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DNRC Headquarters
1539 Eleventh Ave. Helena, MT 59601
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Western Dam Engineering Technical Notes

Vol. 1 Issue 1 – March 2013: Siphons, Filter Design, Outlet Pipe Rehabilitation

Vol. 1 Issue 2 – July 2013: Wave Runup, Rip Rap Design and Outlet Pipe Venting

Vol. 1 Issue 3 – November 2013: Slope Stability, Estimating Precipitation and Earthwork Specifications

Vol. 2 Issue 1 – April 2014: Subsurface Investigations, Developing Inflow Design Hydrographs and "Team Effort" Specifications

Vol. 2 Issue 2 – July 2014: Soil Characterization, Conduit Repairs and Specification Tips

Vol. 2 Issue 3 – October 2014: Soil Characterization with Lab Testing, Reservoir Drawdown, Overtopping Failure Lessons Learned

Vol. 3 Issue 1 – Sinkholes, Hydraulics of Outlet Works and Shear Strength Characterization for Slope Stability Analysis
Vol. 3 Issue 2 Dam Safety Inpections "A Closer Look", Spillways on Small Dams and Geology 101 - Dam Good Foundations
Vol. 3 Issue 3 Spillway Erosion, Design Considerations for Outlet Controls and Guidance for Designing an Instrumentation Program
Vol. 4 Issue 1 Mobile Applications for Dam Engineers, Considerations for Pipe Rehabilitation using Cured-In-Place Pipe and a first on a series of Seepage Articles
Vol. 4 Issue 2 Dam, You're Getting Old! - Understanding and Managing the Risks of Aging Dams; Retrofitting Old Dams to Address New Hydrologic Inadequacies; Internal Erosion: Issues Just Below the Surface
Vol. 5 Issue 1 Thinking Fast - Emergency Response to Seepage and Internal Erosion; Calibration, Validation, and Verification: Bringing More Certainty to the Uncertainty of Hydrologic Modeling Results; Inspecting Corrugated Metal Pipes in Embankment Dams
Vol. 5 Issue 2  Employing Unmanned Aircraft Systems in Dam Inspection; Overtopping Protection of Embankment Dams; Cellular Grout Use in Conduit Sliplining; Mechanical Seals for Conduit Repair
Vol. 6 Issue 1 Risky Business - Introduction to Dam Safety Risk Assessment; When Spills Go Their Own Way - Evaluations of Concrete-Lined Spillways; Retrofitting Dams for Small Hydro
Vol. 6 Issue 2 What the HEC? - Selecting the Best HEC Model for the Job; Factoring for Human Factors in Dam Safety Incidents and Failures; Abandonment of Low-Level Outlet Conduits, Think it Through Before you Grout it Through
*NEW* Vol. 7 Issue 1 - Wise Up: DSS-WISE LITE as an Alternative Method for Breach Analysis and Consequence Estimation;  A Tool for Every Job: Statewide Probable Maximum and Extreme Precipitation Estimation
Contact Dam Safety
Dam Safety
DNRC Water Resources
1424 9th Avenue
PO Box 201601
Helena, MT 59620-1601


Bureau Chief
(406) 444-6816

Michele Lemieux, PE
Dam Safety Program Manager / Civil Engineer
(406) 444-6613

Chadrick Hill 
Civil Engineering Specialist
(406) 444-1358

Administrative Support
(406) 444-0862

, EI
Helena Regional Office
(406) 556-4508

Havre Regional Office
(406) 265-5516

Sam Johnson, PE
Billings Regional Office
(406) 247-4423

Larry Schock, CFM
Missoula Regional Office
(406) 542-5885

Marc Pitman, PE CFM
Kalispell  Regional Engineering Specialist
(406) 752-2713

Sterling Sundheim, CFM
Lewistown Regional Office
(406) 538-7459

, EI
Bozeman Regional Office
(406) 556-4508