USGS Data API Access Tokens | USGS Web Retrievals | Site Information | read_waterdata_monitoring_location | read_waterdata_ts_meta | Parameter Information | Daily Data | Unit Data | Groundwater Level Data | Peak Flow Data | Rating Curve Data | Surface-Water Measurement Data | Water Use Data | Statistics Data | Water Quality Portal Web Retrievals | WQP | Sites: whatWQPsites | Data: readWQPdata | Availability: whatWQPdata | Samples: whatWQPsamples | Metrics: whatWQPmetrics | Getting Started in R | New to R? | Citations | Citing the dataRetrieval package | Citing NWIS data | Citing WQP data | Citing Water Quality Portal itself | Disclaimer

USGS Data API Access Tokens | USGS Web Retrievals | Site Information | read_waterdata_monitoring_location | read_waterdata_ts_meta | Parameter Information | Daily Data | Unit Data | Groundwater Level Data | Peak Flow Data | Rating Curve Data | Surface-Water Measurement Data | Water Use Data | Statistics Data | Water Quality Portal Web Retrievals | WQP | Sites: whatWQPsites | Data: readWQPdata | Availability: whatWQPdata | Samples: whatWQPsamples | Metrics: whatWQPmetrics | Getting Started in R | New to R? | Citations | Citing the dataRetrieval package | Citing NWIS data | Citing WQP data | Citing Water Quality Portal itself | Disclaimer

Introduction | EGRET Workflow | EGRET Data Frames and Retrieval Options | Daily | readNWISDaily | readUserDaily | Sample | readNWISSample | readWQPSample | readUserSample | Censored Values: Summation Explanation | INFO | readNWISInfo | readWQPInfo | readUserInfo | Inserting Additional Info | Merge Report: eList | Units | Flow History | Plotting Options | Table Options | Summary of Water Quality Data (without using WRTDS) | Plotting Options | Table Options | Weighted Regressions on Time, Discharge and Season (WRTDS) | WRTDS Results | Plotting Options | Table Options | Extending Plots Past Defaults | Getting Started in R | New to R? | R User: Installing EGRET | Common Function Variables | Flow History Plotting Input | Water Quality Plotting Input | WRTDS Estimation Input | Post-WRTDS Plotting Input | Creating tables in Microsoft™ software from an R data frame | Saving Plots | Disclaimer | Bibliography

Introduction | EGRET Workflow | EGRET Data Frames and Retrieval Options | Daily | readNWISDaily | readUserDaily | Sample | readNWISSample | readWQPSample | readUserSample | Censored Values: Summation Explanation | INFO | readNWISInfo | readWQPInfo | readUserInfo | Inserting Additional Info | Merge Report: eList | Units | Flow History | Plotting Options | Table Options | Summary of Water Quality Data (without using WRTDS) | Plotting Options | Table Options | Weighted Regressions on Time, Discharge and Season (WRTDS) | WRTDS Results | Plotting Options | Table Options | Extending Plots Past Defaults | Getting Started in R | New to R? | R User: Installing EGRET | Common Function Variables | Flow History Plotting Input | Water Quality Plotting Input | WRTDS Estimation Input | Post-WRTDS Plotting Input | Creating tables in Microsoft™ software from an R data frame | Saving Plots | Disclaimer | Bibliography

Introduction | Basin and Range basin-fill aquifers | Get Data | Map It | Composite | Normalized Composite

Introduction

Site Information | Get data using dataRetrieval | Making and Customizing Plots | Default HASP Monthly Frequency Plot | Customize Color Palette | Further Customization of Multiple Plot Aspects

Introduction | Import the data | Call HASP functions | Disclaimer

Site Information | Get data using dataRetrieval | Groundwater Data | Monthly Frequency | Daily 2 year plot | Field Groundwater Level Data | Period of Record - All Data Types | Salinity Data and Analysis | Chloride | Specific Conductance | Specific Conductance vs Chloride

Site Information | Get data using dataRetrieval | Water Level Data and Analysis | Weekly frequency | Daily 2-year | Daily value trends | Field GWL values

Introduction | Required Data Frames | WRTDS Bootstrap Test | Histograms | Confidence Bands | Preliminary Steps | Simple Workflow | Parallel Computing | CI Result Plots

Introduction | Required Data Frames | WRTDS Bootstrap Test | Histograms | Confidence Bands | Preliminary Steps | Simple Workflow | Parallel Computing | CI Result Plots

Introduction | Problem set up | runPairsBoot: The bootstrap uncertainty analysis for runPairs results | The bootstrap uncertainty analysis for runSeries | runGroupsBoot: The bootstrap uncertainty analysis for runGroups results

Introduction | Problem set up | runPairsBoot: The bootstrap uncertainty analysis for runPairs results | The bootstrap uncertainty analysis for runSeries | runGroupsBoot: The bootstrap uncertainty analysis for runGroups results

Introduction | Preparing the data | Data | Chemicals | Sites | Exclude | Benchmarks | Summary

Introduction | Preparing the data | Data | Chemicals | Sites | Exclude | Benchmarks | Summary

Introduction | General Introduction to the EGRET package | Sources of information about 11 EGRET topics | 1. EGRET overview and data entry | 2. Exploration of trends in discharge | 3. Describing water quality without using the WRTDS model. | Improved graphical treatment of censored data. | 4. Making the best possible estimates of concentration or flux for some specific day, month, or year. | 5. Analysis of water quality trends using WRTDS. | 5a. Trends based on Stationary Flow Normalization (SFN). | 5ai. runPairs | 5aii. runGroups | 5aiii. runSeries | 5b. Trends based on Generalized Flow Normalization (GFN) | 5c. Generalized flow normalization with a flow break. | 6. Abrupt change in water quality. | 7. Seasonal analysis of trends | 8. Parallel computing | 9. errorStats to describe the overall accuracy of a WRTDS model | 10. Dealing with problems of model convergence | 11. Alternative discharge variables in the WRTDS model | Enhancements of EGRETci

Introduction | General Introduction to the EGRET package | Sources of information about 11 EGRET topics | 1. EGRET overview and data entry | 2. Exploration of trends in discharge | 3. Describing water quality without using the WRTDS model. | Improved graphical treatment of censored data. | 4. Making the best possible estimates of concentration or flux for some specific day, month, or year. | 5. Analysis of water quality trends using WRTDS. | 5a. Trends based on Stationary Flow Normalization (SFN). | 5ai. runPairs | 5aii. runGroups | 5aiii. runSeries | 5b. Trends based on Generalized Flow Normalization (GFN) | 5c. Generalized flow normalization with a flow break. | 6. Abrupt change in water quality. | 7. Seasonal analysis of trends | 8. Parallel computing | 9. errorStats to describe the overall accuracy of a WRTDS model | 10. Dealing with problems of model convergence | 11. Alternative discharge variables in the WRTDS model | Enhancements of EGRETci

What is ToxCast? | Exposure-Activity Ratio | What is an "endPoint"? | What is a "group"? | Summarizing the data | Reporting bugs | Citing toxEval

What is ToxCast? | Exposure-Activity Ratio | What is an "endPoint"? | What is a "group"? | Summarizing the data | Reporting bugs | Citing toxEval

Streamflow | Custom Units | Data input | Concentration | Flux | Month

Streamflow | Custom Units | Data input | Concentration | Flux | Month

Introduction to SampleSplitting | General Workflow | Getting Started in R

Using the Shiny Application | Check site | Analyze Data:

Introduction | Binary Methods | Ordinal Methods | Imputation Methods

Introduction | Setup | Registering your cores | doParellel | doMC | Simple Benchmarking

Introduction | Setup | Registering your cores | doParellel | doMC | Simple Benchmarking

Introduction | Statistical Concepts | Initial Data Processing | Analysis of Blanks | Analysis of Spikes | Analysis of Replicates | References | Glossary

Introduction | Modeling Nonlinear Log-log Relations | Modeling Flow Mixture Relations | Modeling Seasonal Variation

Introduction | Maximum Likelihood Estimation Method | The Nonparametric Paired-Prentice Wilcoxon Test | The Nonparametric Paired Pratt Test

Introduction | Binary Method | Maximum Likelihood Estimation Method | Nonparametric Methods | Multiple Comparison Tests

Introduction | Binary Method | Maximum Likelihood Estimation Method | Nonparametric Methods

Introduction | Maximum Likelihood Estimation | The Nonparametric Method | Regression on Order Statistics

Introduction | Confidence Intervals for the Mean | Confidence Intervals for Quantiles

Introduction | Binary Method | Maximum Likelihood Estimation Method | Nonparametric Methods

Introduction | Box Plots | Empirical Distribution Function | Probability Plot | The Q-Q and Q-normal Plots | Scatter Plots

Introduction | Logistic regression | Maximum Likelihood Estimation Method

Introduction | Importing Water-Quality Data | Arithmetic Operations | Comparison Operations | Miscellaneous Manipulations | Conversions for Analysis | Mathematical Transformations | Other Applications

Introduction | Summarize the Sample Data | Set up the Project | Seasonal Kendall Trend Test | Regional Trend | Further Remarks

Introduction | Summarize the Sample Data | Set up the Project | Seasonal Kendall Trend Test | Trend Results | Further Remarks

Introduction | Summarize the Sample Data | Set up the Project | Flow Adjustment | Seasonal Kendall Trend Test | Trend Results | Further Remarks

Introduction | Summarize the Sample Data | Set up the Project | Tobit Trend Test | Trend Results | Further Remarks

Introduction | A Simple Graph | Plot Customization | Axis Customization | Adding a plot to a graph | Multiple Graphs | Multiple Graphs with an Explanation | Multiple Graphs with a Shared Axis | Restoring Axis Labels

Introduction | Computing Daily Mean Values | Computing Annual Mean Values | Computing Yearly and Monthly Mean Values

Introduction | Box Plot Types | Example with Explanation | Other variations in the Box argument | Grouped Box Plots | Numeric Grouped Box Plots

Introduction | Hour Formats | Day Formats | Month Formats | Year Formats | Water Year Formats

Introduction | Reference Line with Annotation | Grid Lines | Add a Smoothed Line with Explanation | Add a Regression Line with Confidence Intervals and Table | Show area covered by data

Introduction | Graph with Error Bars | Biplot | Scaleless Graph | Area Graph | Contour Plot | Correlogram | Surface Plot | A Report Graph | A Dendrogram

Introduction | Scatter Plot | Date/Time Plot | Season Plot | Series Plot | Color Plot | Dot Plot | Scaled Plot | Scatter Plot Matrix

Introduction | Piper Plot | Custom Piper Plot | Ternary Diagram | Stiff Diagram

Introduction | Empirical Distribution Function | Probability Plots | The Q-normal Plot | The Q-Q Plot | Histogram | Adding Plots to Probability Graphs