| Summary: | <p>This study is concerned with the movement of water and
sediment into and out of three characteristic lake systems
in the Mackenzie Delta. The literature reveals that there
have been few attempts to quantify sediment movement and to
establish rates of evolution of any of the lakes found in
the Mackenzie Delta.</p>
<p>The major research objectives were: 1) to determine a
sediment budget for each of the three lake/channel systems;
2) to determine sedimentation rates in the lakes with
particular attention focused on the lake deltas. Field work
was undertaken to measure the sediment budget within the
study lakes. Established sampling methodologies used by
Water Survey of Canada and a number of relatively new
sampling devices were employed.</p>
<p>Data indicate that there is a positive influx of
sediment to all three lakes from breakup in early June to
the end of August. In all three lakes the greatest depths
of sediment deposited were near the channel entrances on the
lake deltas. There were differences in rates of
sedimentation between lakes which can be explained by the
types of channels which connect the lakes to the main
distributary. South Lake, which is connected to the main
distributary, had a larger sedimentation rate than Skidoo
Lake which is connected by a longer channel. The lowest sedimentation rate occurred in NRC Lake, a small perched,
lake which is not connected directly to the main
distributary.</p>
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