theme_Keyword: Water Quality Sampling
Theme_Keyword: Groundwater
Theme_Keyword: Streamwater
Theme_Keyword: Streambed Sediments
Theme_Keyword: Aquatic Biological Tissue
Theme_Keyword: ENVIRONMENT
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: INLAND WATERS
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > VIRGINIA > POTOMAC RIVER BASIN
Access_Constraints: None
Use_Constraints:
None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: POTOMAC NAWQA CHIEF
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: U.S. Geological Survey
Address: 8987 Yellow Brick Road
City: Baltimore
State_or_Province: Maryland
Postal_Code: 21237
Country: USA
Contact_Voice_Telephone: 410 238-4200
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: DOI/USGS/WRD/NAWQA/POTOMAC > Potomac River, National Water Quality Assessment Program, Water Resources Discipline, U.S. Geological Survey, U.S. Department of the Interior
Contact_Person: POTOMAC NAWQA CHIEF
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: U.S. Geological Survey
Address: 8987 Yellow Brick Road
City: Baltimore
State_or_Province: Maryland
Postal_Code: 21237
Country: USA
Contact_Voice_Telephone: 410 238-4200
Resource_Description: CBP_PNAQWA
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://md.water.usgs.gov/pnawqa/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20030929
Metadata_Review_Date: 20111122
Metadata_Future_Review_Date: 20040929
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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