Posted by kevin on November 29, 2006 at 12:17:23:
In Reply to: Re: In Regards to Crappie fishing after fall Turnover posted by Phil Benson on November 28, 2006 at 15:26:51:
Fall turnover refers to the mixing of the water column as the surface water is cooled by the colder fall and winter air. As the surface water cools it sinks and warmer water from below replaces it and so on. The water is very often dirty or discolored as this takes place and oxygen levels may drop as poorly oxygenated air from deep water levels rises. There is often an odor of decay associated with this phenomenon. Once the water temps reach the low thirtys the colder water stays at the top of the water column until it eventually freezes and stratification again takes place. Fishing is very often difficult as this happens because the fish often scatter seeking prefered temperatures and higher dissolved oxygen levels. In rivers and impoundments where there is a lot of current and the water column is routinely mixed this effect on the water column is reduced because stratification is not as pronounced. Turnover is typically a natural lake phenomenon.
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