The dynamic behavior of water in the channels of VPI-5 has been reexamined in order to arrive at a motional model which applies throughout the temperature range from 225 to 348 K. An earlier model is unsuccessful in part of this range. We show that there are at least two sites for the intracrystalline water; one is bound to framework aluminum and undergoes rotational motion about the Al-OH2 bond; the other site is a free site within the VPI-5 channels. The motion in this site is approximately isotropic. The results show an interesting dynamic behavior in the temperature range 261-297 K and are discussed with reference to a six-site motional model, which includes a consideration of internal rotations of the water molecules.