by Curse of Mandos » Thursday, 19.12.2002., 20:44
I personally dont think the ring's individual properties provided the bearer with specific powers regarding the Elven rings. I beleive the rings were used for protective purposes, for keeping the areas within a certain radius free from evil and keeping the land immortal within that radius. So the fact that Elrond could flood bruinen was due to the fact that the Nazgul tried to pass an area within the boundaries of Vilya, therefore allowing Elrond (and Gandalf) to temporarily cause a flood. The same way that Galadriel may have been able to flood the silverlode, if the situation required it.
Also dont forget that the ring of air (Vilya) is more likely to cause a flood than the ring of water i.e wind causes waves etc. Nenya (ring of water) could have helped create the mirror of Galadriel (water with evidentally magical qualities).
All speculation

'Many are the strange chances of the world,' said Mithrandir, 'and help oft shall come from the hands of the weak when the wise falter'
Of the rings of power - 'The Silmarillion'