Algae can form thick mats or scum, covering large portions of a lake or pond. In addition to disrupting the beauty of lakes, these blooms can produce toxins that are harmful to human and animal health.
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Smelly or Discolored WaterThe smell or appearance of water can also indicate water pollution. Water contaminated with sulfur or certain bacteria will emit the smell of rotten eggs. High iron levels give water an orange color. High manganese levels will cause water to look purple or black.
Lakes can be affected by pollution from various sources such as agricultural runoff, urban development, and recreational activities. High levels of bacteria, harmful algae blooms, and pollutants in the water can pose health risks to swimmers.
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.
The following are some of the most important basic factors that give unique character to each lake ecosystem. Climate: Temperature, wind, precipitation, and solar radiation all critically affect the lake's hydrologic and chemical characteristics, and indirectly affect the composition of the biological community.
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.