Hydrology: 100 Year Peak Flow Isolines (Historical)

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

100 year peak flow isolines in cubic metres per second (m3/s) for 100 square kilometre watersheds and 100 year return period

Data and Resources

Dataset Extent

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

Additional Information


Spatial layer intended to display 100 year peak flow isolines.

Lineage Statement

Isolines 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 2011-10-12
Record Last Modified 2019-12-17
Resource Status completed

Object Description


Short Name: HYD100_PFL
Comments: 100YEAR PEAK FLOW LINE SP represents the Instantaneous hydrometric peak flow isoline (m3 per second) 100 yr period for 100 sq. km.

Column Name Short Name Data Type Data Precision Comments
HYDZ_100YEAR_PEAK_FLOW_LINE_ID HDZ100RPKF NUMBER 10 HYDZ 100YEAR PEAK FLOW LINE 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.
PEAK_FLOW_100YR_IN_M3_PER_SEC PKFLW100RN NUMBER 5 PEAK FLOW 100YR IN M3 PER SEC is the 100 year peak flow isoline in cubic metres per second for 100 sq. kilometers watersheds and 100 year return period.
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_LENGTH_M FEAT_LEN NUMBER 19 FEATURE_LENGTH_M is the system calculated length or perimeter of a geometry in meters