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Base Mapping and Geomatic Services
Corporate Watershed Base (CWB)
The Corporate Watershed Base (CWB) formerly known as TRIM Watershed
Atlas(TWA) is the creation of a corporate watershed atlas that defines
watershed boundaries by height of land and provides a stream and lake
network for water management and fisheries information.
The CWB Project adds functionality to TRIM 1:20,000 digital topographic
base map data for the entire Province of British Columbia in order to
provide:
- An intelligent, connected feature-coded stream network essential
for GIS analysis and presentation of aquatic information for use in
allocation decisions, planning processes and environmental monitoring;
and
- Associated heights-of-land (HoL) information that will be the standard
source at 1:20,000 for defining cadastral tenure and other administrative
boundaries in the province and for watershed boundary generation and
analysis
Status: A fully connected stream network for the province
(Stage 1) was completed at end of August 2003. Concurrent to this work
a series of new algorithms are being developed to add additional attribution
to the network and to link it to the 1:50K Watershed Atlas. This work
will continue into Fiscal 2004-2005.
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Base
Mapping and
