The uplift of the Rhenish Massif started in late Tertiary time. The determination of the rates of recent vertical movements helps to interpret the whole, phenomenon. The data obtained by relevellings of high precision will be analysed by two different velocity models based on the concepts of Holdahl: the single-point model and the velocity surface model. Both models yield adjusted heights corresponding to a selected reference time and the velocities. The significance of the model parameters will be increased by introducing free adjustments with generalized inverses.