hydroloom | hy S3 class | Network Representation | Representing Dendritic Network Topology | Representing Non-Dendritic Network Topology | Network Graph Representation | Using the Graph Representation

Navigation Modes | NHDPlus-based network navigation | Flownetwork-based navigation

Introduction | Non-dendritic topology attributes | fromnode and tonode | divergence | return divergence | stream calculator | summary | Divergence case study: dropped vs preserved secondary paths | Bringing it all together

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 | Installation | Sample Data | prcp_data | climdiv_poly | Write Timeseries and Geometry to NetCDF | Read Timeseries and Geometry from NetCDF

Applied Example | Extended Example One | Extended Example Two

Set up a USGS git repo with use_project_usgs() | Set up a targets project with tar_init()

Introduction | Sample data | Three accumulation modes | 1. Dendritic (default) | 2. Fractional (divergence apportioned) | 3. Total upstream (no apportionment) | Accumulating derived quantities | Choosing a mode

Terminology | Introduction | topo_sort | Level Path | Other Derived Network Attributes | Required Base Attributes | A visual introduction to the advanced network attributes | topo_sort and terminal ID | Level Path and outlet ID | Summary

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 | 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

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

Introduction | Load Spatial Data | Geometry Types

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