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This site is dedicated to Coding and Statistical Data that is produced and analyzed by scientists at the MD-DE-DC WSC. We use many tools at the USGS including software exclusively developed for, sometimes written by the USGS.
OHS uses a two-parameter recursive digital filter that applies specific conductance mass-balance constraints to estimate the base flow contribution to total streamflow at stream gages where specific variables are measured.
The Point-Source Load Estimation Tool (PSLoadEsT) provides a user-friendly interface for generating reproducible load calculations for point source dischargers while managing common data challenges. This report serves as a detailed user's guide.
Excess fine sediment is a leading cause of ecological degradation within the Chesapeake Bay watershed. To effectively target sediment mitigation measures, it is necessary to identify and quantify the delivery of sediment sources to local waterbodies.
Important things happening related to Coding and Statistical Data:
11 May 2020 Introduction to the dataRetrieval package
The dataRetrieval package was created to simplify the process of loading hydrologic data into the R environment. It is designed to retrieve the major data types of U.S. Geological Survey (USGS) hydrologic data that are available on the Web, as well as data from the Water Quality Portal (WQP), which currently houses water quality data from the Environmental Protection Agency (EPA), U.S. Department of Agriculture (USDA), and USGS. Direct USGS data is obtained from a service called the National Water Information System (NWIS).
Statistics Web Service
Here is a sample of our exclusive USGS-based software:
Some related USGS-based content is featured below. This content is featured as projects, working groups, study areas, and other capability teams as they exist throughout the USGS Water Resources discipline.
Below are publications associated with this project.
We use many tools at the USGS exclusively developed for and/or by the USGS. Below is a small sample of the statistical tools we use here at MD-DE-DC WSC.
StreamStats provides access to spatial analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more. Available information varies from state to state.
The USGS WaterWatch Toolkit provides online tools that allow users to search USGS sites in various ways; create a variety of maps, graphs, charts, animations, and tables; perform a variety of streamflow analyses, and retrieve summary statistics.
USGS Statistics Web Service: Retrieve daily, monthly or annual statistics for sites. Statistics are provided on approved data for time-series sites. Statistics are available for any parameter with approved data.
USGS Instantaneous Values Web Service: Use this service to retrieve recent and historical values for streamflow as well as data for other regular time-series parameters served by the USGS.
Software for generating reproducible load calculations for point source dischargers. Includes features to manage common data challenges such as duplicates, incompatible input tables, and missing nutrient concentration or effluent flow data.
The USGS develops regression equations for estimating streamflow statistics for every state, Puerto Rico, and a number of metropolitan areas in the U.S. These equations have been compiled into the National Streamflow Statistics (NSS) Program for design, planning, management, and regulatory purposes. These estimates are often needed at ungaged sites where no observed flow data are available.
The Stochastic Empirical Loading and Dilution Model (SELDM) is designed to transform complex scientific data into meaningful information about the risk of adverse effects of runoff on receiving waters, the potential need for mitigation measures, and the potential effectiveness of such management measures for reducing these risks.
The Kendall-Theil Robust Line software (KTRLine—version 1.0) is a Visual Basic program that may be used with the Microsoft Windows operating system to calculate parameters for robust, nonparametric estimates of linear-regression coefficients between two continuous variables.
SutraPlot creates 2D and rotatable 3D plots from 2D and 3D SUTRA output data.