Dams and Extreme Events — Reducing Risk of Aging Infrastructure under Extreme Loading Conditions

Transverse Cracking on Embankment Dams Caused by Earthquakes Revisited (Donald H. Babbitt, Consulting Civil/Geotechnical Engineer)

Prediction of Seismically-Induced Longitudinal/Transverse Vertical Cracks in Embankments with Upstream Concave Curvatures (Mohsen Beikae, Metropolitan Water District of Southern California)

Comparison of Liquefaction Susceptibility Criteria (Richard J. Armstrong and Erik J. Malvick, California Department of Water Resources)

Lessons Learned from FLAC Analyses of Seismic Remediation of Perris Dam (Steven Friesen, Ariya Balakrishnan and Mike Driller, California Department of Water Resources; Mike Beaty, Beaty Engineering LLC; and Rajendram Arulnathan, Erik Newman and Sathish Murugaiah, URS Corporation)

Seismic Issues at Scoggins Dam (Ron Oaks and Bryan Scott, Bureau of Reclamation)

Risk of Seismic Deformation of a 1930’s Embankment Dam in a Highly Active Seismic Environment (Justin Phalen and Faiz Makdisi, AMEC Environment & Infrastructure; Lelio Mejia, URS Corporation; and Michael Mooers, Santa Clara Valley Water District)

Influence of Stratigraphic Interfaces on Residual Strength of Liquefied Soil (Jack Montgomery and Ross W. Boulanger, University of California, Davis)

Implementing Nonlinear Analysis of Concrete Dams and Soil-Structure Interaction under Extreme Seismic Loading (Mark Schultz, Phu Huynh and Vojislav Cvijanovic, California Department of Water Resources)

Performance-Based Analysis of a Large Concrete Dam (Joshua B. Edelman, Peter J. Orme, Madeline R. Goldkamp, Tamara H. Savage and Ziyad Duron, Harvey Mudd College; and Mike Knarr, Southern California Edison Company)

Performance-Based Testing of a Large Concrete Dam (Madeline R. Goldkamp, Tamara H. Savage, Joshua B. Edelman, Peter J. Orme, and Ziyad Duron, Harvey Mudd College; and Mike Knarr, Southern California Edison Company)

Application of Nonlinear Analysis Methods to Hydraulic Structures Subject to Extreme Loading Conditions (Vojislav Cvijanovic, Mark Schultz and Richard Armstrong, California Department of Water Resources)

Utilising the Curved Footprint of an 80 Year Old Gravity Dam to Aid Performance during Extreme Earthquakes (Peter Amos and John Black, Damwatch Services Ltd; Roy Dungar, Consultant; and Jim Walker, Meridian Energy Ltd)

Cracking Analysis of Concrete Gravity Dams (Abdelkrim Kadid and Ali Zine, University of Batna; and Djarir Yahiaoui, University of Constantine)

Finite Element Analysis of Dynamic Behavior of Large Dams (W.P. Kikstra, F. Sirumbal, G. Schreppers and M. Partovi, TNO DIANA BV)

An Approach to Evaluating the Dynamic Strength of Soils at Dam Sites (Erik J. Malvick, Richard J. Armstrong, Kristen Martin and Phu L. Huynh, California Department of Water Resources)

Probabilistic Liquefaction Hazard Analysis (Mohsen Beikae, Metropolitan Water District of Southern California)

Seismic Stability Evaluation of Dam Underlain by Coarse-Grained Alluvium (Lelio Mejia, URS Corporation; Jiaer Wu, CHEC USA, Erik Newman, URS Corporation; and Michael Mooers, Santa Clara Valley Water District)

Foundation Liquefaction Evaluation for the Remediation of the Isabella Auxiliary Dam (David C. Serafini, Henri V. Mulder and Vlad G. Perlea, Corps of Engineers)

Characterization of Gravelly Soils for Liquefaction Potential Assessment at Dam Sites Using the iBPT (Mason Ghafghazi, Jason T. DeJong, Alexander P. Sturm and Daniel W. Wilson, University of California, Davis; Craig Davis and Adam Perez, Los Angeles Department of Water and Power; and Richard Armstrong, California Department of Water Resources)

Current Seismic Tools Used to Evaluate a 1914 Concrete Arch Dam (Dina Bourliea Hunt, Bashar Sudah, Jennifer Fordney, Glenn Tarbox and David Thompson, MWH Global; and Scott Willis, Alaska Electric Light & Power Company)

Adverse Geological Conditions and Piping Practical Considerations when Evaluating Seepage (Ray E. Martin, REM, LLC; and Joseph S. Monroe, Schnabel Engineering, Inc.)

Proposed Retrofit Concepts for Chabot Dam (Sean Todaro, Atta Yiadom and Catherine Anderson, East Bay Municipal Utility District)

Laboratory Modeling of Soil Erosion into Bedrock Defects (John D. Rice, Utah State University; Kenneth E. Henn, Corps of Engineers; and John W. Kovacs and Brian H. Greene, Gannett Fleming, Inc.)

Some Findings from the ICOLD Bulletin on Internal Erosion in Existing Dams (Rodney Bridle, Dam Safety Ltd)

Right Abutment Seepage Mitigation at Ochoco Dam (Dennis L. Hanneman, Bureau of Reclamation; and Mark Pabst, Corps of Engineers)

Probabilistic Constriction Size Application for Earth Dam/Levee Filter Design (Sangho Lee, GESTRA Engineering Inc.; and Samuel S. Lee, Federal Energy Regulatory Commission)

Evaluating the Mechanics of Piping Erosion Initiation Through Laboratory Modeling (John Rice and Mandie Fleshman, Utah State University)

Dam Abutment Seepage Investigation and Erosion Repair (Michael McCaffrey, Parsons Brinckerhoff; Mark J. Gross, Alcoa Power Generating Inc.; and Tony Plizga and Paul F. Shiers, Parsons Brinckerhoff)

A Screening Tool for Identifying Potential Downstream Hazards (Lissa Robinson and Chris Karam, GEI Consultants, Inc.; and Robert White and Luyin Zhu, Pacific Gas & Electric Company)

Poe Dam Radial Gate Strengthening Project: Challenge Accepted (Robert T. Indri, Schnabel Engineering, Inc; Mohammad Aslam, Pacific Gas & Electric Company; Chris Cornell, Syblon-Reid Construction; Keith De Lapp, HDR Engineering, Inc.; Stephen Hom, URS Corporation; and Frederick Lux, Aubian Engineering, Inc.)

U.S. Army Corps of Engineers Tainter Gate Retrofits for Extreme Load Cases (Gavin Smith and Matt D. Hanson, Corps of Engineers)

System Reliability Analysis of Rock Scour (Michael F. George, Nicholas Sitar and Armen Der Kiureghian, University of California, Berkeley)

Increasing the Flood Capacity of a 95 Year Old Dam (Kevin Finn, Parsons Brinckerhoff; John Vallee, Brookfield Renewable Power; and Marc Buratto and Bryce Mochrie, Parsons Brinckerhoff)

Design Flood Determination for the Victoria Dam Spillway Improvement Project (Ben Trotter, Integrys Business Support, LLC; Raymond Wingert, HDR Engineering, Inc.; and Virgil Schlorke, Upper Peninsula Power Company)

Snowmelt Hydrology in the Libby Dam Probable Maximum Flood Computation (Kevin Fagot and Henry Hu, WEST Consultants, Inc.)

Calculating Probable Maximum Precipitation in Complex Terrain: Updating HMR 59 for California (Ed Tomlinson and Bill Kappel, Applied Weather Associates, LLC)

Selecting and Accommodating Inflow Design Floods for Dams: A Behind-the-Scenes Look at Updating Federal Guidance (Paul G. Schweiger and Gregory L. Richards, Gannett Fleming, Inc.; Arthur Miller, AECOM; James E. Demby, Federal Emergency Management Agency; and Amanda J. Hess, Gannett Fleming, Inc.)

Comparison of 2-Dimensional Hydraulic Models for Assessing Levee Breach Inundations (Chris Bahner, WEST Consultants, Inc.)

2-Dimensional Dam-Break Inundation Modeling Provides Better Information for Risk and Emergency Planning (Tom Molls and Brian Brown, David Ford Consulting Engineers, Inc.; Mark Fortner, GEI Consultants, Inc.; and David Panec, California Department of Water Resources)

Urban Reservoir Breach Analysis and Flood Inundation Mapping (Dragoslav Stefanovic, Pedro Miguel Parames and Martin J. Teal, WEST Consultants, Inc.)

Ohio Statewide PMP Study — Replacing HMR 51: Methods, Processes, Results (Bill Kappel, Ed Tomlinson and Doug Hultstrand, Applied Weather Associates, LLC)

Embankment Dam Seepage Modifications — Choices and Considerations (John W. France, URS Corporation)

Rehabilitation of the Fort Randall Dam Spillway (Clinton L. Powell, Corps of Engineers)

Gilboa Dam — Major Reconstruction to Withstand Extreme Events (and Getting One) (Boyd Howard, Gannett Fleming, Inc.; Emory Chase and Thomas DeJohn, New York City Department of Environmental Protection; and Aaron Rietveld, Barnard-D.A. Collins JV)

Making Do with What You Have at the Long Hollow Dam Project (Rick Ehat, La Plata Water Conservancy District; Chad Masching, GEI Consultants, Inc.; and Aaron Chubbuck, Weeminuche Construction Authority)

Emergency Repairs to ODNR's Dam No. 6 — Muskingum Lock and Dam System, Stockport, Ohio (Pete Nix, Tetra Tech)

Rehabilitation Technologies to Respond to Changing Loading Conditions at a 114 Year Old Structure (Bryce Mochrie, Parsons Brinckerhoff; Lee Talbot, Brookfield Renewable Power; and Kevin Finn and Peter Bouchie, Parsons Brinckerhoff)

Lower Crystal Springs Dam Improvements Project (Myron Humeny, San Francisco Department of Public Works; Tasso Mavroudis, San Francisco Public Utilities Commission; Marty Czarnecki, URS Corporation; Chu Liu, San Francisco Department of Public Works; and Noel Wong, URS Corporation)

Alliance Contracting: A Flexible Approach to Promote Innovation and Deal with Uncertainty (David Murray, CDM Smith Australia Pty Ltd)

Water Over the Dam — RCC Dams/Cofferdams Performance When Overtopped During Construction (Kenneth D. Hansen, Consulting Engineer; and Daniel L. Johnson, Tetra Tech, Inc.)

Los Alamos Canyon Dam: Development of RCC Mix Designs and Construction Challenges (Henrik Forsling and Scott Jones, URS Corporation; Tim Glasco, County of Los Alamos; and Bud Werner, CTL|Thompson Materials Engineers, Inc.)

Construction Techniques for RCC Placement — San Vicente Dam Raise (Frank Collins, Parsons; Gerard E. Reed III and Wade Griffis, San Diego County Water Authority; Jim McClain, Black & Veatch Corporation; and Richard Burdette, Parsons)

Construction of La Romaine Complex in Northern Quebec, Canada: Five Years of Great Accomplishments (Vlad Alicescu, Hydro-Québec)

We Got How Much Rain? Emergency Repairs at East Reservoir Dam (Pete Nix and Steven Riedy, Tetra Tech)

Earthquake Analysis of Concrete Gravity Dams: Factors To Be Considered (Anil K. Chopra, University of California, Berkeley)

Evaluation of Morrow Point Dam and Potentially Removable Foundation Block Using Risk (Phoebe Percell, Bureau of Reclamation)

Comparison of Recorded and Computed Earthquake Response of Arch Dams (Anil K. Chopra, University of California, Berkeley)

Tensile Strength of Mass Concrete — Implication of Test Procedures and Size Effects on Structural Analysis of Concrete Dams (Timothy Dolen, Dolen and Associates; David W. Harris, Consultant; and Larry K. Nuss, Nuss Engineering)

Updating Existing Instrumented and Visual Monitoring Plans Following a Potential Failure Modes Assessment (Bruce R. Rogers, Corps of Engineers; Jay N. Stateler, Bureau of Reclamation; and Manoshree Sundaram, MWH)

Diamond Valley Lake Automated Data Acquisition System Upgrade (Evelyn Ramos and Christopher Hill, Metropolitan Water District of Southern California)

Rehabilitation of Piezometers at the Blenheim-Gilboa Pumped Storage Project — Restoring a “Classic” (John G. DeLano and James P. Guarente, GZA GeoEnvironmental, Inc.; Robert J. Knowlton, Junyu Liang and David Weiman, New York Power Authority; and Chad W. Cox, GZA GeoEnvironmental, Inc.)

Accuracy of Stress Data Measured by Earth Pressure Cells Installed in Embankment Dams (Abolfazl Hojjat Ansari and Ali Asghar Mirghasemi, University of Tehran)

Evaluating In-Situ Stress Behavior in Alkali-Silica Reactive Dams: Roanoke Rapids Dam (Brian R. Reinicker and Farzad Abedzadeh, HDR Engineering, Inc.; Robin G. Charlwood, Robin Charlwood & Associates, PLLC; and John A. Cima, Dominion Resources Services, Inc.)

Remote Technology Provides a Safe Alternative for Dam Face Assessment (Richard Engel, ASI Group Limited)

Detection of Weakness Zones in Helena Levee, AR, Using Ground Penetrating Radar (Hussein Khalefa Chlaib, M. Mert Su, Najah Abd, Aycan Catakli, Hanan Mahdi and Haydar Al-Shukri, University of Arkansas at Little Rock)

A Comparison of the FOSM-BT Method to a More Rigorous Reliability Method (John Rice and Lourdes Polanco, Utah State University)

A Method for Estimating Soil Properties for Transient Seepage Analyses of Levees (Matthew D. Sleep, Oregon Institute of Technology)

Cutoff Wall Remediation (Rich Millet, URS Corporation; and Mary Perlea, Corps of Engineers)

Geotechnical Challenges and Design Approach for the Feather River West Levee in California (Khaled Chowdhury, URS Corporation; Derek Morley, Corps of Engineers; Leslie Harder Jr., HDR Engineering, Inc. Michael Hughes, Robert Green, Francke Walberg and Matthew Weil, URS Corporation; and Mike Inamine, Sutter Butte Flood Control Agency)

Levee Reliability: How Do We Know When We Need a New Levee? (Brian Hubel, Black & Veatch Corporation; and Carmen Berry, Civil Engineer)

Logan Martin Dam, Alabama: 45 Years of Remedial Grouting (Donald A. Bruce, Geosystems, L.P.; Brian H. Greene, Consulting Engineering Geologist; and Bobby E. Williams and John H. Williams, Southern Company)

Applicability of Levee Fragility Functions Developed from Japanese Data to California’s Central Valley (Dong Youp Kwak and Scott J. Brandenberg, University of California, Los Angeles; Atsushi Mikami, The University of Tokushima; Ariya Balakrishnan, California Department of Water Resources; and Jonathan P. Stewart, University of California, Los Angeles)

Draft Guidelines for Seismic Evaluation of Levees (Vlad Perlea, Mary Perlea and George Hu, Corps of Engineers; and Khaled Chowdhury, URS Corporation)

Needs-Oriented Project Evaluation Tool (NOPET) (David Moore, Tetra Tech; Dwayne Bourgeois, North Lafourche Conservation Levee and Drainage District; and Patti Sexton, Tetra Tech Dam Safety)

Lessons Learned from Concrete Dam Failures Since St. Francis Dam (Larry K. Nuss, Nuss Engineering, LLC; and Kenneth D. Hansen, Consulting Engineer)

Development of a Functional Exercise to Maximize Public Safety Cooperation and Emergency Preparedness (Justin Darling, Northern Indiana Public Service Company)

Pine Creek Dam Risk Management Plan Process and Decision (Kathryn A. White and D. Wade Anderson, Corps of Engineers)

A Risk Assessment with the FERC (Guy S. Lund, URS Corporation; and Bill Christman and Gene Yow, Chelan County Public Utility District No. 1)

What is the Most Important Loading Condition for Dam Safety? (William Engemoen, Daniel Osmun and

William Fiedler, Bureau of Reclamation Anderson Dam Seismc Retrofit Project: Utilizing Project Risk Analyses to Support)

Management Decisions (Emmanuel Ayree, Santa Clara Water District; and Brian Hubel and Chris Mueller, Black and Veatch)

ISO Standards Applied to Dam Sector Security Risk Methodologies (William F. Foos, Gannett Fleming, Inc.; and Joachim A. Gloschat, Consultant)

Reexamination of the 2004 Failure of Big Bay Dam, Georgia (Keith A. Ferguson, Scott Anderson and Elena Sossenkina, HDR Engineering, Inc.)

Addicks and Barker Dam Safety Modifications Project (Bobby Van Cleave, D. Wade Anderson, Gary Chow and Andrew Weber, Corps of Engineers)

Spillway Modification to Address Potential Failure Mode (John C. Stoessel, Southern California Edison Company; Craig McElfresh, MCS Construction, Inc.; C. Micheal Knarr, Consulting Civil Engineer)

Reclamation’s New Life Loss Estimating Methodology (William Fiedler, Daniel Osmun, William Engemoen and Bruce Feinberg, Bureau of Reclamation)

Why Are Dams Failing Before They Reach Their Spillway Design Capacity? (Eric Gross and David W. Lord, Federal Energy Regulatory Commission)

Robustness and Consequence Based Assessment of an Existing Dam (Valerio De Biagi and Bernardino Chiaia, Politecnico di Torino; and Alessandro Calvi and Francesco Fornari, ENEL Production S.p.A)

CPTu-Based State Characterization of Tailings Liquefaction Susceptibility (Christina Winckler, Richard Davidson and Lisa Yenne, URS Corporation; and Joergen Pilz, Rio Tinto T&I)

Pore Pressure Characterization of Impounded Tailings (Christina Winckler, Richard Davidson and Lisa Yenne, URS Corporation; and Matt Gallegos, Rio Tinto)

Two-Dimensional Numerical Analysis of Dynamic Response of a Tailings DamUsing UBCSAND Model: A Case Study (José Zuta, Itasca S.A.; Varun, Azadeh Riahi and Loren Lorig, Itasca Consulting Group Inc.)

Cobbs Creek Reservoir and Dam: Offline Storage — Capturing Today’s Water for Tomorrow’s Demand (Mark E. Landis, Schnabel Engineering, Inc.; Paul E. Peterson, ARCADIS US, Inc.; and Jonathan M. Pittman, Schnabel Engineering, Inc.)

Determining the Feasibility of Fish Passage — Calaveras Dam Replacement Project, California (Jonathan Stead and Steve Leach, URS Corporation; and Craig Freeman and Susan Hou, San Francisco Public Utilities Commission)

Securing Approvals for Large Scale Spoils Disposal at a Dam Replacement Project (Steve Leach and John Roadifer, URS Corporation; and Craig Freeman, Dan Wade and Susan Hou, San Francisco Public Utilities Commission)

Traditional Cement Grouts Versus Stable, High-Mobility Grout — A Case Study at the Crafton Hills Dams (Holly Nichols, Ante N. Mlinarevic and G. Robert Barry, California Department of Water Resources)

Foundation Improvements — Design and Construction for the New Ragged Mountain Dam (Randall P. Bass and J R. Collins, Schnabel Engineering, Inc.)

Treatment of Gravity Dam Foundations During Construction (Conrad Ginther, Jared Deible and Paul C. Rizzo, Paul C. Rizzo Associates, Inc.)

Building an RCC Dam on a Karstic Foundation and a Tight Schedule (Victor M. Vasquez, Tina Stanard, Mathew L. Moses, M. Leslie Boyd and Adam Payne, Freese and Nichols, Inc.)

Slope Stability, Geology, and Rock Reinforcement, Folsom Auxiliary Spillway Joint Federal Project, CA (Kylan A. Kegel and Tatia R. Taylor, Corps of Engineers)

Effective Surveillance and Monitoring Allows a Phased Approach to Stabilization (Gerald Robblee, Andy Baxter, Robert Cannon and Jesus Gomez, Schnabel Engineering, Inc.; and Adam J. Monroe, Consumers Energy)

Generation YP: Increasing Young Professional Involvement in Dam Safety (Emily Schwartz, HDR Engineering, Inc.; Amanda Sutter, Corps of Engineers; and Elena Sossenkina, HDR Engineering, Inc.)

Engineering Geologic Conditions at the Calaveras Dam Replacement Project, Alameda County, California (Keith Kelson, Phil Respess and Erik Newman, URS Corporation; and Daniel Wade, Susan Hou and Gilbert Tang, San Francisco Public Utilities Commission)

Update on the Calaveras Dam Replacement Project (Michael Forrest and John Roadifer, URS Corporation; and Daniel L. Wade, Susan Hou and Gilbert Tang, San Francisco Public Utilities Commission)

Dam Foundations & Differing Site Conditions — Calaveras Dam Replacement Project (Jeffrey M. Bair, Terence M. King and Christopher G. Mueller, Black & Veatch Corporation; and Daniel L. Wade and Susan S. Hou, San Francisco Public Utilities Commission)