 The first part describes the rule for the determination of just compensation with respect to any real property lying above the high-water mark of a waterway that is taken by the United States in connection with the improvement of rivers, harbors, canals, or waterways of the United States.It unmistakably provides that, notwithstanding "Rands", when property above the high-water mark is condemned for any of several specified purposes, the landowner is entitled to compensation for the part taken, under the same constitutional rules that are applicable in the non-riparian context.As such, the compensation to be paid to the landowner must reflect the value attributable to the property's proximity to the waterway