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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: AK, Administrative watershed units, Administrative watershed units, Alaska, Area of Complex Channels, 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: AK, Administrative watershed units, Administrative watershed units, Alaska, Area of Complex Channels, 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: AK, Administrative watershed units, Administrative watershed units, Alaska, Area of Complex Channels, All tags...
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Multichannel sparker (MCS) seismic-reflection data were collected along the Queen Charlotte-Fairweather Fault between Cross Sound and Dixon Entrance, offshore southeastern Alaska from 2016-05-17 to 2016-06-12. Data were collected aboard the Alaska Department of Fish and Game R/V Medeia, and recorded using a 32 channel GeoEel digital streamer, an Applied Acoustics power supply, and a SIG SLP 790 Sparker Electrode. MCS profiles were collected coincident with multibeam data collected at higher survey speeds (5-6 knots), which reduced the MCS data quality.


map background search result map search result map USGS National Structures Dataset (NSD) Alaska (published 20240215) Shapefile Multichannel sparker seismic-reflection data between Cross Sound and Dixon Entrance, offshore southeastern Alaska, collected from 2016-05-17 to 2016-06-12 during field activity 2016-625-FA USGS National Transportation Dataset (NTD) for Alaska (published 20240215) FileGDB USGS 1:24000-scale Quadrangle for Sitka, AR 1968 USGS 1:250000-scale Quadrangle for Sitka, AK 1951 USGS 1:250000-scale Quadrangle for Sitka, AK 1951 USGS 1:250000-scale Quadrangle for Sitka, AK 1951 USGS 1:250000-scale Quadrangle for Sitka, AK 1951 USGS 1:250000-scale Quadrangle for Sitka, AK 1952 USGS 1:62500-scale Quadrangle for Sitka, KS 1894 USGS 1:24000-scale Quadrangle for Sitka, KY 1992 USGS 1:24000-scale Quadrangle for Sitka, KY 1971 USGS 1:24000-scale Quadrangle for Sitka, KY 1954 USGS 1:24000-scale Quadrangle for Sitka, KY 1971 USGS 1:24000-scale Quadrangle for Sitka, KY 1954 USGS National Structures Dataset (NSD) Alaska (published 20240215) FileGDB USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 1901 (published 20240108) Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 1901 (published 20240108) FileGDB USGS National Structures Dataset (NSD) Alaska (published 20240215) GeoPackage USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 19010212 (published 20231220) GeoPackage USGS 1:24000-scale Quadrangle for Sitka, AR 1968 USGS 1:24000-scale Quadrangle for Sitka, KY 1992 USGS 1:24000-scale Quadrangle for Sitka, KY 1971 USGS 1:24000-scale Quadrangle for Sitka, KY 1954 USGS 1:24000-scale Quadrangle for Sitka, KY 1971 USGS 1:24000-scale Quadrangle for Sitka, KY 1954 USGS 1:62500-scale Quadrangle for Sitka, KS 1894 USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 8 - 19010212 (published 20231220) GeoPackage USGS 1:250000-scale Quadrangle for Sitka, AK 1951 USGS 1:250000-scale Quadrangle for Sitka, AK 1951 USGS 1:250000-scale Quadrangle for Sitka, AK 1951 USGS 1:250000-scale Quadrangle for Sitka, AK 1951 USGS 1:250000-scale Quadrangle for Sitka, AK 1952 Multichannel sparker seismic-reflection data between Cross Sound and Dixon Entrance, offshore southeastern Alaska, collected from 2016-05-17 to 2016-06-12 during field activity 2016-625-FA USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 1901 (published 20240108) Shapefile USGS National Hydrography Dataset Best Resolution (NHD) for Hydrological Unit (HU) 4 - 1901 (published 20240108) FileGDB USGS National Structures Dataset (NSD) Alaska (published 20240215) Shapefile USGS National Transportation Dataset (NTD) for Alaska (published 20240215) FileGDB USGS National Structures Dataset (NSD) Alaska (published 20240215) FileGDB USGS National Structures Dataset (NSD) Alaska (published 20240215) GeoPackage