Ministry of Environment

Fisheries InventoryFisheries Inventory

Watershed Dictionary data definitions

Watershed Code — A series of groups of digits separated by dashes that uniquely identifies watersheds (a stream and the surrounding land that drains into the stream) in British Columbia. Each group of digits represents an unique watershed and shows the hierarchy from the ocean to the identified watershed. A watershed has a single mainstem, so the watershed code uniquely identifies streams, as well as the watershed.

Waterbody Identifier — There can be one or more lakes and wetlands in a watershed as well as a stream. The lakes and wetlands have the same watershed code as the stream. The waterbody identifier is used to uniquely identify lakes and wetlands in British Columbia.

Type — The type of waterbody: S — stream, L — lake and W — wetland. C is used for coastline. Coastline is not a real waterbody, but the watershed codes generated for the coastline are useful for rollups of all the lakes and streams on a particular island or the east coast of Vancouver Island.

Gazetted Name — The legally registered name of the waterbody or island as obtained from Geographic Data BC.

Alias — One of the, possibly many, locally used names for a waterbody.

TRIM Map — 1:20,000 map sheets.

UTM Zone, Easting, Northing — Universal Transverse Mercader NAD 83 co-ordinates for the mouth of the stream or the outlet of the lake as determined from the 1:50,000 Watershed Atlas digital map.

WSA Area — Lake surface area, in hectares, as measured from the 1:50,000 Watershed Atlas digital map.

WSA Perimeter — Lake perimeter in kilometres, as measured from the 1:50,000 Watershed Atlas digital map.

Elevation — Lake elevation in metres, estimated from 1:50,000 paper maps.

Length — The stream length in kilometres, excluding lakes, as measured from the 1:50,000 Watershed Atlas digital map.

RAB Code — Progenitor of the current 45-digit watershed code created by the Resource Analysis Branch.