One means of preventing the top of a pond from freezing involves running a circulating pump near the bottom to agitate the surface and expose it to air throughout the winter months. This phenomenon is similar to that of the flowing of streams in subzero temperatures and to the running of taps to prevent pipe bursts in winter. All of these cases appear to support the assertion that "flowing water does not freeze," a myth debunked in the case of shaken water in the December 2004 issue of TPT.