EAUBC Ecological Drainage Units

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Published by the Ministry of Environment and Climate Change Strategy - Knowledge Management
Licensed under Access Only

Ecological Drainage Units (EDU's) are nested within Freshwater Ecoregions and take into account zoogeographic, climatic, and physiographic patterns that define freshwater systems. Ecological Drainage Units represent distinct major drainage basins that contain unique assemblages of native B.C. freshwater fish. Thirty-six Ecological Drainage Units are identified in BC.

Data and Resources

Dataset Extent

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

Additional Information

Purpose

EAU BC is a hierarchical classification of BC?s freshwater ecosystems. It is a spatially explicit classification designed to aid in the management and conservation of BC?s freshwater ecosystems and their associated biodiversity.

Specifically, EAU BC was developed with the following applications in mind:

  • Provide an environmental characterization of freshwater ecosystem types in BC that will aid in their specific conservation and management;

  • Provide a spatially explicit data management system for freshwater ecosystems in BC;

  • Enable regional comparisons of freshwater ecosystems;

  • Help inform species / habitat relationships; and

  • Provide a stratification framework for freshwater inventory / monitoring programs and state of the environment reporting on freshwater ecosystems in BC.

Contact Information

NameCraig Mount (businessExpert)
EmailCraig.Mount@gov.bc.ca
OrganizationMinistry of Environment and Climate Change Strategy
Sub-OrganizationKnowledge Management
NameDave McEwan (pointOfContact)
EmailDave.McEwan@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 2014-12-11
Record Last Modified 2019-09-05
Resource Status completed

Object Description

Object Name: WHSE_LAND_AND_NATURAL_RESOURCE.EAUBC_ECO_DRAINAGE_UNITS_SP

Short Name: EABC_EC_DR
Comments: Ecological Drainage Units are nested within Freshwater Ecoregions and take into account zoogeographic, climatic, and physiographic patterns that define freshwater systems. Ecological Drainage Units incorporate the known distribution of native freshwater fishes in BC. Thirty-six Ecological Drainage Units are identified in BC.

Column Name Short Name Data Type Data Precision Comments
ECO_DRAINAGE_UNIT_ID EDU_ID NUMBER 5 ECO DRAINAGE UNIT ID is a system generated unique identifier - Primary key.
FRESHWATER_ECOREGION FW_ECOREG VARCHAR2 40 Freshwater Ecoregions are defined based on zoogeographic patterns in fish recolonization following the last glacial recession. Five Freshwater Ecoregions are identified in BC.
ECO_DRAINAGE_UNIT EDU VARCHAR2 40 Ecological Drainage Units are nested within Freshwater Ecoregions and take into account zoogeographic, climatic, and physiographic patterns that define freshwater systems. Ecological Drainage Units incorporate the known distribution of native freshwater fishes in BC. Thirty-six Ecological Drainage Units are identified in BC.
FEATURE_CODE F_CODE VARCHAR2 10 FEATURE CODE is a standard alphanumeric code to identify the type of feature represented by the spatial data.
FEATURE_AREA_SQM FEAT_AREA 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
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.