Ill agree with that ,Gene. We have the Supt at our Various Chamber and Rotary meetings. The talk starts with "In the Park" Several members of the crowd (like me )stop them, point out that the ONSR is not a park. They point out that we are correct and continue on using riverways instesd.
http://www.law.cornell.edu/uscode/html/uscode16/usc_sec_16_00000460---m000-.html
The enableing language is here.