Whether you're a homeowner planting trees or a contractor excavating a lot, you must call 811 or your state's One Call office to mark underground utility lines before you dig.
Minnesota
Gopher State One Call
800-252-1166
www.gopherstateonecall.org
North Dakota
One Call
800-795-0555
www.ndonecall.com
South Dakota
One Call
800-781-7474
www.sdonecall.com