Know before you goBefore you head out, check online to find out if the swim area is currently monitored, is under advisory, or has been closed for health or safety reasons. This is especially important after a heavy rain.
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Fast-moving currents, waves and rapids, even in shallow water. Hazards, such as dams, underwater obstacles, or rocks and debris. Vegetation, animals and fish. Drop-offs that can unexpectedly change water depth.
There are some simple ways to evaluate the health of your lake without testing equipment. Water clarity is a great example. Measuring how far down into the water you can see a black and white secchi disk can give you a great index of water clarity. Plants you find in the lake can also give you an indication of health.
If there is scum or algae visible in the water, it won't be clean enough to swim in. There are also natural hazards to outdoor waters compared with pools, especially in the summer. Blue-green algae is a type of bacteria naturally found in lake ecosystems.
“No swimming” signs: This one should go without saying. If there are “no swimming” signs posted near the waterway, don't enter it! Chances are, there are concealed hazards underwater that you may not notice from up above. If you see a sign posted, don't risk it—it's better to find somewhere more desirable to swim.
Lake Drownings are Especially CommonIt is easier to drown in freshwater than in saltwater. Lake waters are dark and murky – it harder to spot someone who is drowning. Ice on lakes can be thinner than expected, causing someone to fall through and drown.
The reality of being 'water-happy' is that your hair will suffer the consequences. If we have to take our pick, fresh water from a river or a lake is the least damaging amongst all water sources. But, just by virtue of being wet, strands are 3 times weaker and more prone to breakage.
A small pond is usually 4 to 20 feet deep, while lakes are typically any depth beyond 20 feet. In most lakes, the deepest spot is known as the “last drop” or “end of the lake.” The water in a small pond or a natural spring will not have any depth to it.