Bed and Banks
Justice Roberts in U. S. v. Chicago, M., ST. P. & P. R. CO., 312 U.S. 592 (1941) stated:
"The respondents assert that the power of the Government to take private lands for the improvement of navigation is confined to the natural widths, levels, and flows of the river and that if more is taken compensation must be made. Their position is that the embankment can be injured without compensation only if it constitutes an encroachment and thus a hindrance or obstruction to actual navigation. The Government, on the other hand, insists that its power is not confined to the mere making or clearing of channels and removing hindrances and obstructions to their navigation, but embraces the exercise of every appropriate means for the improvement of navigable capacity and that, in the provision of any such means, it is entitled to deal with and alter the level of the stream to any extent up to ordinary high water mark without being answerable to riparian owners for injury to structures lying below that line.
"Commerce, the regulation of which between the states is committed by the Constitution to Congress, article 1, 8, cl. 3, includes navigation. 'The power to regulate commerce comprehends the control for that purpose, and to the extent necessary, of all the navigable waters of the United States which are accessible from a State other than those in which they lie. For this purpose they are the public property of the nation, and subject to all the requisite legislation by Congress.' And the determination of the necessity for a given improvement of navigable capacity, and the character and extent of it, is for Congress alone. Whether, under local law, the title to the bed of the stream is retained by the State or the title of the riparian owner extends to the thread of the stream, or, as in this case, to low water mark, the rights of the title holder are subordinate to the dominant power of the federal Government in respect of navigation.
"The power of Congress extends not only to keeping clear the channels of interstate navigation by the prohibition or removal of actual obstructions located by the riparian owner, or others, but comprehends as well the power to improve and enlarge their navigability.
"The bed of a river is 'that portion of its soil which is alternately covered and left bare, as there may be an increase or diminution in the supply of water, and which is adequate to contain it at its average and mean stage during the entire year, without reference to the extraordinary freshets of the winter or spring, or the extreme droughts of the summer or autumn.'
"The dominant power of the federal Government, as has been repeatedly held, extends to the entire bed of a stream, which includes the lands below ordinary high water mark. The exercise of the power within these limits is not an invasion of any private property right in such lands for which the United States must make compensation. The damage sustained results not from a taking of the riparian owner's property in the stream bed, but from the lawful exercise of a power to which that property has always been subject."