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1539 Eleventh Ave. Helena, MT 59601
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Dam Safety Publications, Videos, Bulletins and News

Dam Safety in Montana - General Information

Dams in Montana
2022-03-03 State Permitted Dams.jpg
Montana High Hazard Dams Map
To download the map, right-click on
the link and select Save Link As.
Legal Liability of Dam
Ownership in Montana
Montana Dams and Hydropower

Is Your Dam Above Homes

Is your Dam above Homes, Highways or Other Structures?


MT Rainfall Runoff Guidance (April 2022)

High-Frequency Rainfall-Runoff Model Training Video



Dam Safety Program Webinars and Videos

To download the video, right-click on the link and select Save Link As.

Probable Maximum Precipitation in Montana (2019)
This webinar was recorded in 2019 and provides an overview of the state of practice in Montana for determining the Probable Maximum Precipitation.

Ruby Dam Rehabilitation
This video tells the fascinating story of the Ruby Dam Rehabilitation.

Inspecting Your Montana Dam
Tips, Advice and Instructions for completing a Dam Owner Annual inspection.

Instructions for Installing Shallow "Beck" Piezometers in Your Dam
Beck piezometers are shallow temporary piezometers that can be installed with equipment and tools available at a local hardware store. They can provide valuable information on seepage conditions at the toe of a dam for minimal cost.

Planning a Dam Construction Project - Permitting and the Design Review Process
Careful planning of a high hazard dam construction project is important for success. Learn more!

Planning a Dam Construction Project - Recommendations for Repair or Rehabilitation of Dams Not Permitted by Dam Safety
Even if your dam is not high hazard and does not require permits, careful planning is important for success. Learn more by watching this video.

Montana Dam Safety Program Publications

The Dam Owner Emergency Intervention Toolbox is a collection of helpful resources and case study summaries.  The toolbox contains innovative and effective emergency response solutions, best practices, response techniques, and other resources related to providing effective intervention during a dam emergency.  This toolbox can be used for emergency planning efforts, risk reduction, and dam owner training and outreach.  Forms and associated calculators can be found on the Cool Tools for Dam Safety Page.

In 2016, the Montana Dam Safety Program assembled a group of experts to evaluate our methodology for determining the inflow design flood for dam spillway analysis in MT. This report summarizes the groups finding and recommendations.

This report discusses research conducted by DOWL that evaluates the soil stresses that must be considered in a design when rehabilitating outlet works on small dams.

This publication developed by Morrison-Maeirle provides guidance to determine the best method to employ for reservoir drawdown. Both pumps and siphons effectively remove water from reservoirs and can provide the necessary increased capacity in emergency situations. Each site and event has unique circumstances which will determine the method best suited. This guidebook outlines a process using basic hydraulic and logistical considerations for determining the best method for reservoir drawdown. Part of this process includes outlining important factors to be used in decision making. Key topics for both pumps and siphons are explored in detail.

This publication provides guidance on the proper design and construction of chimney filters and drains.This technical note is intended to provide practical guidance for use by dam owners and engineers for the design and construction of chimney filter and drainage features for embankment dams, particularly small embankment dams. This technical note isnot intended to be an all-inclusive guide for design of filter and drain systems. Inmany instances, the document directs readers to other references that provide more detailed information. In addition, an extensive list of references on the topic is provided at the end of this document.

This tool provides tips and procedural guidance to organize your documents and emails electronically in order to memorialize both operational and institutional knowledge.  The suggested filing structure provides strategies (in the form of 'How-to' PDFs) that can be employed by Dam Owners and Operators to better maintain their records using digital filing techniques.  This guidance is designed to help Operators:
  • Minimize liability
  • Increase awareness and efficiency
  • Improve emergency response procedures
  • Better document knowledge and history
  • Organize digital files
  • Save correspondence (with special emphasis on Emails)
  • Create and utilize PDF files
  • Backup data
  • Implement useful file naming conventions
Introduction to the Montana Dam Safety Program


 Intro to the Dam Safety Program