What do these utility markings mean exactly?

[Kimballkid]

Here’s the South Dakota One-Call page that explains the program and also has a handy-dandy chart that shows the different colors of markings and their meanings.

[carnivorousplant]

@TroutMan

Utility markers use paint almost exclusively. It has to last for a few weeks through rain, traffic, etc. It does wear away eventually after a few months, depending on weather.

ETA: Or they use flags if marking lines in a field.

Thanks, TroutMan.