For some reason I could not see posts after about 2/9 until this weekend (computer operator error?) Jimmy, to respond to your question about why lakes turn over (another post that I couldn't see until now). In my earlier post about stratification, I explained that during the summer, the lake is cold at the bottom (4 degrees C), and warm at the top. During a true winter stratification, it is warm at the bottom (4 degrees C), and cold at the top (0 degrees C). This is all due to the maximum density of water being at 4 degrees C (let me know if you're curious why, it's simple, but pretty interesting). Temperate (mid-latitude) lakes typically turn over in the fall and spring. Let's take the fall turnover. As the weather begins to cool, and days become shorter (less radiation), the warm waters at the top (epilimnion) of the stratified lake begin to cool. When it cools down to the same temperature (density) as the hypolimnion, then a little wind will cause the entire lake water to mix (if it's a big wind, the turnover can be pretty dramatic). Fall turnover is often accompanied by the lake changing color when the water from the bottom is brought to the top. My limnology book is at work, so for now well just say that the discoloration is caused by chemical magic that takes place in the hypolimnion during the summer. I have also heard of strong odors associated with rapid fall turnovers. A spring turnover is the same thing in reverse, the water at the top warms until it is 4 degrees C, and a little wind mixes it again. It has to be pretty cold to get true winter stratification, so I doubt that you get it here. So, there may not a be a true spring turnover in most Arkansas lakes (unless they freeze). -- Rick