KingBurn11 Published March 12, 2015 at 800 × 600 in Forestry Friday … Protecting a King Sized Salvage Job! Blue marks on these trees and blue flagging deliniate a stream protection zone. Even though there is currently no water in this little draw, equipment is restricted from it. This is to minimize soil disturbance next to a waterway. Share this:TwitterFacebookMoreLinkedInEmailPrintRedditTumblrPinterestPocketTelegramWhatsAppSkypeLike this:Like Loading...