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Water-resources data for the 2004 water year for California consist of records of stage, discharge, and water quality of streams, stage and contents in lakes and reservoirs, and water levels and water quality in wells. Volume 2 contains discharge records for 134 gaging stations, stage and content records for 8 lakes and reservoirs, gage-height records for 8 stations, and water-quality records for 36 streamflow-gaging stations and 4 water-quality partial-record stations. Also included are data for 1 low-flow partial-record station, and 1 miscellaneous-measurement station. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in California.
Preface
Surface-Water and Water-Quality Stations in Downstream Order for which records are Published in this Volume
Discontinued Gaging Stations
Discontinued Lakes and Reservoirs
Discontinued Continuous Water-Quality Stations
Introduction
Cooperation
Downstream Order and Station Number
Numbering System for Wells and Miscellaneous Sites
Special Networks and Programs
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 Precipitation Records
Data Collection and Computation
Data Presentation
Explanation of Water-Quality Records
Collection and Examination of Data
Water Analysis
Surface-Water-Quaity Records
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
Access to USGS Water Data
Definition of Terms
Surface-Water-Discharge and Surface-Water-Quality Records
Remark Codes—Continued
Dissolved Trace-Element Concentrations
Data Precision
Analyses of Samples Collected at Water-Quality Partial-Record Sites
Index
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