The Nine Major Drainage Areas of BC based on the 1:50,000 scale Canadian National Topographic Series of Maps.

Aquatic Features including Falls, Cascades and springs based on the 1:50,000 scale Canadian National Topographic Series of Maps.

Watershed polygons of Third Order and greater based on the Strahler Stream Order classification method and the 1:50,000 scale Canadian National Topographic Series of maps.

Stream routes. Each stream channel is represented by a single line. Derived from the Stream Centreline Network Spatial layer and based on the 1:50,000 scale Canadian National Topographic Series of Maps.

Stream Centreline Network derived from 1:50,000 scale mapping. Each stream channel is represented by one or more line segments. Based on the 1:50,000 scale Canadian National Topographic Series of Maps.

Watershed polygons representing the Major Watershed Code Numbers of BC. Based on the 1:50,000 scale Canadian National Topographic Series of Maps.

The 246 Watershed Groups of BC based on the 1:50,000 scale Canadian National Topographic Series of Maps.

One of the spatial views of the BC WATERSHED ATLAS 50K, which is the digital basemap representation of the aquatic Man-made waterbodies, Wetlands and Double-line Rivers based on the 1:50,000 scale Canadian National Topographic Series of Maps.

Province-wide spatial view showing the most downstream point of a stream or drainage system, established by Order-in-Council as a Water Reservation. This layer is updated daily.