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Water-resources data for the 2004 water year for Pennsylvania consists of records of discharge and water quality of streams; contents and elevations of lakes and reservoirs; and water levels and water quality of ground-water wells. This report, Volume 1 contains (1) discharge records for 79 continuous-record streamflow-gaging stations, 8 partial-record stations, 19 special study and miscellaneous streamflow sites; (2) elevation and contents records for 13 lakes and reservoirs, and water-quality records for 6 lakes and reservoirs; (3) water-quality records for 38 gaging stations and 12 ungaged streamsites; (4) water-quality records for 82 special-study stations; (5) water-level records for 52 network observation wells; (6) water-quality analyses of ground water from 16 ground-water wells. Site locations are shown in figures throughout the report. Additional water data collected at various sites not involved in the systematic data-collection program are also presented. These data together with the data in Volumes 2 and 3, represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State, local, and Federal agencies in Pennsylvania.
Preface
List of surface-water stations, in downstream order, for which records are published in this volume
List of ground-water wells, by county, for which records are published in this volume
List of discontinued continuous-record surface-water discharge stations
List of discontinued continuous-record surface-water-quality stations
USGS Pennsylvania Water Science Center office locations and addresses
Introduction
Cooperation
Summary of hydrologic conditions
Surface water
Water quality
Ground water
References
Special networks and programs
Explanation of the records
Station identification numbers
Downstream-order system
Latitude-longitude system
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 data records available
Explanation of water-quality records
Collection and examination of data
Water analysis
Records of surface-water quality
Classification of records
Accuracy of the records
Arrangement of records
On-site measurements and sample collection
Water temperature
Sediment
Laboratory measurements
Data presentation
Remark codes
Water quality-control data
Blank samples
Reference samples
Replicate samples
Spike samples
Explanation of ground-water level records
Site identification numbers
Data collection and computation
Data presentation
Water-level tables
Hydrographs
Ground-water-quality data
Data collection and computation
Laboratory measurements
Access to USGS Water Data
Definition of terms
Publications on Techniques of Water-Resources Investigations
Special Notes, Remark Codes, and Selected Constituent Definitions
Station records, surface water
Continuous water-discharge and water-quality station records
Discharge at partial-record stations and miscellaneous sites
Crest-stage partial-record stations
Miscellaneous sites
Analyses of samples collected at special-study sites
Pennsylvania water-quality network
Stream conditions of Chester County biological monitoring network
Acid mine drainage projects in the upper Schuylkill River basin
Synoptic assessment of water quality in the Northkill Creek Basin, Berks County, Pennsylvania
Special Notes, Remark Codes, and Selected Constituent Definitions
Station records, ground water
Water-level
Ground-water data collected at special-study sites
Ground water pesticides network project
Chester County ground-water-quality monitoring program
Index
Send questions or comments about this report to the author, R.R. Durlin (717) 730-6900 ext. 6981.
For more information about USGS activities in Pennsylvania, visit the USGS Pennsylvania Water Science Center home page.
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