you can disturb beaver dams on your land. i would tear a notch in the damn, and set a 330 conibear in front of that notch. put it at the botton edge of the notch so it will remain under water when the level drops. when the level drops you can go upstrean and look for den holes in the bank, set a 330 infront of every hole. look for slide runs on the bank, and set snares there. the day you notch the dam, go back that night and set and wait, and pop them with a shotgun. shooting/trapping beavers is legal until mid april. or, go to your local fur buyer and get the names of some beaver trappers, and turn them loose on 'em