setting traps on private property

May I legally set muskrat traps on posted private property without permission of the owner if I stay below the ordinary high water mark and set the traps below the ordinary high water mark?
Answer: 
It depends on whether or not the river has been defined as Navigable.  If the river has been defined as Navigable then you are allowed to stay within the high-water marks of the river. If you know its private property you should always get permission first.
Answered on: 
Wednesday, October 21, 2015 - 1:33 PM MDT