Methods for Computing Water-Quality Loads at Sites in the U.S. Geological Survey National Water Quality Network
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- Document: Report (14.2 MB pdf)
- Data Releases:
- USGS data release - Nutrient and pesticide data collected from the USGS National Water Quality Network and previous networks, 1950-2022
- USGS data release - Nutrient and pesticide data collected from the USGS National Water Quality Network and previous networks, 1950-2021
- Version History: Version History (9.89 kB txt)
- Download citation as: RIS | Dublin Core
Abstract
The U.S. Geological Survey currently (2020) publishes information on concentrations and loads of water-quality constituents at 110 sites across the United States as part of the U.S. Geological Survey National Water Quality Network (NWQN). This report details historical and updated methods for computing water-quality loads at NWQN sites. The primary updates to historical load estimation methods include (1) an adaptation to methods for computing loads to the Gulf of Mexico; (2) the inclusion of loads and trends computed using the Weighted Regressions on Time, Discharge, and Season (WRTDS) and Weighted Regressions on Time, Discharge, and Season with Kalman filtering (WRTDS–K) methods; and (3) the inclusion of loads computed using continuous water-quality data. Loads computed using WRTDS and WRTDS–K and continuous water-quality data are provided along with those computed using historical methods. Various aspects of method updates are evaluated in this report to help users of water-quality loading data determine which estimation methods best suit their particular application.
Suggested Citation
Lee, C.J., Murphy, J.C., Crawford, C.G., and Deacon, J.R, 2017, Methods for computing water-quality loads at sites in the U.S. Geological Survey National Water Quality Network (ver. 1.3, August 2021): U.S. Geological Survey Open-File Report 2017–1120, 20 p., https://doi.org/10.3133/ofr20171120.
ISSN: 2331-1258 (online)
Table of Contents
- Foreword
- Abstract
- Introduction
- The U.S. Geological Survey National Water Quality Network
- National Water Quality Network Load Estimation Methods
- Data Publication
- Summary
- References Cited
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Methods for computing water-quality loads at sites in the U.S. Geological Survey National Water Quality Network |
| Series title | Open-File Report |
| Series number | 2017-1120 |
| DOI | 10.3133/ofr20171120 |
| Edition | Version 1.3: August 2021; Version 1.2: November 2020; Version 1.1: January 2020; Version 1.0: October 2017 |
| Year Published | 2017 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Kansas Water Science Center |
| Description | Report: vii, 20 p.; Version History |
| Online Only (Y/N) | Y |
| Google Analytic Metrics | Metrics page |