No
person shall operate an off-road vehicle, as defined in Section 304.001,
RSMo., within any stream or river in this City, except that off-road
vehicles may be operated within waterways which flow within the boundaries
of land which an off-road vehicle operator owns, or for agricultural
purposes within the boundaries of land which an off-road vehicle operator
owns or has permission to be upon, or for the purpose of fording such
stream or river of this State at such road crossings as are customary
or part of the highway system. All Law Enforcement Officials or Peace
Officers of this State and its political subdivisions shall enforce
the provisions of this Subsection within the geographic area of their
jurisdiction.