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This data has achieved Bronze level on 22 October 2015 which means this data makes a great start at the basics of publishing open data.
1:250,000-scale Hydrologic Units of the United States
Summary
- Type of release
- ongoing release of a series of related datasets
- Data Licence
- Not Applicable
- Content Licence
- Creative Commons CCZero
- Verification
- automatically awarded
- Release Date
- 15 March 2013
- Modified Date
- 17 November 2014
- Update Frequency
- (HERE YOU PICK ONE OF THE FOLLOWING ENTRIES THAT DESCRIBES HOW OFTEN CHANGES OR ADDITIONS ARE MADE TO THE DATA SET. PICK ONE, AND DELETE THE REST) CONTINUALLY DAILY WEEKLY MONTHLY ANNUALLY UNKNOWN AS NEEDED IRREGULAR NONE PLANNED
- Publishers
- U.S. Geological Survey, Department of the Interior
- Identifier
- 1-250000-scale-hydrologic-units-of-the-united-states
- Landing Page
- http://catalog.data.gov/dataset/1-250000-scale-hydrologic-units-of-the-united-states
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Description
The Geographic Information Retrieval and Analysis System (GIRAS) was developed in the mid 70s to put into digital form a number of data layers which were of interest to the USGS. One of these data layers was the Hydrologic Units. The map is based on the Hydrologic Unit Maps published by the U.S. Geological Survey Office of Water Data Coordination, together with the list descriptions and name of region, subregion, accounting units, and cataloging unit. The hydrologic units are encoded with an eight- digit number that indicates the hydrologic region (first two digits), hydrologic subregion (second two digits), accounting unit (third two digits), and cataloging unit (fourth two digits). The data produced by GIRAS was originally collected at a scale of 1:250K. Some areas, notably major cities in the west, were recompiled at a scale of 1:100K. In order to join the data together and use the data in a geographic information system (GIS) the data were processed in the ARC/INFO GUS software package. Within the GIS, the data were edgematched and the neatline boundaries between maps were removed to create a single data set for the conterminous United States. NOTE: A version of this data theme that is more throughly checked (though based on smaller-scale maps) is available here: http://water.usgs.gov/lookup/getspatial?huc2m HUC, GIRAS, Hydrologic Units, 1:250 For the most current data and information relating to hydrologic unit codes (HUCs) please see http://water.usgs.gov/GIS/huc.html. The Watershed Boundary Dataset (WBD) is the most current data available for watershed delineation. See http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/water/watersheds/dataset
General Information
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This data is described at
http://catalog.data.gov/dataset/1-250000-scale-hydrologic-units-of-the-united-states Do you think this data is incorrect? Let us know
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This data is published by
U.S. Geological Survey, Department of the Interior Do you think this data is incorrect? Let us know
Legal Information
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The rights statement is at
http://catalog.data.gov/dataset/1-250000-scale-hydrologic-units-of-the-united-states Do you think this data is incorrect? Let us know
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Outside the US, this data is available under
Creative Commons CCZero Do you think this data is incorrect? Let us know
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There are
yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know
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The content is available under
Creative Commons CCZero Do you think this data is incorrect? Let us know
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This data contains
no data about individuals Do you think this data is incorrect? Let us know
Practical Information
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The data appears in this collection
http://catalog.data.gov/organization/usgs-gov Do you think this data is incorrect? Let us know
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This data changes
at least daily Do you think this data is incorrect? Let us know
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The data is
backed up offsite Do you think this data is incorrect? Let us know
Technical Information
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Releases of this data are listed at
http://catalog.data.gov/api/rest/package/1-250000-scale-hydrologic-units-of-the-united-states Do you think this data is incorrect? Let us know
Social Information
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The documentation about each distribution includes machine-readable data for
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The documentation about each distribution includes machine-readable data for
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The documentation about each distribution includes machine-readable data for
a URL to download the dataset Do you think this data is incorrect? Let us know
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Find out how to contact someone about this data at
http://catalog.data.gov/dataset/1-250000-scale-hydrologic-units-of-the-united-states Do you think this data is incorrect? Let us know
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Find out how to suggest improvements to publication at
http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/1-250000-scale-hydrologic-units-of-the-united-states Do you think this data is incorrect? Let us know