1. 
   Epilimnion
   Upper waters of a thermally stratified lake subject to wind action.
   Found op http://www.epa.gov/OCEPAterms/
   
   
2. 
   Epilimnion
   The upper region of a lake, subject to wind mixing. Above the thermocline.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   epilimnion
   (from the article `hydrosphere`) Biological processes strongly affect the composition of lake waters and are responsible to a significant degree for the compositional differences ... ...spring and autumn—per year) caused by seasonal differences in temperature and the mixing effects of wind (Fig...
   Found op http://www.britannica.com/eb/a-z/e/36
   
   
4. 
   Epilimnion
   The epilimnion is the top-most layer in a thermally stratified lake, occurring above the deeper hypolimnion. It is warmer and typically has a higher pH and high dissolved oxygen concentration than the hypolimnion. Being exposed at the surface, it typically becomes turbulently mixed as a result of s...
   Found op http://en.wikipedia.org/wiki/Epilimnion
   
   
5. 
   Epilimnion
   The upper region of a thermally stratified lake, above the thermocline, and generally warm and well oxygenated.
   Found op http://www.streamnet.org/glossary.html
   
   

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