Canal Locks and Sluice Gates, 100K (USGS Digital Line Graph)

Citation:

Citation Information:

Originator: United States Geological Survey or another mapping agency in cooperation with USGS.
Title: Canal Locks and Sluice Gates, 100K (USGS Digital Line Graph)

Description:

Abstract:
The subject file represents the Arkansas portion of canal lock and sluice gate locations derived from 1:100,000-scale (""intermediate-scale"") Digital Line Graph data created by the USGS. Digital Line Graph (DLG) data are digital representations of cartographic information. DLG's of map features are converted to digital form from maps and related sources. Intermediate-scale DLG data are derived from USGS 1:100,000-scale 30- by 60-minute quadrangle maps. If these maps are not available, Bureau of Land Management planimetric maps at a scale of 1:100,000 are used. Intermediate-scale DLG's are broken down into five categories: 1. Public Land survey, 2. boundaries, 3. transportation 4. hydrography, and 5. hypsography.
Purpose:
DLG's depict information about geographic features on or near the surface of the Earth, terrain, and political and administrative units. These data were collected as part of the National Mapping Program. It is the intention of the Arkansas State Land Information Board to facilitate the dissemination of the 1:100,000-scale Digital Line Graphs.
Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 1/1/1978
Beginning Time: Unknown
Ending Date: 1/1/1986
Ending Time: Unknown

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -94.7793
East Bounding Coordinate: -91.1943
North Bounding Coordinate: 35.8437
South Bounding Coordinate: 33.0582

Keywords:

Place:

Place Keyword Thesaurus: None
Place Keyword: United States
Place Keyword: Arkansas

Use Constraints: None. Acknowledgement of the U.S. Geological Survey and the Arkansas State Land Information Board would be appreciated in products derived from these data.
Point of Contact:

Contact Information:

Contact Organization Primary:

Contact Organization:
Earth Science Information Center, U.S.Geological Survey 507 National Center
Reston, VA USA
20192

Lineage:

Source Information:

Source Citation:

Citation Information:

Originator: United States Geological Survey or another mapping agency in cooperation with USGS.
Title: Canal Locks and Sluice Gates, 100K (USGS Digital Line Graph)

Source Scale Denominator: 100000
Source Time Period of Content:

Time Period Information:

Single Date/Time:

Time of Day: Unknown

Cloud Cover: 0

Direct Spatial Reference Method: Vector

Horizontal Coordinate System Definition:

Geographic:

Latitude Resolution: 0.000458
Longitude Resolution: 0.000458
Geographic Coordinate Units: Decimal Degrees

Geodetic Model:

Horizontal Datum Name: North American Datum of 1983
Ellipsoid Name: Geodetic Reference System 80
Semi-major Axis: 6378137
Denominator of Flattening Ratio: 298.257222

Metadata Date:
Metadata Review Date:
Metadata Future Review Date:
Metadata Contact:

Contact Information:

Contact Organization Primary:

Contact Organization:
Earth Science Information Center, U.S.Geological Survey 507 National Center
Reston, VA USA
20192