Surface disturbance linear features

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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