33 U.S.C. § 666 : US Code - Section 666: Noting conditions of navigable channels

Search 33 U.S.C. § 666 : US Code - Section 666: Noting conditions of navigable channels

The said commission shall from time to time note the conditions
of the navigable channels of said river systems, by cross-section
surveys or otherwise, in order to ascertain the effect therein of
such hydraulic mining operations as may be permitted by its orders
and such as is caused by erosion, natural or otherwise.