Freshwater Atlas Obstructions

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Published by the Ministry of Forests, Lands, Natural Resource Operations and Rural Development - GeoBC
Licensed under Open Government Licence - British Columbia

Water obstacles (rapids, falls, etc)

Data and Resources

Dataset Extent

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

Additional Information


This spatially-based information is typically used in allocation decisions, boundary definitions, planning processes and environmental monitoring, by internal and external stakeholders.

Lineage Statement

Automated, mathematical and statistical algorithms were applied against the TRIM I stream network and the TRIM I elevation surface model.

Contact Information

NameGeoBC Inquiries (pointOfContact)
OrganizationMinistry of Forests, Lands, Natural Resource Operations and Rural Development

Access & Security

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

Metadata Information

Record Published 2011-03-09
Record Last Modified 2021-05-08
Resource Status onGoing

Object Description


Comments: Contains water obstacles (rapids, falls, etc). This does not contain multipart geometries. Spatial geometry: point

Column Name Short Name Data Type Data Precision Comments
OBSTRUCTION_ID BSTRCTND NUMBER 18 Unique key representing the point.
WATERSHED_GROUP_ID WTRSHDGRPD NUMBER 18 An automatically generate id that uniquely identifies the watershed group feature.
LINEAR_FEATURE_ID LNRFTRD NUMBER 18 A unique numeric identifier used to link the arc to the database.
GNIS_ID GNIS_ID NUMBER 10 The BCGNIS (BC Geographical Names Information System) feature id.
GNIS_NAME GNIS_NAME VARCHAR2 80 The BCGNIS (BC Geographical Names Information System) name associated with the GNIS feature id (an English name was used where available, otherwise another language was selected).
OBSTRUCTION_TYPE BSTRCTNTP VARCHAR2 20 String representing the type of obstacle (Rapid, Fall, Dam etc.).
BLUE_LINE_KEY BLLNK NUMBER 10 The blue line key of the flow arc that the obstruction lies on.
WATERSHED_KEY WTRSHDK NUMBER 10 The watershed key of the flow arc that the obstruction lies on.
FWA_WATERSHED_CODE FWWTRSHDCD VARCHAR2 143 The watershed code of the flow arc the obstruction lies on.
LOCAL_WATERSHED_CODE LCLWTRSHDC VARCHAR2 143 The local watershed code of the flow arc the point lines on.
WATERSHED_GROUP_CODE WTRSHDGRPC VARCHAR2 4 The watershed group code associated with the polygon.
ROUTE_MEASURE RTMSR NUMBER 38 The distance along the route in meters, measured from the mouth of the route containing the obstruction.
FEATURE_SOURCE FTRSRC VARCHAR2 15 The source of the point; where the feature was obtained or modified. eg. linear stream.
FEATURE_CODE FTRCD VARCHAR2 10 FEATURE CODE contains a value based on the Canadian Council of Surveys and Mapping's (CCSM) system for classification of geographic features.