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River by river, stream by stream, the Irving fisheries
staff must keep a detailed record of the fish habitat in their woodlands.
The staff make these observations by walking through the water, or gliding
over the habitat in a canoe. All streams and rivers within Irving woodlands
are assessed for details on their depth, width, the vegetation growing
there, the bottom surface, and the speed of the water’s movement.
Lakes within Irving forests are similarly surveyed to learn what species
make up their fish populations, and to estimate the numbers of fish.
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