1. 
   Monomictic
   Lakes and reservoirs which are relatively deep, do not freeze over during winter, and undergo a single stratification and mixing cycle during the year (usually in the fall).
   Found op http://www.epa.gov/OCEPAterms/
   
   
2. 
   monomictic
   monomictic A reference to a lake having a single period of free circulation or overturn per year, with consequent disruption of the thermocline; it may be either cold monomictic or warm monomictic.
   Found op http://www.wordinfo.info/words/index/info/view_unit/1309/
   
   

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