This data shows anthropogenic polyline disturbance features. Features were digitized using high resolution satellite imagery and orthophotos. Features from the National Road Network (NRN) and the National Railway Network (NRWN) were adapted and included. The following data was not included in the dataset: proposed features.
Table 1. A list of attributes, associated domains, and descriptions.
Attribute
Data Type
Domains
Description
REF_ID
Text (20)
Unique feature reference ID
DATABASE
Text (20)
Historic, Most Recent, Retired
Sub-database to which the feature belongs
TYPE_INDUSTRY
Text (50)
Table 2.3.2
Major classification of disturbance feature by industry
TYPE_DISTURBANCE
Text (50)
Table 2.3.2
Sub classification of disturbance feature
WIDTH_M*
Double
Width of feature in meters
WIDTH_CLASS**
Text (5)
HIGH, MED, LOW
Width of feature by classification
SCALE_CAPTURED
Long
Scale at which the feature was digitized
DATA_SOURCE
Text (10)
Imagery, GPS, Other
Data source: digitized from imagery, captured by GPS, or obtained by other means
IMAGE_NAME
Text (100)
Filename of source imagery
IMAGE_DATE
Date
Date that imagery was captured (YYYYMMDD)
IMAGE_RESOLUTION
Double
Resolution of source imagery in meters
IMAGE_SENSOR
Text (35)
Name of sensor that captured source imagery
*WIDTH_M: Linear features must be attributed with a width measurement. The width of the feature can be estimated in meters, rounded to the nearest whole number.
**WIDTH_CLASS: This field employs a classification scheme used by previous contractors. This classification scheme was discussed and agreed upon by Mammoth Mapping and the Project Manager in 2011-2013. The width values are the following.
Table 2. Width classification breakdown.
WIDTH_CLASS
Anticipated Value Range (meters)
LOW
<4
MED
4-8
HIGH
>8
Table 3. A list of disturbance feature types and their descriptions.
TYPE_INDUSTRY
TYPE_DISTURBANCE
DESCRIPTION
Mining
Survey / Cutline
A linear cleared area through undeveloped land, used for line-of-sight surveying; impossible to distinguish whether associated with quartz or placer mining (overlapping or unclear claims information)
Survey / Cutline - Placer
A linear cleared area through undeveloped land, used for line-of-sight surveying; associated with placer mining (identified using claims information and/or other indicators)
Survey / Cutline - Quartz
A linear cleared area through undeveloped land, used for line-of-sight surveying; associated with quartz mining (identified using claims information and/or other indicators)
Trench
A long, narrow excavation dug to expose vein or ore structure
Unknown
Unknown linear mining disturbance
Oil and Gas
Pipeline
Visible pipeline or pipeline Right-of-Way (above- or below-ground)
Seismic Line
Seismic lines
Rural
Driveway
A driveway in a rural area
Fence
A fence in a rural area
Transportation
Access Assumed
A linear feature that is assumed to be an access road, but could also be a trail
Access Road
A road or narrow passage whose primary function is to provide access for resource extraction (i.e. mining, forestry) and may also have served in providing public access to the backcountry.
Arterial Road
A major thoroughfare with medium to large traffic capacity
Local Road
A low-speed thoroughfare, provides access to front of properties, including those with potential public restrictions such as trailer parks, First Nations land, private estate, seasonal residences, gravel pits (NRN definition for Local Street/Local Strata/Local Unknown). Shows signs of regular use.
Right of Way
For Road Rights as attributed in the land parcels ancillary data
Trail
Path or track (typically <1.5 m wide) used for walking, cycling, ORV, or other backcountry activities. (Note: trails used for mining activities are Access Roads.)
Unpaved Road
Dirt or gravel road (typically >1.5 m wide) that does not necessarily access remote resources
Unknown
Right of Way
A right of way with unknown industry type
Survey / Cutline
A linear cleared area through undeveloped land, used for line-of-sight surveying. A cutline may not always be associated with mineral exploration, therefore, Type: Unknown was used to differentiate all cutlines that were outside of mineral exploration.
Unknown
Unclassified, or unable to identify type based on imagery, but suspected to be anthropogenic
Utility
Electric Utility Corridor
Corridor usually running parallel to highway, where transmission lines or other utilities are visible
Unknown
Unknown linear feature assumed to be a utility corridor; ancillary data is unclear.
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