Category Archive : Abouthydrology: usgs r-packages for hydrology
Evaluating long-term changes in river conditions water quality and discharge is an important use of hydrologic data. To carry out such evaluations, the hydrologist needs tools to facilitate several key steps in the process: acquiring the data records from a variety of sources, structuring it in ways that facilitate the analysis, processing the data with routines that extract information about changes that may be happening, and displaying findings with graphical k1 mette k.o.
il wrestling. [archivio]. They are designed to easily accept data from three sources: U. Geological Survey hydrologic data, U. The EGRET package has components oriented towards the description of long-term changes in streamflow statistics high flow, average flow, and low flow as well as changes in water quality.
This report serves as a user guide to these two R packages, providing detailed guidance on installation and use of the software, documentation of the analysis methods used, as well as guidance on some of the kinds of questions and approaches that the software can facilitate. For best results viewing and printing PDF documents, it is recommended that you download the documents to your computer and open them with Adobe Reader.
PDF documents opened from your browser may not display or print as intended. Download the latest version of Adobe Readerfree of charge. More information about viewing, downloading, and printing report files can be found here. Hirsch, R. Geological Survey Techniques and Methods book 4, chap. A10, 93 p. Department of the Interior U.
Using R in hydrology: a review of recent developments and future directions
Abstract Evaluating long-term changes in river conditions water quality and discharge is an important use of hydrologic data. First posted October 8, Revised February 5, From Shaun Harrigan: Thank you Riccardo for your helpful post.
I have recently started a PhD in Hydrology and have chosen R to perform the majority of my statistical analyses and to produce publication quality graphics. I also use it to write code Making good progress but still learning for managing and cleaning up hydrological and climate data data aggregation, missing data, extracting indicators for testing etc. Matlab is also very good, however, the fact that R is free is a big help for students and researchers. Cost aside, R has a rapid growing user group that are continually adding really nice libraries.
I am not aware of any? Be great to here from other hydrologists using R. Just came across this old comment I wrote as a fresh-faced PhD student almost 7 years ago!
I'm happy to say that we have indeed advanced the use and training of R in Hydrology, significantly. I am not aware of any specialised R-for-Hydrologists conferences. I think that Wouter Buytaert and Dominik Reusser, as well as Mauricio Zambrano could be interested in organizing something. I just came across this page - what a great resource, thank you Riccardo! We didn't publicize it enough, and unfortunately it was too small and had to be combined with another environmental modeling session, so it lost its R focus.
Dear colleagues. It is a package for the temporal stochastic simulation of rainfall process at fine time scales based on Bartlett-Lewis rectangular pulses rainfall model.
The second is "eas" which is an evolutionary annealing-simplex algorithm. The first package uses it to estimate the Bartlett-Lewis model's parameters. Dear Hristos, thank you for your information.
However it would be great if you could upload your packages on the CRAN web site. All the best, riccardo. Please feel free to add to your list my blog and github sites on hydrology and stochastic precipitation.Toggle Navigation ReadkonG. Using R in hydrology: a review of recent developments and future directions Page created by Dale Silva.
USGS R Packages
Slater et al. The airGRteaching interface that is used for teaching hydrological modelling. Students can choose a catchment dataset and a hydrological model and activate a snow model on the top left panel of the interface.
Modifying the parameters values on the left by using the sliding bars will automatically update the graphs and scores displayed on the right. This interface highlights in an interactive manner the basic principle of the rainfall—runoff relationship and its description in hydrological models. At the bottom left of the interface, an objective function can be chosen and an automatic calibration procedure can be launched within the interface.
Backus,and C in e. Addi- ; proprietary commercial languages, e. Sanner et al. XRJulia; Chambers, ; Li, For example, rpy2 son et al. The Python p. The RCall package allows strengths or using pre-existing scripts that were originally users to call R from Julia Bates et al. For example, C and Fortran are both efficient in performing loop tasks. This is the reason 2. The airGR hy- resources and courses drological models Coron et al.
One of the major advantages of R is the extensive user R can also be connected to different languages using community, which provides ample support to newcomers a range of packages, e. Connections to Python can be achieved discussion on various R-related topics on social media. Stack Overflow www. Earth Syst. The R Consortium provides support to the com- problems.GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.
If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. This package is a growing set of tools for manipulation of hydrographic data using the NHDPlus data model. There is no specific funding or plan to continue development of this package long term but ongoing support is available due to use of the package in project work.
See the "Get Started" vignette showing the gneral workflow and functionality of nhdplusTools. The following definitions have been used as much as possible throughout the package. Terms for rivers: Flowline: The NHD name for a hydrographic representation of a flowing body of water.
Flowline is generally used when referring to geometry. Flowpath is used when describing aspects of the abstract flowpath featuretype, generally in relation to a flowpath's relationship to a catchment. It is a physiographic unit with zero or one inlets and one outlet. It does not inherently have any conceptual realizations. Rather, a given catchment can be realized in a number of ways; flowpath, divide, and networks of flowpaths and divides are the primary realizations.
Catchment divide: NHD "catchment" polygons are more accurately described as "catchment divide" features. The nhdplusTools package is intended to provide a reusable set of tools to subset and relate data to NHDPlus data.
The package aims to provide a set of tools with minimal dependencies that can be used to build workflows using NHDPlus data. This vision is intended as a guide to contributors -- conveying what kinds of contributions are of interest to the package's long term vision.
It is a reflection of the current thinking and is open to discussion and modification. The following describe a vision for the functionality that should be included in the package in the long run.
The NHDPlus is a very large dataset both spatially and in terms of the number of attributes it contains. Subsetting utilities will provide network location discovery, network navigation, and data export utilities to generate spatial and attribute subsets of the NHDPlus dataset. One of the most important roles of the NHDPlus is as a connecting network for ancillary data and models.
The first step in any workflow that uses the network like this is indexing relevant data to the network. A number of methods for indexing exist, they can be broken into two main categories: linear referencing and catchment indexing. Both operate on features represented by points, lines, and polygons. In other words, a catchment can only be characterized fully through a collection of different conceptual representations. In NHDPlus, the "catchment" feature is the polygon feature that describes the drainage divide around the hydrologic unit that contributes surface flow to a given NHD flowline.GitHub is home to over 50 million developers working together.
Join them to grow your own development teams, manage permissions, and collaborate on projects. R R tools for geo-web processing of gridded data via the Geo Data Portal.
R 52 R 56 Tools for interfacing R with ScienceBase data services. R 17 Stan 14 A system of R scripts and functions for executing and evaluating SPARROW surface water-quality models that generates graphical, map, and tabular output. Hydrologic AnalySis Package.Christa Peters-Lidard Maniac Lecture, November 28, 2018
A pipeline to assemble water temperature data for the 2WP water temperature modeling. A repository for data release scripts and workflows for releasing process-guided meta-transfer learning predictions.
This repository pulls national flow data from NWIS. Tools for the Geological survey R Archive Network. Data sets as data. Big Collaborative Pipelines: using a shared cache, creating task tables, and implementing the split-apply and split-apply-combine paradigms. The toxEval R-package includes a set of functions to analyze, visualize, and organize measured concentration data as it relates to chosen biological effects benchmarks.
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Multimedia Gallery. Park Passes. Technical Announcements. Employees in the News. Emergency Management. Survey Manual. Quantitative assessments of surface waters are needed to address a wide range of water-resource issues facing New England.
Scientists in the Hydrology and Hydraulics section investigate surface-water processes and provide state-of-the-art scientific and engineering analyses to policymakers, planners, and resource managers in New England and beyond. Hydrologic and hydraulic modeling and analyses of USGS streamflow data are frequently used to understand surface-water processes. Streamflow monitoring network data are used for many purposes, including flood prediction, drought monitoring, development of reservoir operation plans, developing predictive equations, and other related planning activities.
Currently, there are 16 designated rivers in New Hampshire in need of daily mean streamflow estimates for managing instream flows. Evaluating the feasibility of record extension techniques to The purpose of this work is to better understand the effects of dam removal on local hydraulics, fish passage, and flooding.
This study is part of a larger effort to monitor ecological resilience changes at nine Hurricane Sandy coastal resiliency aquatic connectivity restoration projects.
It will contribute crucial knowledge that will be used to improve aquatic connectivity system cost Hydrologic droughts and floods can have severe impacts on river infrastructure, water supply, and ecosystem functioning. Knowledge of the magnitude and frequency of floods is needed for the effective and safe design of bridges, culverts, and other structures.
This information is also important for flood-plain planning and management. The flood-frequency characteristics for streamgages and regression equations for estimating flood magnitudes at ungaged sites were last developed in Hodgkins, Science Explorer.
What is Hydrology?
Frequently Asked Questions. Multimedia Gallery. Park Passes. Technical Announcements. Employees in the News.
Emergency Management. Survey Manual. Hydrology is the study of water and hydrologists are scientists who study water.
Read on to learn more. Water is one of our most precious natural resources. Without it, there would be no life on earth. Hydrology has evolved as a science in response to the need to understand the complex water system of the earth and help solve water problems.
Hydrology of the Devils Lake Basin
This hydrology primer gives you information about water on Earth and humans' involvement and use of water. Hear a podcast sound file describing what a hydrologist does. He is wearing special ice cleats on his shoes to have better traction walking on the ice. April Water is one of our most important natural resources. The supply of water available for our use is limited by nature. Although there is plenty of water on earth, it is not always in the right place, at the right time and of the right quality.
Adding to the problem is the increasing evidence that chemical wastes improperly discarded yesterday are showing up in our water supplies today. Hydrology has evolved as a science in response to the need to understand the complex water systems of the Earth and help solve water problems. Hydrologists play a vital role in finding solutions to water problems, and interesting and challenging careers are available to those who choose to study hydrology.
This total has declined about 17 percent since Fresh groundwater withdrawals Much of our water use is hidden.