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Click and
drag on the graph above to move the
'crosshairs' to show velocity at various
depths.
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The interactive graph to the
left shows that streams flow fastest near the water surface and
slowest near the bottom of the stream. Use your mouse to move
the "crosshairs" and read the velocity at different depths. Record
your results. The velocity data from your prior measurements is
already displayed..
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Recall that we are trying to determine
the average velocity of a stream at a particular spot.
Now use the calculator tool and determine the stream's
average velocity from these 9 velocity values.
Average =
m/sec
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