Water Resources of the United States

• qw04.03.html Revision of NFM Chapter 6, Section 6.7 - Turbidity
• qw04.02.html The Graphical Constituent Loading Analysis System (GCLAS) for computing discharges of suspended sediment and other water-quality constituents
• qw04.01.html Revised Policy for the Approval of U.S. Geological Survey (USGS) Water-Quality Analytical Methods
• qw03.07.html Nitrogen Isotope Analyses-- Changes in Laboratory Capabilities and Field Procedures
• qw03.06.html Hydrologic Benchmark Network, Fiscal Year (FY)
• qw03.04.html National Stream Quality Accounting Network, Fiscal Year (FY) 2003
• qw03.03.html Changes in Parameter Names Used in the NWIS Parameter Code Dictionary
• qw03.02.html DATA--Guidance for the Use of the Program HYDRA to Estimate or Modify Edited Unit Values from ADAPS
• qw03.01.html Use of parameter-method code pairs in the National Water Information System (NWIS) and the process for requesting parameter codes and method codes
• qw02.15.html Use of the new data-quality-indicator (DQI) field in NWIS 4_1
• qw02.14.html Availability of Universal Blank Water for Inorganic and Organic Analyses
• qw02.13.html Water-Quality Field Methods/National Field Manual for the Collection of Water-Quality Data
• qw02.12.html Availability of S-ESTREND, a S-PLUSŪ based version of ESTREND
• qw02.11.html Policy for Storing and Reporting Significant Figures for Chemical Data
• qw02.10.html Availability of Guidance for Identifying and Correcting Small-Magnitude, Negative Values in the NWIS Water-Quality Databases
• qw02.09.html Water-Quality Field Methods?phaseout of US D-77 and frame-type samplers
• qw02.08.html National Park Service (NPS)/U.S. Geological Survey (USGS) Water-Quality Monitoring and Assessment (WQMA) Partnership for fiscal year (FY) 2003
• qw02.07.html Subject: National Stream Quality Accounting Network, Fiscal Year (FY) 2002
• qw02.06.html Data Bases--Electronic transmission of analytical laboratory data for entry into QWDATA Release 4_1
• qw02.05.html Approval of Laboratories with existing National Environmental Laboratory Accreditation Conference (NELAC) accreditation
• qw02.04.html National Water Quality System (NWIS) Water-Quality Software?Errors in Small Magnitude, Negative Values
• qw02.03.html National Water Quality System (NWIS) QWDATA Rounding Code/update to fix errors
• qw02.02.html USGS Capabilities and Plans Related to Water System Security
• qw02.01.html Change in mTEC agar used for Escherichia coli determination
• qw01.07.html USGS National Water Quality Laboratory Work With Others Policy
• qw01.06.html Replacement of National Water Quality Laboratory Schedule 172, Determination of Trace Elements in Blank Water, with Schedule 1673
• qw01.05.html Preferred Parameter Codes for Indicator Bacteria Methods
• qw01.04.html National Park Service (NPS)/U.S. Geological Survey (USGS) Water-Quality Monitoring and Assessment (WQMA) Partnership for fiscal year (FY) 2001
• qw01.03.html Collection and Use of Total Suspended Solids Data
• qw01.02.html Guidance for Verifying and Interpreting Field Blank Determinations that Indicate High Pesticide or Trace Element Concentrations or that Show Large Numbers of Detections
• qw01.01.revised.html National Stream Quality Accounting Network, Fiscal Year (FY) 2001
• qw00.10.html Discrete Water-Quality Data in NWISWeb
• qw00.09.html Mandatory Use of New Analytical Services Request (ASR) Form for Submitting Samples to the National Water Quality Laboratory
• qw00.08.html New Method for Particulate Carbon and Particulate Nitrogen
• qw00.07.html Particulate Organic Carbon Supplement
• qw00.06Revised.html Approval of Conditional Data from the National Water Quality Laboratory Lab Code 9090 -- Low-Level Volatile Organic Chemicals
• qw00.06.html Approval of Conditional Data from the National Water Quality Laboratory Lab Code 9090 -- Low-Level Volatile Organic Chemicals
• qw00.05.html Particulate Organic Carbon
• qw00.04.html National Park Service Level 1 Water-Quality Inventory and Monitoring Program
• qw00.03.html National Park Service (NPS)/Water Resources Division (WRD) Water-Quality Monitoring and Assessment (WQMA) Partnership for fiscal year (FY) 2001
• qw00.02.html Policy for the Reimbursement of Costs for Quality Assurance of Water-Quality Analytical Laboratories
• qw00.01.html National Stream Quality Accounting Network, Fiscal Year (FY) 2000

• qw99.04.html Changes in Field Treatment Protocols and Bottle Types for Whole-Water Samples Collected for Total Ammonium plus Organic Nitrogen and Total Phosphorus Determinations
• qw99.03.html National Stream Quality Accounting Network, Fiscal Year (FY) 1999
• qw99.02-sw99.01.html Guidance for Collecting Discharge-Weighted Samples in Surface Water Using an Isokinetic Sampler. For the entire report see sw99.01.pdf
• qw99.01.html Tables of Dissolved Oxygen Saturation Values
• qw98.06.html Change in Nitric Acid Preservative for Trace Element Samples
• qw98.05.html Policy for the Approval of U.S. Geological Survey (USGS) Water-Quality Analytical Methods
• qw98.04.html Guidance for Interpretation of NWQL Schedule 2020 and 2021 VOC Data
• qw98.03.html Policy for the Evaluation and Approval of Production Analytical Laboratories
• qw98.02.html National Stream Quality Accounting Network, Fiscal Year (FY) 1998
• qw98.01.html Hydrologic Benchmark Network, Fiscal Year (FY) 1998
• qw97.08.html NWIS: New Remark Code (V) for Water-Quality Data
• qw97.07.html Protocols for Collection of Water-Quality Data for Ground-Water Studies
• qw97.06.html Comparison of the Suspended-Sediment Splitting Capabilities of the Churn and Cone Splitters
• qw97.05.html TMDL -- Should USGS be doing something?
• qw97.04.html PUBLICATIONS--Use of Parameter Codes in Annual Data Reports
• qw97.03.html Protocols for Cleaning a Teflon Cone Splitter to Produce Contaminant-Free Subsamples for Subsequent Determinations of Trace Elements
• qw97.02.html Mercury Cycling in the Environment Workshop, July 7-9, 1996
• qw96.08.html NATIONAL WATER INFORMATION SYSTEM--Modifications to Parameter Code Request Procedure (OWQ Tech Memo 90.10)
• qw96.07.html PUBLICATIONS: "The Use of Suspended Sediment and Associated Trace Elements in Water Quality Studies" by Arthur J. Horowitz
• qw96.06.html Interpretation of Data on Low-Level Concentrations of Pesticides in Water
• qw96.05.html PROGRAMS AND PLANS--National Stream Quality Accounting Network (NASQAN): Fiscal Year 1996--October 1, 1995 to September 30,1996
• qw96.04.html Overhead Rates in the National Water Quality Laboratory
• qw96.03.html PERSONNEL--Janice R. Ward is new Assistant Chief
• qw96.02.html PROGRAMS AND PLANS--National Hydrologic Benchmark Network: Fiscal Year 1996--October 1, 1995 to September 30, 1996
• qw96.01.html Water-Quality Flood Plan
• qw95.02.html Establishment of U.S. Geological Survey (USGS) laboratory for determination of chlorofluorocarbons (CFCs) in air and water samples
• qw94.16.html New Preservation Techniques for Nutrient Samples
• qw94.15.html Implementation of Joint District Reviews by the Office of Ground Water and the Office of Water Quality
• qw94.14.html Use of National Water-Quality Assessment Program Protocols in District Projects
• qw94.13.html Evaluation of the Churn Splitter for Inclusion in the Division Protocol for the Collection and Processing of Surface-Water Samples for Subsequent Determination of Trace Elements, Nutrients, and Major Ions in Filtered Water
• qw94.12.html Changes in Schedule 172
• qw94.11.html National Water Quality Laboratory Charge for Verification of Old Data
• qw94.10.html Sample Collection, Analytical Methods, and Data Interpretation for Mercury Analyses
• qw94.09.html Revision of New Division Protocol for Collecting and Processing Surface-Water Samples for Low-Level Inorganic Analyses
• qw94.08.html Collection, Handling, and Analysis of Environmental Samples in Support of Regulatory Projects
• qw94.07.html Findings of the Regulatory Program Work Group at the Water Quality Specialist Meeting February 3, 1993, in Albuquerque, New Mexico
• qw94.06.html PROGRAM AND PLANS: New Custom Analysis Schedule (172) for Blanks
• qw94.02.html EQUIPMENT--Discontinuance of field use of mercury liquid-in-glass thermometers
• qw93.13.html PROGRAMS AND PLANS--Sources of Funding for the National Water Quality Laboratory
• qw93.12.html Water Resources Division Nomenclature Conventions for Reporting Concentrations of Ammonium Ions and Ammonia in Natural Waters
• qw93.11.html PROGRAMS AND PLANS: Implementation of the Protocol for Collecting and Processing Surface-Water Samples for Low-Level Inorganic Analyses
• qw93.10.html PROGRAMS AND PLANS--(1) Disposal of petri dishes containing bacteria media, and (2) Aspergillus
• qw93.09.html EQUIPMENT--Sample Splitting Devices
• qw93.07.html PROGRAMS AND PLANS--Role of the U.S. Geological Survey in Programs and Projects Involving Regulation and Resource Management
• qw93.06.html Trace-Element Contamination--Findings of Study on the Cleaning of Sampler Caps, Nozzles, Bottles, and Bags for Trace-Element Work at the Part-Per-Billion Level
• qw93.05.html PROGRAMS AND PLANS--Evaluation of Capsule Filters
• qw93.04.html ANALYTICAL METHODS--Discontinuation of the National Water Quality Laboratory determinations for "total" nitrite, "total" nitrite plus nitrate, "total" ammonia,and "total" orthophosphate (using the four-channel analyzer)
• qw93.03.html PROGRAMS AND PLANS--Dissolved Trace-Element Data
• qw92.13.html Trace Element Contamination: Findings of Studies on the Cleaning of Membrane Filters and Filtration Systems
• qw92.12.html PROGRAMS AND PLANS--Trace Element Concentrations in Deionized Water Processed Through Selected Surface-Water Samplers: Study Results and Implications
• qw92.11.html FIELD TECHNIQUES--Return of Spent Mercury and Dichromate Ampoules to the National Water Quality Laboratory
• qw92.10.html PROGRAMS AND PLANS--Phosphorus Methods and the Quality of Phosphorus Data
• qw92.09.html PROGRAMS AND PLANS--Immunoassay Field Screening Tests for Pesticides
• qw92.08.html PROGRAMS AND PLANS--Nutrient Sample Size Reduction
• qw92.06.html Report of Committee on Sample Shipping Integrity and Cost
• qw92.05.html PROGRAMS AND PLANS--Quality of Existing Dissolved Trace-Element Data
• qw92.04.html PUBLICATIONS--Revised Statement Regarding Dissolved Trace-Element Data Production
• qw92.02.html FIELD TECHNIQUES--Field Preparation of Containers for Aqueous Samples
• qw92.01.html Distilled/Deionized Water for District Operations
• qw91.10.html PROGRAMS AND PLANS--Dissolved Trace Element Data
• qw91.09.html REPORTS--"Filtration of Water-Sediment Samples for the Determination of Organic Compounds" by Mark W. Sandstrom
• qw91.08.html PUBLICATIONS--"A Primer on Sediment-Trace Element Chemistry" (Second Edition),
• qw91.02.html "Methods for Collection and Processing of Surface-Water and Bed-Material Samples for Physical and Chemical Analyses"
• qw91.01.html PUBLICATIONS--"Methods for Collection and Analysis of Aquatic Biological and Microbiological Samples,"
• qw90.08.html REPORTS--"A Laboratory and Field Evaluation of a Portable Immunoassay Test for Triazine Herbicides in Environmental Water Samples"
• qw90.07.html SEDIMENT CHEMISTRY--Contamination from D-77 Samplers Equipped with Solenoid-Actuated Valves
• qw90.01.html FIELD TECHNIQUES--Sample Preservation and Ampoule Disposal
• qw89.04.html SEDIMENT CHEMISTRY--Analytical standards
• qw89.01.html EQUIPMENT--pH Measurement of Low-Conductivity Waters
• qw88.07.html Techniques of Water Resources Investigations (TWRI) Report, Book 5, Chapter A4, "Methods for Collection and Analysis of Aquatic
• qw87.03.html EQUIPMENT--pH Measurement in Low Conductivity Waters
• qw86.04.html PUBLICATIONS--Methods for Determination of Inorganic Substances in Water and Fluvial Sediments, OFR 85-495
• qw86.03.html PUBLICATIONS--Methods for Determination of Inorganic Substances in Water and Fluvial Sediments
• qw85.18.html EQUIPMENT AND SUPPLIES--Sterilization of Microbiological Equipment
• qw85.17.html WATER QUALITY--Compensation for Discharge in Detecting Trends in Water Quality Data
• qw85.10.html WATER QUALITY--Measurement and Use of Diversity Indices for Biological Samples
• qw85.09.html WATER QUALITY--Guidelines on Sampling Ground Water for Determination of Organic Compounds--With Comments on Analytical Protocols
• qw84.18.html Water Quality--Preservation and Shipment of Water Samples for the Determination of Mercury.
• qw84.04.html WATER QUALITY--Technical Information: Briefing Paper on Mercury
• qw84.02.html PUBLICATIONS--Guidelines for Use of Water Quality Monitors
• qw83.13.html PUBLICATIONS--"Quality Assurance Practices for the Chemical and Biological Analyses of Water and Fluvial Sediments," Techniques of
• qw82.06.html PUBLICATIONS--Policy on Publishing Constituents with Both Field and Laboratory Values
• qw82.05.html Provisional Method for Carbonate, Dissolved; Bicarbonate, Dissolved; and Carbonate Alkalinity, Dissolved; Electrometric Tritration,
• qw82.01.html WATER QUALITY--Collecting Water Samples for Stable Isotope Analysis
• qw81.15.html WATER QUALITY--New Tables of Dissolved Oxygen Saturation Values; Amendment of Quality of Water Technical Memorandum No. 81.11
• qw81.11.html WATER QUALITY--New tables of dissolved oxygen saturation values
• qw81.08.html WATER QUALITY--Electrodes for pH measurement in low-conductivity waters
• qw81.03.html Manual Compositing Methods for Urban Storm-Runoff Samples
• qw81.02.html EQUIPMENT AND SUPPLIES: Operation and availability--D-77 Water-Quality Sampler
• qw80.30.html PUBLICATIONS: "Significance of bottom material data in evaluating water quality", by Herman R. Feltz
• qw80.28.html WATER QUALITY--Analytical methods; Biochemical Oxygen Demand, Carbonaceous
• qw80.27.html WATER QUALITY -- New Parameter Codes for pH, Alkalinity, Specific Conductance, and Carbonate/Bicarbonate
• qw80.18.html Equipment and Supplies: Samplers--Problems with installation of plastic nozzles on samplers
• qw80.17.html EQUIPMENT AND SUPPLIES--New sample splitter for water-quality samples
• qw80.11.html SAFETY - WATER QUALITY: Technical Information--Briefing paper on "Water-borne diseases"
• qw80.07.html EQUIPMENT & SUPPLIES--Bedload samplers; Use of Helley-Smith Sampler (Addendum to QW Branch Technical Memorandum No. 79.17)
• qw80.06.html EQUIPMENT AND SUPPLIES--Samplers; color-coded nozzles for sediment samplers
• qw80.03.html EQUIPMENT & SUPPLIES: Samplers--P-61 and P-63 Point-Integrating Sediment Samplers
• qw79.17.html EQUIPMENT & SUPPLIES--Bedload samplers; use of Helley-Smith sampler
• qw79.16.html PROGRAMS AND PLANS--Quality Assurance of Temperature Measurements
• qw79.15.html PROGRAMS AND PLANS--Data Networks; unique number identification for federally funded stations
• qw79.10.html Analytical Methods--Recommended procedures for calibrating dissolved oxygen meters
• qw79.08b.html EQUIPMENT AND SUPPLIES--Modification of the field calibration chamber for the YSI dissolved oxygen meter
• qw79.06.html ORGANIZATION AND MANAGEMENT--Shipping regulations related to air shipment of dry ice
• qw78.13.html WATER QUALITY: "Microbiological Monitoring for Water-Quality Assessment" by Phillip E. Greeson.
• qw78.06.html WATER QUALITY: Field filtering of water samples for chemical analysis
• qw78.03.html EQUIPMENT & SUPPLIES -- Churn Splitters
• qw77.10.html QUALITY OF WATER BRANCH TECHNICAL MEMORANDUM NO. 77.10
• qw77.08.html PUBLICATIONS: Open-File Report, Relationship of Sediment Discharge to Streamflow
• qw77.07.html EQUIPMENT & SUPPLIES: Bedload Samplers--Guidelines for Application of the Helley-Smith Bedload Sampler
• qw77.06.html QUALITY OF WATER BRANCH TECHNICAL MEMORANDUM NO 77.06
• qw77.03.html EQUIPMENT & SUPPLIES: DH-75 Suspended-Sediment Sampler
• qw76.17.html WATER QUALITY--Sampling mixtures of water and suspended sediment in streams
• qw76.04.html EQUIPMENT AND SUPPLIES--Bedload Samplers
• qw76.03.html EQUIPMENT AND SUPPLIES: Water-Quality Field Instrumentation
• qw75.25.html WATER QUALITY--Sampling: Pesticides
• qw75.15.html WATER-QUALITY DATA: Publication of Water Temperatures
• qw75.09.html PROGRAMS AND PLANS--Acceptable methods for collection of water-quality data
• qw74.11.html PROGRAMS AND PLANS--Data Networks, National stream quality accounting network
• qw73.16.html PUBLICATIONS - "Sampling Procedures and Problems in Determining Pesticides in the Hydrologic Environment," by H. R. Feltz.;and J. K. Culbertson
• qw73.07.html EQUIPMENT AND SUPPLIES--Teflon sediment sample splitters and plastic sieves
• qw73.05.html PUBLICATIONS - Supplement to TWRI Book 5, Chapter A3
• qw72.13.html PUBLICATION -- TWRI Book 3, Chapter C3, Computations of fluvial-sediment discharge, by George Porterfield
• qw72.04.html PROGRAMS AND PLANS--Instructions for use of sediment samplers for the collection of samples to be analyzed for organic substances
• qw71.09.html PROGRAMS AND PLANS--Guidelines for sampling and analysis of water-quality constituents associated with solids
• qw71.05.html PROGRAMS AND PLANS - Sampling and analysis of water-quality constituents associated with suspended solids
• qw71.04.html REPORTS -- Book 5 Chapter Al TWRI
• qw70.07.html WATER QUALITY - Quality control of water analyses: Water-quality service units and mobile laboratories
• qw62.47.html WATER QUALITY - Hardness of water
• qw61.40.html PUBLICATIONS - Reference List No. 6
• qw61.39.html RESEARCH - The role of limnology in quality of water research.
• qw61.35.html PUBLICATIONS - Reference List. No. 5
• qw61.33.html RESEARCH: Project Status Reports on Hydrologic Principles and Techniques
• qw61.32.html RESEARCH: Project Status Reports on Hydrologic Principles and Techniques
• qw61.26.html REPORTS AND STATISTICS - Quarterly report on activities in the Quality of Water Branch, July - September 1960.
• qw61.23.html WATER, QUALITY - Policy statement on development, testing, approval, and publication of chemical and instrumental methods of water analysis.
• qw61.19.html PROGRAMS AND PLANS - Revision of Public Water Supply Reports, WSP 1299 and 1300
• qw61.16.html WATER, QUALITY - Cost of water analysis
• qw61.14.html PUBLICATIONS: Reference List no. 4
• qw61.09.html RESEARCH: Project Status Reports on Hydrologic Principles and Techniques
• qw61.01.html PROGRAMS AND PLANS - Research Project: Analytical Methods of Water Chemistry
• qw60.43.html PUBLICATIONS - Reference List No. 2
• qw60.41.html REPORTS AND STATISTICS: Station Operation List - 1959 Water Year
• qw60.39.html PUBLICATIONS - Preparation of bibliographies for publication in the formal series of Survey reports
• qw60.27.html MEETINGS - Proceedings of Seminar on Minor Elements in Water
• qw60.25.html Reports and statistics: Use of station numbers in annual reports
• qw60.22.html PUBLICATIONS - General Branch policy on preparation, review, routing and approval of reports
• qw60.17.html PROGRAMS AND PLANS - Revision of Public Water Supply Report, WSP 1299 and 1300
• qw60.13.html PUBLICATIONS - Water temperature records - thermographs
• qw60.12.html REPORTS AND STATISTICS - Scheduled dates for completion of annual water-supply papers
• qw60.00.html