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The dataset contains the analytical results for quality-control samples collected during the surface-water sampling for the Triangle Area Water Supply Monitoring Project. The data are sampling-vehicle (ambient) blanks and field blanks collected during October 2013 through September 2015. Several study sites contained in this dataset were sampled for other USGS projects during the same time frame. Unless the quality-control samples at these sites were collected in conjunction with the Triangle Area Water Supply Monitoring Project, the data for other projects are not included in the dataset.
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The dataset contains the environmental data collected for the Triangle Area Water Supply Monitoring Project. The data are from the samples collected during routine and storm-runoff sampling events during October 2013 through September 2015. Several study sites contained in this dataset were sampled for other USGS projects during the same time frame. Unless the samples at these sites were collected in conjunction with the Triangle Area Water Supply Monitoring Project, the data for other projects at these sites are not included in this dataset.
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The dataset contains the analytical results for environmental and quality-control replicate sample sets and the computed relative percent differences (RPD) greater than 25 percent for the data collected during the surface-water sampling for the Triangle Area Water Supply Monitoring Project. The data are from samples collected during October 2015 through September 2017. Several study sites contained in this dataset were sampled for other USGS projects during the same time frame. Unless the samples at these sites were collected in conjunction with the Triangle Area Water Supply Monitoring Project, the data for other projects are not included in the dataset.
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Administrative watershed units, Administrative watershed units, Alamance County, Area of Complex Channels, Area to be submerged, All tags...
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The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" "Standard" (https://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level)...
Tags: 10-digit, 12-digit, 14-digit, 16-digit, 2-digit, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, All tags...
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The dataset contains the analytical results for quality-control samples collected during the surface-water sampling for the Triangle Area Water Supply Monitoring Project. The data are equipment blanks, sampling-vehicle (ambient) blanks, and field blanks collected during October 2015 through September 2017. Several study sites contained in this dataset were sampled for other USGS projects during the same time frame. Unless the quality-control samples at these sites were collected in conjunction with the Triangle Area Water Supply Monitoring Project, the data for other projects are not included in the dataset.
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Abbeville County, Administrative watershed units, Administrative watershed units, Aiken County, Allendale County, All tags...
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These datasets contain information used to compile the report (USGS OFR 2019-xxxx). It contains water-quality data, analytical results of field blanks, and analytical results for environmental and replicate sample sets for surface-water samples collected during water years 2016 and 2017 for the Triangle Area Water Supply Monitoring Program (TAWSMP).
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Abbeville County, Administrative watershed units, Aiken County, Alamance County, Alexander County, All tags...
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The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water...
Tags: Administrative watershed units, Administrative watershed units, Area of Complex Channels, Area to be submerged, Basin, All tags...


map background search result map search result map USGS National Hydrography Dataset (NHD) Best Resolution for North Carolina 20160413 State or Territory FileGDB 10.1 - HUC Watersheds Appendix 1. Water-quality data for surface-water samples collected from October 2013 through September 2015 at the Triangle Area Water Supply Monitoring Project study sites, North Carolina Appendix 2 - Analytical results for blanks collected from October 2013 through September 2015 during surface-water sampling at the Triangle Area Supply Monitoring Project study sites, North Carolina USGS Combined Vector for Cokesbury, North Carolina 20160711 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Goldston, North Carolina 20160711 7.5 x 7.5 minute Shapefile USGS Combined Vector for Merry Oaks, North Carolina 20160711 7.5 x 7.5 minute Shapefile USGS Combined Vector for Bynum, North Carolina 20160712 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Bynum, North Carolina 20160712 7.5 x 7.5 minute Shapefile USGS Combined Vector for Liberty, North Carolina 20160713 7.5 x 7.5 minute Shapefile USGS Combined Vector for Moncure, North Carolina 20160618 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Siler City NE, North Carolina 20160707 7.5 x 7.5 minute FileGDB 10.1 USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20190628) Associated data for the Triangle Area Water Supply Monitoring Project, North Carolina, October 2015 - September 2017 USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03030003 (published 20190708) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03030004 (published 20190710) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 4 - 0306 (published 20190702) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03060204 (published 20190710) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03060202 (published 20190612) Analytical results for blanks collected during surface-water sampling at the Triangle Area Supply Monitoring Project study sites, North Carolina, October 2015 through September 2017 Analytical results for the environmental and replicate sample sets collected from October 2015 through September 2017 at the Triangle Area Water Supply Monitoring Project study sites, North Carolina USGS Combined Vector for Cokesbury, North Carolina 20160711 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Goldston, North Carolina 20160711 7.5 x 7.5 minute Shapefile USGS Combined Vector for Merry Oaks, North Carolina 20160711 7.5 x 7.5 minute Shapefile USGS Combined Vector for Bynum, North Carolina 20160712 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Bynum, North Carolina 20160712 7.5 x 7.5 minute Shapefile USGS Combined Vector for Liberty, North Carolina 20160713 7.5 x 7.5 minute Shapefile USGS Combined Vector for Moncure, North Carolina 20160618 7.5 x 7.5 minute FileGDB 10.1 USGS Combined Vector for Siler City NE, North Carolina 20160707 7.5 x 7.5 minute FileGDB 10.1 Appendix 1. Water-quality data for surface-water samples collected from October 2013 through September 2015 at the Triangle Area Water Supply Monitoring Project study sites, North Carolina Appendix 2 - Analytical results for blanks collected from October 2013 through September 2015 during surface-water sampling at the Triangle Area Supply Monitoring Project study sites, North Carolina Associated data for the Triangle Area Water Supply Monitoring Project, North Carolina, October 2015 - September 2017 Analytical results for blanks collected during surface-water sampling at the Triangle Area Supply Monitoring Project study sites, North Carolina, October 2015 through September 2017 Analytical results for the environmental and replicate sample sets collected from October 2015 through September 2017 at the Triangle Area Water Supply Monitoring Project study sites, North Carolina USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03030004 (published 20190710) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03060202 (published 20190612) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03060204 (published 20190710) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8 - 03030003 (published 20190708) USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 4 - 0306 (published 20190702) USGS National Hydrography Dataset (NHD) Best Resolution for North Carolina 20160413 State or Territory FileGDB 10.1 - HUC Watersheds USGS Watershed Boundary Dataset (WBD) for 2-digit Hydrologic Unit - 03 (published 20190628)