Designation may cause an increase in use along the river as new visitors seek it out. However, the wild and scenic river management requirements should ensure that any such increase will not damage resources on private property. If anything, there will be increased oversight after designation, discouraging littering, trespass and vandalism. Private landowners may continue to post their property with “No Trespassing” signs or require users to obtain landowner permission.
Source
Interagency Wild & Scenic Rivers Council