Read the description of the tree in the link. Does it correspond to a water oak description?

Pin Oak here has LOTS of knots. PITA to split to a uniform size, but it is in the Red Oak family, so it has the same firewood burn characteristics - long to season but burns good and puts off heat.

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).