Dam Safety

Ruby Dam

The Dam Safety Program regulates the construction, operation and maintenance of Montana's dams to protect life and property from damages due to failure. The dam safety program also provides training and outreach to dam owners and engineers and assists with emergency preparedness activities.

 Is Your Dam Above Homes, Highways, or Other Structures?

For Dam
Owners For Dam Owners - click here

Technical References/Links
Technical References and Links - click here

Permitting Your
Existing Dam
Permitting Your Existing Dam - click here


Proposing to
Build a New Dam
Proposing to Build a New Dam - click here

Planning for a
Dam Emergency
Planning for an Emergency - click here

Proposing to Repair
an Existing Dam
Proposing to Repair an Existing Dam - click here


Rules and
Rules and Regulations - click here

Image and
Video Gallery
Image Gallery/Misc. Information - click here

Filing a Dam Safety Complaint
Rules and Regulations - click here


Cool Tools
Cool Tools

Western Dam Engineering Technical Notes
Vol. 1 Issue 1 – Siphons, Filter Design Outlet Pipe Rehabilitation
Vol. 1 Issue 2 – Wave Runup, Rip Rap Design and Outlet Pipe Venting
Vol. 1 Issue 3 – Slope Stability, Estimating Precipitation and Earthwork Specifications
Vol.2 Issue 1 – Subsurface Investigations, Developing Inflow Design Hydrographs and "Team Effort" Specifications
Vol. 2 Issue 2 – Soil Characterization, Conduit Repairs and Specification Tips
Vol. 2 Issue 3 – Soil Characterization with Lab Testing, Reservoir Drawdown, Overtopping Failure Lessons Learned

Manual on Corrugated Metal Pipe in Dams for Montana Dam Owners: Problem identification and Evaluation, Inspection, Rehabilitation, Repair and Replacement

News and Announcements
Ruby Dam Rehabilitation Video
Try the new Interactive Inundation Area Mapping Service


Dept. of Natural Resources & Conservation
1625 Eleventh Ave.
Helena, MT 59601
Phone: (406) 444-2074
Fax: (406) 444-2684