Over the summer months, Cleveland Water staff have been closely watching as the waters of Lake Erie separate into distinct layers – a layer of warm water at the surface and a cold water layer at the bottom of the lake.
Environmental laws and regulations, spurred in large part by the last Cuyahoga River fire in 1969, have dramatically improved the quality of our nation’s waterways. But as these legacy issues are addressed, new environmental challenges have evolved – ones that are much less visible than a burning river.
Several days ago we told you that Lake Erie’s bottom water temperatures had reached below the magic number of 39.2°F, meaning the surface could freeze as long as the air temperature above the lake stayed below freezing.
Since the start of 2019, the temperature of the lake water coming into Cleveland Water’s Garrett Morgan Treatment Plant has stayed below 39.2°F (4°C). This is the magic number that signals the lake’s surface can now start to freeze.
43.6 degrees Fahrenheit is the official temperature for Lake Erie offshore of Cleveland as of today, November 28. While that's still a good bit above freezing, as winter progresses and the lake temperature continues to drop we're on the lookout for ice formation.
Have you ever set a glass of water on your bedside table only to take a drink out of it a few days later and think the water tastes “flat” or different? Chances are the water is missing dissolved oxygen. Dissolved oxygen (also called DO) is gaseous oxygen dissolved in water that you can’t see. Generally speaking, the more dissolved oxygen in the water the better it tastes.