Thread: Iceout 2011
View Single Post
Old 03-08-2011, 07:17 PM   #13
DickR
Senior Member
 
Join Date: Apr 2008
Location: Moultonborough
Posts: 518
Thanks: 0
Thanked 155 Times in 97 Posts
Default water is heaviest at 39 f

BT, you are right to be suspicious of temps being 39 at 2 ft and only 32 at 10 ft at the same time. That would be unstable, since water is at maximum density at about 39 F (4 C). If water were most dense at 32 F, nature would have to chill the whole lake to 32 to get the top layer to stay at 32 and permit freezing over. Circulators to keep docks ice-free wouldn't work either.
DickR is offline   Reply With Quote