An Enhanced Hydrologic Stream Network Based on the NHDPlus Medium Resolution Dataset
Links
- Document: Report (2.09 MB pdf)
- Data Release: USGS data release - E2NHDPlusV2_us: Database of Ancillary Hydrologic Attributes and Modified Routing for NHDPlus Version 2.1 Flowlines
- NGMDB Index Page: National Geologic Map Database Index Page
- Download citation as: RIS | Dublin Core
Abstract
The National Hydrography Dataset Plus, Version 2.1 (NHDPlusV2.1) is an attribute-rich digital stream network for the conterminous United States, serving as a foundational infrastructure for reporting hydrologic information at both regional and national scales. SPAtially Referenced Regressions On Watershed attributes (SPARROW) is a process-based statistical model that relies on a digital hydrologic network like NHDPlusV2.1 to establish spatial relations between quantities of monitored contaminant loads and contaminant sources, accounting for the physical characteristics along flow paths affecting contaminant transport. The U.S. Geological Survey National Water Quality Assessment project adopted and modified the medium-resolution NHDPlusV2.1 network for use as the primary framework supporting SPARROW modeling. This report describes the enhancements made to improve the routing capabilities and the value-added attributes of NHDPlusV2.1 to support modeling and other hydrologic analyses. These enhancements include corrections to inconsistencies in network/routing information, filling in missing attribute values of associated characteristics, accounting of water use affecting flow, new variables useful for interpreting network data, revised flowline attributes such as slope and flow, and incorporation of ancillary spatial data into the network. The resulting dataset containing the enhancements to the network is named E2NHDPlusV2_US. Although the enhancements described in the report were developed for use in SPARROW modeling, the enhancements are expected to be useful for a wide variety of hydrologic studies within the United States.
Suggested Citation
Brakebill, J.W., Schwarz, G.E., and Wieczorek, M.E., 2020, An enhanced hydrologic stream network based on the NHDPlus medium resolution dataset: U.S. Geological Survey Scientific Investigations Report 2019–5127, 49 p., https://doi.org/10.3133/sir20195127.
ISSN: 2328-0328 (online)
Study Area
Table of Contents
- Foreword
- Abstract
- Introduction
- Material and Methods
- Validation
- Summary and Conclusions
- References Cited
- Appendix 1. Description of Addition and Removal Events Spreadsheet
- Appendix 2. Description of Methods Used to Update Streamflow Estimates
- Appendix 3. Description of Methods Used to Update Slope Estimates
- Appendix 4. Description of Attributes in E2NHDPlusV2_us
- Appendix 5. Description of Selected Ancillary Geospatial Dataset Variables Assigned to the Catchments and Flowlines of NHDPlusV2.1
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | An enhanced hydrologic stream network based on the NHDPlus medium resolution dataset |
| Series title | Scientific Investigations Report |
| Series number | 2019-5127 |
| DOI | 10.3133/sir20195127 |
| Year Published | 2020 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | WMA - Earth System Processes Division |
| Description | Report: vii, 49 p.; Data Release |
| Country | United States |
| Other Geospatial | Conterminous United States |
| Online Only (Y/N) | Y |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |