Metadata for Retaining Walls

Identification

File Name
StrRetainingWall
Feature Dataset
Structures
Ownership
District of North Vancouver
355 West Queens Road, North Vancouver, BC, Canada, V7N 4N5

Spatial

Extents
Covers the District of North Vancouver
Coverage
West: 491655.94 m
East: 505241.06 m
South: 5461269.65 m
North: 5467949.41 m
Coordinate System
GCS North American 1983
Projection
NAD 1983 UTM Zone 10N

File Properties

Data Type
Feature Class
Data Format
ESRI Enterprise SDE
Geometry Type
Polyline
Number of Records
412
Topology
False
Spatial Index
True
Linear Referencing
False

History

Date Posted to GIS:
1997
  • 1997: The Triathlon Mapping Company provided the District of North Vancouver with orthoimagery and various features that were identified using photogrammetry. Retaining walls were collected at this time.
  • 1997: However, the retaining walls inventory included many instances of small garden walls and other similar sized structures. Additionally, this inventory included features which were not retaining wall at all.
  • 2007: As part of the District of North Vancouver's asset management program, parts of the Districts asset inventory was refined, augmented and completed. In some cases this involved the collection of more information which was then updated in the GIS.
  • 2009: The existing inventory of retaining walls was carefully examined and insignificant and erroneous structures were thinned out. Temporary staff travelled around the District to observe and record the location and attributes of significant DNV retaining walls. These new records were then added to the existing inventory.
  • 2013: As part of the DNV's continuing asset management program, parts of the District's asset inventory was reviewed and refined, and the GIS was updated accordingly.

Quality

Accuracy
  • There are many thousands of retaining walls in the DNV. Only the significant DNV-owned ones are recorded herein.
  • Spatial information is collected and entered using the next best method applicable to this dataset.
  • Spatial information is very accurate but could be improved using a better collection technique.
  • Where multiple collection/entry methods, the more accurate method is predominant throughout this dataset.
Completeness
  • Significant spatial information is missing.

Maintenance

GIS department contacts Streets department for the latest updates. A Streets department staff representative sits down with GIS staff and reviews and assists with the updates.

Supporting Documentation

Data Dictionary
Not Applicable
Relationships
Not Applicable
Rights
Terms and Conditions of Use