WSA - THIRD-ORDER AND GREATER WATERSHEDS (50,000)

674 views (12 recent)

Published by the Ministry of Environment and Climate Change Strategy - Knowledge Management
Licensed under Open Government Licence - British Columbia

Watershed polygons of Third Order and greater based on the Strahler Stream Order classification method and the 1:50,000 scale Canadian National Topographic Series of maps.

Data and Resources

Dataset Extent

Latitude: 48.0° to 60.0°
Longitude: -139.5° to -113.5°

Additional Information

Purpose

Resource inventory mapping, regional land use mapping

Lineage Statement

Planimetric positional data represents a structuring of digitally scanned federal NTS 1:50, 000 hydrographic mylar separates. DATA SOURCE SIZE : 1 NTS 1:50, 000 Mapsheet GEO COVERAGE: Full coverage of province

Contact Information

NameDon Philip (businessExpert)
EmailDon.Philip@gov.bc.ca
OrganizationMinistry of Environment and Climate Change Strategy
Sub-OrganizationKnowledge Management
NameRobin Munro (pointOfContact)
EmailRobin.Munro@gov.bc.ca
OrganizationMinistry of Environment and Climate Change Strategy
Sub-OrganizationKnowledge Management

Access & Security

Who can view this dataset? Public
Who can download this dataset?Public

Metadata Information

Record Published 2011-03-09
Record Last Modified 2019-12-12
Resource Status completed

Object Description

Object Name: WHSE_FISH.WDIC_WATERSHED_POLY_SVW

Short Name: WSA_WS_SVW
Comments: WDIC_WATERSHED_POLY_SVW is a business view joining base watersheds from the WDIC_WATERBODY_POLY table with the WDIC_WATERSHEDS attribute table.

Column Name Short Name Data Type Data Precision Comments
WATERSHED_POLY_ID WTRSHD__ID NUMBER 7 WATERSHED_POLY_ID is a unique surrogate identifier
WSD_ID WSD_ID VARCHAR2 15 WSD_ID is an artefact from the previous implementation of the Watershed Atlas - this was the PK of the Watershed in the Atlas coverage and it was named WSD_ID (WaterSheD_ID). Some people regularly associated this value with the polygon, so it was retained in this implementation.
WATERSHED_ID WTRSHD_ID NUMBER 12 WATERSHED_ID is the surrogate unique identifier for a WATERSHED.
STREAM_ORDER STRM_RDR NUMBER 3 STREAM_ORDER is the higest stream order, based on 1:50000 scale mapping, in the polygon (after Strahler).
STREAM_MAGNITUDE STRM_MGNTE NUMBER 6 STREAM_MAGNITUDE is the highest stream magnitude, based on 1:50000 scale mapping, in the polygon (see Chapter 2 of Knighton, David. 1984. Fluvial Forms and Processes. London. Edward Arnold.).
NEW_WATERSHED_CODE NEW_WS_CD VARCHAR2 168 NEW_WATERSHED_CODE is the 45-digit code for the watershed in which the waterbody lies.
GAZETTED_NAME GZTTD_NM VARCHAR2 90 GAZETTED_NAME is the official name assigned to the waterbody.
WATERSHED_AREA WTRSHD_RA NUMBER 19 WATERSHED_AREA is the area of the polygon, redundant with respect to the geometry.
WATERSHED_PERIMETER WTRSHD_PRR NUMBER 19 WATERSHED_PERIMETER is the perimeter of the polygon, redundant with respect to the geometry.
FEATURE_AREA_SQM FEAT_AREA NUMBER 19
FEATURE_LENGTH_M FEAT_LEN NUMBER 19
GEOMETRY GEOMETRY SDO_GEOMETRY 64 GEOMETRY is the column used to reference the spatial coordinates defining the feature.
OBJECTID OBJECTID NUMBER 38 OBJECTID is a required attribute of feature classes and object classes in a geodatabase.
SE_ANNO_CAD_DATA BLOB 4000