Under State of Idaho Noxious Weed Law (Idaho Code 22-2407), it is the responsibility of all property owners to control noxious weeds on their property.  The Canal Company controls weeds on property owned by the company and in easements.  However, property owners also need to do their part.  In some cases, your property may go to the center line of a ditch or canal, and you may be responsible for some of the weed control.