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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