811 In Your State

South Dakota

Explore damage prevention information, local contacts and rules for safe digging in South Dakota.

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South Dakota 811
811 or 1-800-781-7474

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Details

Address:
P.O. Box 187
Rapid City, SD 57709

Hours
24 / 7

Advanced Notice: 48 hours, excluding weekends and holidays
Number of days in advance of a digging project that you need to notify the one call center of your intent to dig.

Marks Valid: 21 working days from the start date on the ticket so long as the marks are visible
Defines the period of time the facility marks (paint, flags, stakes, etc.) are valid according to state law or practice.