Ecological Reach Identification Table For NHDPlusV2: Version 2.0
Using a combination of tabular and spatial data queries, we identified 133,111 flowlines in the National Hydrography Dataset Plus Version 2 (NHDPlusV2) that were created due to breaks in flowlines resulting from flowline intersection with quadrangle map boundaries. We found instances of this occurring in all 18 processing units of the NHDplusV2 dataset. To aid in managing for this characteristic of the NHDPlus, this EcoReach table (nhdplusv2_ecoreachv2.0.csv) assigns all flowlines into units that are representative of ecological stream reaches. These "ecological stream reaches" may be defined by: stream origins, stream confluences, lake or reservoir inflows or outflows, and/or stream outflows (described in more detail in Wang et al. 2011). In addition, all flowlines within an ecological stream reach must have equivalent 'fcode' values (we focused on Stream/River: Hydrographic Category = Intermittent, Stream/River: Hydrographic Category = Perennial, and Artificial Path) and stream order values, as assigned by the NHDPlus. Using techniques described in this metadata a similar table was developed for the NHDPlusV1 (nhdplusv1_ecoreachv2.0.csv; http://dx.doi.org/doi:10.5066/F7W95768). Following the processing steps described in the metadata, users can create similar EcoReach tables to group non-ecological flowlines that result from flowline intersection with quadrangle boundaries into defined ecological river reaches for other versions of the National Hydrography Datasets (e.g. NHD 1:24,000 in the conterminous United States, versions of the NHD in Hawaii, and Alaska) as well as in future versions of the NHDPlus.
Please use the following citation: Wieferich, D., Wesley M. Daniel, and Dana M. Infante (2014). Ecological Reach Identification Table For NHDPlusV2: Version 2.0. National Fish Habitat Partnership Data System. http://dx.doi.org/doi:10.5066/F7RN35WV
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Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Dana Infante", "@type": "vcard:Contact", "hasEmail": "mailto:kyle.herreman@gmail.com" } |
| description | Using a combination of tabular and spatial data queries, we identified 133,111 flowlines in the National Hydrography Dataset Plus Version 2 (NHDPlusV2) that were created due to breaks in flowlines resulting from flowline intersection with quadrangle map boundaries. We found instances of this occurring in all 18 processing units of the NHDplusV2 dataset. To aid in managing for this characteristic of the NHDPlus, this EcoReach table (nhdplusv2_ecoreachv2.0.csv) assigns all flowlines into units that are representative of ecological stream reaches. These "ecological stream reaches" may be defined by: stream origins, stream confluences, lake or reservoir inflows or outflows, and/or stream outflows (described in more detail in Wang et al. 2011). In addition, all flowlines within an ecological stream reach must have equivalent 'fcode' values (we focused on Stream/River: Hydrographic Category = Intermittent, Stream/River: Hydrographic Category = Perennial, and Artificial Path) and stream order values, as assigned by the NHDPlus. Using techniques described in this metadata a similar table was developed for the NHDPlusV1 (nhdplusv1_ecoreachv2.0.csv; http://dx.doi.org/doi:10.5066/F7W95768). Following the processing steps described in the metadata, users can create similar EcoReach tables to group non-ecological flowlines that result from flowline intersection with quadrangle boundaries into defined ecological river reaches for other versions of the National Hydrography Datasets (e.g. NHD 1:24,000 in the conterminous United States, versions of the NHD in Hawaii, and Alaska) as well as in future versions of the NHDPlus. Please use the following citation: Wieferich, D., Wesley M. Daniel, and Dana M. Infante (2014). Ecological Reach Identification Table For NHDPlusV2: Version 2.0. National Fish Habitat Partnership Data System. http://dx.doi.org/doi:10.5066/F7RN35WV |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/F7RN35WV", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.546a1937e4b04d4b7dbde8ef.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_546a1937e4b04d4b7dbde8ef |
| keyword |
[ "Alabama", "Aquatic habitats", "Arizona", "Arkansas", "California", "Catchment areas", "Colorado", "Connecticut", "Conterminous United States", "Delaware", "District of Columbia", "Environmental conditions", "Florida", "Georgia", "Idaho", "Illinois", "Indiana", "Inland water environments", "Iowa", "Kansas", "Kentucky", "Landscape ecology", "Louisiana", "Lower 48 states", "Maine", "Maryland", "Massachusetts", "Michigan", "Minnesota", "Mississippi", "Missouri", "Montana", "Nebraska", "Nevada", "New Hampshire", "New Jersey", "New Mexico", "New York", "North Carolina", "North Dakota", "Ohio", "Oklahoma", "Oregon", "Pennsylvania", "Rhode Island", "River basins", "Rivers", "South Carolina", "South Dakota", "Streams", "Tennessee", "Texas", "USA", "USGS:546a1937e4b04d4b7dbde8ef", "Utah", "Virginia", "Washington", "West Virginia", "Wisconsin", "Wyoming" ] |
| modified | 2026-08-25T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -124.733577943, 24.9510364539, -66.9540023799, 49.3856201164 |
| theme |
[ "geospatial" ] |
| title | Ecological Reach Identification Table For NHDPlusV2: Version 2.0 |
