Life It doesn't matter how big or small the project is, you should call 811 because utilities can be at different depths. Author: Edward Orzech Published: 6:29 PM EDT October 13, 2023 Updated: 6:29 PM EDT October 13, 2023 GREENSBORO, N.C. — Many people are starting new projects before the cool weather kicks in. If those projects involved any type of digging, be sure to call 811. Anytime you'll be digging on your property, you need to know where public utility-owned lines are.