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Lidar-Derived Ditches in Eastern North Carolina with Transportation attributes, 2014-2015

Metadata Updated: July 6, 2024

Artificial drainage has major ecosystem impacts through the development of extensive ditch networks that reduce storage and induce large-scale vegetation changes. This has been a widespread practice of water table management for agriculture in Eastern North Carolina. However, these features are challenging to identify, and (because of their structure) have been determined by non-natural factors. A dataset of open ditches was processed by calculating terrain openness (also called positive openness): a value based on a line-of-sight approach to measure the surrounding eight zenith angles as viewed above the landscape surface. The result from calculating openness with high resolution digital elevation models (DEMs or Lidar) was then refined by masking natural water ways (stream valleys) and channels that are associated with transportation and urban areas. The resulting raster dataset presented here represents areas without ditches (cell value of 0), a ditch not along a transportation corridor (1), the transportation corridor (100), and ditches along a transportation corridor (101).

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Maintainer
@Id http://datainventory.doi.gov/id/dataset/b167680c163ea9b091eb871be8914869
Identifier USGS:6172b873d34ea36449a88182
Data Last Modified 20220712
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://datainventory.doi.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id bab147c0-ad7d-4e56-8dc1-bf2ba81345c1
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -79.7506,33.8051,-75.4281,36.589
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 1641a98f2f90ef5359a6213d7addbc32dd649f12b5a03e65d971f151abd88cab
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -79.7506, 33.8051, -79.7506, 36.589, -75.4281, 36.589, -75.4281, 33.8051, -79.7506, 33.8051}

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