About Colorado 811:Colorado 811 is a nonprofit organization established in 1986 and located in beautiful Golden, CO. We serve as the communications link and a damage prevention/education resource, connecting underground utility/facility owners, excavators, locators, and the public in the State of Colorado to prevent underground utility damages. I am sure you have heard “Click before you Dig” or have called 811 before digging on your property to have flags put in the ground to identify where your underground utility lines are located. That is what we do! CO811 connects all stakeholders to protect our State’s underground utilities from damage related to excavation and strives to keep everyone our St