Water Data Report (WDR)


Water Resources Data - Maryland, Delaware, and Washington, D.C.
Water Year 2005
Volume 1. Surface - Water Data

By Richard W. Saffer, Robert H. Pentz and Anthony J. Tallman




Water resources data for the 2005 water year for Maryland, Delaware, and Washington, D.C. consist of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs. This volume (Volume 1. Surface-Water Data) contains records for water discharge at 145 gaging stations; stage and contents of 1 reservoir; stage only for 2 tidal gaging station; and water quality at 19 gaging stations. Also included are stage only for 11 tidal crest-stage partial-record stations. Additional water data were collected at various sites not involved in the systematic data-collection program and are published as miscellaneous measurements. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State, local, and Federal agencies in Maryland, Delaware, and Washington, D.C.




Report documentation page

List of surface-water stations, in downstream order, by which records are published

List of discontinued surface-water-discharge stations

List of discontinued crest-stage partial-record stations

List of discontinued surface-water-quality stations

List of low-flow, partial-record stations



Summary of hydrologic conditions

Downstream order and station number

Special networks and programs

Numbering system for miscellaneous sites

Explanation of stage- and water-discharge records

Data collection and computation

Data presentation

Station manuscript

Peak discharge greater than base discharge

Data table of daily-mean values

Statistics of monthly-mean data

Summary statistics

Identifying estimated daily discharge

Accuracy of field data and computed results

Other records available

Explanation of water-quality records

Surface-water-quality records

Classification of records

Accuracy of the record

Arrangement of records

On-site measurements and sample collection

Water temperature


Laboratory measurements

Data presentation

Remark codes

Water-quality control data

Blank samples

Reference samples

Replicate samples

Spike samples

Access to USGS data

Definition of terms

Surface water records

Elevation at tidal crest-stage partial-record stations

Analyses of samples collected at water-quality partial-record stations

and miscellaneous sites


This report is available online in Portable Document Format (PDF). If you do not have the Adobe Acrobat PDF Reader, it is available for free download from Adobe Systems Incorporated.


View the full report in PDF (7.4 MB)


Document Accessibility:  Adobe Systems Incorporated has information about PDFs and the visually impaired. This information provides tools to help make PDF files accessible. These tools and the accessible reader may be obtained free from Adobe at Adobe Access.


For more information about USGS activities in Maryland, Delaware and the District of Columbia contact:


MD-DE-DC Water Science Center
U.S. Geological Survey
8987 Yellow Brick Road
Baltimore, MD 21237

Telephone: (410) 238-4200
Fax: (410) 238-4210


or access the USGS Water Resources of Maryland, Delaware, and District of Columbia home page at:

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