Lake Elevation, Current, and
Water Temperatures
Many factors come into play when
fishing the Big Lakes of western Kentucky. Some of
the more common factors are seasons, weather, lake
elevation & current, and lake structure. We've
taken these factors and others and asked Dave Stewart
how these things effect fishing on our lakes.
Lake Elevation
Generally speaking, how does the
elevation of the lakes affect fishing, such as fish
feeding on vegetation during high waters or them moving
to deeper water during winter pool?
The general “rule of thumb” for
rising water levels and falling water levels is that
when the water is rising the fish will move up with the
water (i.e. more shallow and when the water is falling
they will move deeper). This rule applies when the water
levels are fluctuating rapidly (over a short period of
time) such as during a flood or hard draw down. As far
as seasonal water levels for the lakes, the levels
really do not dictate the fish to move shallow or
deeper. Their movements are predicated though out
the year on a number of things, such as spawn, food
sources, oxygen levels, water temperatures, etc.
Water Temperatures
How do water temperatures affect
fishing?
Generally speaking cold water slows
down the metabolism of the fish (they are cold blooded)
and so they are not as active nor do they eat as much.
In very warm water temperatures such as in deep summer
the warmer water holds less oxygen and thus the fish
become sluggish from a lack of oxygen. For more
about this, continue on to Lake Current.
Lake Current
How does lake current generally
affect fishing? What happens when a massive amount of
water is being pulled through the dams? What about the
lack of current?
Current can have a number of affects
on the fishing depending on the flow rate. During
normal rates of flow such as when the dams are
generating electricity, the water on the main lake will
become more oxygenated and thus the fish will get more
active. This is especially true during the
deep summer months when the water temperatures are high
and the oxygen levels are lower.
A high rate of flow such as we get
when the gates are open at the dams will have a tendency
to reposition the fish. The fish will find areas
of current breaks such as eddies formed by points
jutting out into the lake causing current breaks.
In many cases, this will concentrate the fish in these
areas. It should be noted here that fish will always
face into the current and this becomes important to the
angler when presenting lures/baits to the fish. A
very heavy flow of water such as we have seen when all
or most of the gates are open will move a lot of the
fish that are on the main lake into the bays so that
they can escape the heavy current. A lack of current
during the spring, fall and winter does not really
affect the fishing that much. However, during the
heat of the summer, the lack of current can have an
adverse affect on the fishing because of lower oxygen
levels.
Continue to
Weather Patterns >
Fishing 101 Credits:
Written by Dave Stewart,
Bass Buster
Guide Service
Edited by Shawn Dunnaway
Fishing 101 may not be reproduced or reprinted and is
provided exclusively by ExploreKentuckyLake.com
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