![]() Geological Survey (USGS), water is densest at a temperature of 39.2☏ or 4.0☌. When the temperature of water changes, it also changes its density – hence why its weight fluctuates. Now that this is out of the way, it is time to mention water density. The bottom layer is called the hypolimnion.It has a very steep temperature gradient. This layer sits between the epilimnion and the hypolimnion. The middle layer is known as the thermocline.During the warmer months, this layer has a noticeably higher temperature. The upper layer is called the epilimnion.But why does this happen? Simply put, the water in stratified lakes can be split into three layers: But before we get to this part, let’s go into a bit more detail on the topic of ‘Why does a lake flip?’Īs we already mentioned, lakes flip when the weather gets colder. This might sometimes be the case – we will shed some light on these changes and how they could affect the lake’s inhabitants. ![]() But we will talk more about this in a bit.Īnother common topic is that lake turnovers result in changes to the smell and taste of the water. For example, the water in shallow lakes tends to mix more frequently, and it does not undergo the process of stratification. Of course, these turnovers could differ from each other depending on the size of the lake and the change in temperature. ![]() But what does it mean, and why does a lake turn over? This process usually takes place when we leave the warm summer months and the temperatures begin to drop. Whenever we get close to the colder months of the year, every experienced angler starts to mention the term ‘lake turnover’ more and more often. ![]()
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