It is caused by water temperatures being different at the surface and in the lower regions of a lake. The process itself normally has no effect on the taste or quality of the water. Turnover: Pond or lake turnover is often a reason why your water smells really bad at different times. What causes this? It occurs at least twice a year in the spring and fall (sometimes more if there are heavy rainstorms) where the upper and lower levels of your water body mix together. 2. It seems if people experience a change in the taste or smell of the water at the tap, they say “well the lake must be turning over.” If the fish stop biting one Saturday, they blame it on lake turnover. Sometimes there is even a distinct smell as decomposing plants, algae and other matter surfaces. Turnover: Pond or lake turnover is often a reason why your water smells really bad at different times. This phenomenon is called lake turnover. Temperature changes typically cause the foul odour around Niven Lake once or twice a year — during spring and fall as the lake water turns over, said Dennis Kefalas, the city’s director of public works and engineering. As the surface water begins to cool in the fall, it eventually equalizes in temperature with the deeper water. Sometimes there is even a distinct smell as decomposing plants, algae and other matter surfaces. Lakes and reservoirs in Ohio usually have two turnover periods, one in the fall and another in the spring. It causes a slight smell in the fall and spring. Cooler weather means your lake or pond will soon turn over. Lake Mendota with its large size and deep water is the last lake in the Chain to turnover. "You're just not going to catch fish in those dead waters." "You have to avoid it like the plague," he says. I posted this in another thread but felt it might be interesting enough to have its own thread. During fall turnover, the clarity of a lake usually decreases because mixing brings up nutrient rich water from the bottom of the lake and causes the lake to look cloudy. When you find an area that fits this description, you should heed Wirth's next bit of advice. 2. The lake won't be stratified enough to have a significant turnover, meaning there won't be much if any difference in the bass' location. It has been reported that an algae bloom in the water source is responsible for the bad taste and smell. In many lakes, the color of the water also changes and becomes cloudy. I grew up on lakes and always knew the basics of "lake turnover." Lake Wisconsin and the Wisconsin River do not have a fall turnover because they have current and a water flow that keeps the water circulating year-round. During the fall, the warm surface water begins to cool. Throughout the year at Georgia's latitudes and elevations, reservoirs go through a fairly predictable annual cycle. This is why, in the spring and fall, the lake can have an unpleasant smell. "Lake turnover" is a term that is often used incorrectly to describe one period of the annual cycle of lake stratification (layering), which affects the water quality of Southeastern reservoirs. Author. Posted Tuesday, November 17, 2009 — General. Lake turnover continues to occur in different areas all over the lake. Look at the river below the dams and you can see this off-colored water. During the summer, the epilimnion, or surface layer, is the warmest. It is heated by the sun. What caused the off smelling / tasting water? Most of the time a lake turnover will happen as the water temp nears 40 degrees. As this organic-rich bottom water is pushed upwards it mixes with oxygen-rich water and very rapid decomposition can occur. Sewage entering the lake intentionally or accidentally, agricultural run-offs from crop-fields, or fertilizers leached into the waters are the different ways in which nutrients are added to a water body due to human activities. As water cools, it becomes more dense, causing it to sink. Coming from the Biologist I thought this might help clear up some of the mis-understanding about fall turnover. We can even track spring turnover with a Secchi disk, by measuring water clarity. One person even believed the lake turned over every night. -- Columbus residents walking in Mill Race Park over the past couple of days encountered an unpleasant smell and a more unpleasant sight -- dead fish floating on … one lake i fish is very secluded with tree lines and high banks everywhere. He also explains the smell at the Dam is because the lake has not turned over. This is true for a number of reasons, not the least of which is that without water, life as we know it would not exist. There will also be a (rotten egg) smell, and you'll start to see a lot of bubbles." lake turnover What’s Wrong with City of Houston Water? Text. However, City Manager Greg McDanel said instances of extreme excesses of algae growth, known as an algae bloom, have been a reoccurring problem for the lake in years past. This normally occurs after a heavy rain and a drop in temperature and decomposing sediment and leaves on the bottom of the lake releasing natural odors that smell like sulfur or rotten eggs. It occurs at least twice a year in the spring and fall (sometimes more if there are heavy rainstorms) where the upper and lower levels of your water body mix together. 3) After turnover, the lake’s water temperature will be constant from top to bottom. When this happens the entire water column will mix or “turnover”. Then, when turnover is complete, the clarity increases dramatically. Good time to grab the shotgun and shoot something. Now it’s down to 22% with 78% coming from wells,” Ray said. Jennifer Elms, P.E. Lake turnover changes with the seasons. : Algae bloom is an easy way to explain to the general public. You can often see and smell it. The fishing will stink almost as bad as the lake. If the lake is located in a region that has a high level of nutrients, the lake will naturally be in the eutrophic state. For instance, Lake Superior drains into Lake Michigan and down the line through Lake Ontario and then, finally, through the St. Lawrence to the Atlantic. Print Top Bottom Previous Next Fishing Sponsor: Voyageur North Canoe Outfitters Community Links. This can use up oxygen to a point where it is stressful or even fatal to fish in confined areas. COLUMBUS, Ind. Causes & Effects of Fall Lake Turnover. Water is quite possibly the most fascinating substance on earth. (Asked by a concerned, anonymous lake dweller, of Greenwood, S.C.) It will smell like rotten eggs from the decay coming to the surface. What you are witnessing is a lake or reservoir turnover. The dead fish at Eastside Park were the result of the bottom lake turning over resulting in a fish kill. Sometimes, especially after lots of cooler weather, cold rain, and constant higher winds a lake can undergo a mini-turnover. These reports are from 2002 and 2004. I wanted to know more so I checked out "A Quick Lesson on Lakes" on the Lakes Environmental Association website. Ever wonder what happens after a winter thaw to the plants, oxygen and of course the fish in the lake? but another one that always has wind on it seemd to have never turned over yet. During fall turnover, the clarity of a lake usually decreases because mixing brings up nutrient rich water from the bottom of the lake and causes the lake to look cloudy. It happens every year. Fall turnover can last several weeks, especially if enhanced by windy weather. Lake turnover is a phenomenon that generally occurs twice a year, spring and fall. 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