Is it safe to swim in a cold lake?

Keep it safe Particularly if you're a beginning cold water swimmer, have someone with you. The cold water can increase the likelihood of heart problems or cramps that even experienced pool swimmers aren't expecting. If you're not a confident swimmer, it's better to start in warmer and predictably shallow waters.



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According to the National Center for Cold Water Safety, water temperatures below 70 degrees Fahrenheit should be treated with caution. Water temperatures between 50 and 60 degrees Fahrenheit makes it difficult to control your breathing, and anything lower than 40 degrees is painfully cold.

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Hypothermia can happen within minutes of falling into cold water, but the symptoms generally develop gradually. When the water temperature is 40 degrees or below, serious injury can result in as little as a few minutes.

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Stay out of the water if Cloudy water can be a warning that there are more germs in the water than normal. Discolored or smelly water could mean there is a harmful algal bloom (HAB) in the water.

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Ice is not considered safe to walk on until it is at least four inches thick. At that thickness, it is suitable for ice fishing, cross country skiing, and walking, and can support about 200 pounds. At five inches, it should be enough to hold a single snowmobile or ATV or about 800 pounds.

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When is it safe to walk on a frozen lake? As a general rule of thumb, ice is safe to walk on when there is 4 inches or more of clear ice. It is important to understand that different types of ice varying in their strength. Clear blue or black ice is the strongest.

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