Watershed

Description

Watershed coverage extends from the Canada-U.S. border to the Canadian territorial sea boundary or to the National Topographic System (NTS) 1:50 000 tile boundary along Canada’s coasts.
The NHN watersheds were created from the Water Survey of Canada Sub-Sub-Drainage Area (WSCSSDA) and Fundamental

Drainage Areas (FDA) of the Atlas of Canada.

• There are more than 1382 basins covering the entire Canadian landmass.

• Each watershed is a simple polygon without holes.

• The watersheds form a continuous layer.

• The watersheds index is available in Shapefile format (ESRITM) and in kmz format of Google Earth.

Originator

1. Canada Open Data

Use Cases

Source(s)

Remarks

1. The most appropriate dataset to use for EGIS would be SHP file as there is no web service available.

Process for EGIS integration

SHP File:

1. SHP can be integrated directly into ArcMap and ArcGIS.

TC Smart Maps:

1. Not all GIS applications can consume KML file directly due to its unique data structures such as networklinks, folders, models etc.

2. Please contact Lawrence Chong, Digital Services Directorate for TC Smart Maps KML dataset and format translation.

3. TC Smart Maps KML link: \tc.gc.ca\tcgis\GISData\Google Mashup\Watershed\Watershed.kmlz

Customization:

1. Schema transformation: As required

2. Denormalization: Not required

3. Value coding: Not required

4. Attribute renaming: As required to improve readability

5. Attribute removal: It is highly recommended as some fields are unnecessary, this will also reduce file size and improve performance

6. Geoenrichment: Feature symbolization is recommended to improve visualization

7. Format translation: Not required

8. Language translation: French version available for most dataset

9. Update frequency: As identified