Hydrology: Low Flow Zones

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

Zones of homogeneous low flow characteristics

Data and Resources

Dataset Extent

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

Additional Information


Spatial layer intended to display low flow zones.

Lineage Statement

Low flow zones delineated as part of report titled 'British Columbia Streamflow Inventory - 1998' by H. Coulson & W. Obedkoff.

Contact Information

NameAshfaque Ahmed (pointOfContact)
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 2019-12-17
Resource Status completed

Object Description


Short Name: HYD_LFZ_PY
Comments: LOW FLOW ZONES POLY SP represents the zones of homogeneous low flow characteristics.

Column Name Short Name Data Type Data Precision Comments
LOW_FLOW_ZONES_POLY_ID LWFLWZNSPL NUMBER 10 LOW FLOW ZONES POLY ID is the primary unique numeric identifier for a feature.
FEATURE_CODE FTRCD VARCHAR2 10 FEATURE CODE is a 10 character alpha-numeric code based on the Canadian Council on Surveying and Mapping (CCSM) coding convention.
ZONE_NAME ZONE_NAME VARCHAR2 30 ZONE NAME is the Low flow zone name.
GEOMETRY GEOMETRY SDO_GEOMETRY 1 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 SE_ANNO_CAD_DATA is a binary column used by spatial tools to store annotation, curve features and CAD data when using the SDO_GEOMETRY storage data type.
FEATURE_AREA_SQM AREA_SQM NUMBER 19 FEATURE_AREA_SQM is the system calculated area of a two-dimensional polygon in square meters
FEATURE_LENGTH_M FEAT_LEN NUMBER 19 FEATURE_LENGTH_M is the system calculated length or perimeter of a geometry in meters