All public logs

Combined display of all available logs of ASDSO Dam Safety Toolbox. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

21:16, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Fundamentals of Concrete Construction Inspections for Dams and Appurtenant Structures (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2021 |abstract=  This webinar will review field inspection of concrete structures for dams, water conveyances, and levees. Specific topics to be covered will include foundation preparation, reinforcing steel inspection, embedded items, formwork, concrete joints, waterstop installation, and conc...")
21:16, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Responding to Dam Emergencies (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2020 |abstract=  Many dam failures have been averted by dam owners and engineers taking quick and effective action to intervene and stop an active dam failure from progressing. The focus of this webinar is to present the most common failure modes at dams and provide information on actions that...")
21:00, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Judgment and Decision-Making in Dam Engineering (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2020 |abstract=  Dam engineering involves dams, but is done by and for people. As a result, in order to achieve dam benefits while maintaining dam safety, we need to understand not just dams, but also the people involved in designing, constructing, operating, maintaining, and benefiting from th...")
21:00, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Delhi Dam – A Compound Failure (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2020 |abstract=  This webinar will involve the presentation of the Delhi Dam failure case history. Delhi Dam failed on July 24, 2010 during a record storm. The failure was a result of a number of factors all contributing to the ultimate failure. The review of dam failure by a forensic team all...")
21:00, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Low-Level Conduits – What Can Go Wrong, How to Inspect, How to Repair? (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2020 |abstract=  This course will provide an overview of commonly observed issues associated with the most common type of spillway for relatively small dams (riser and low-level conduit). Importantly, the presentation will summarize methods to evaluate the condition of existing conduits and pre...")
21:00, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: The State of the Practice and Future of Dam Breach Modeling (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2020 |abstract=  This course will survey dam breach analysis methods currently in use. Differences in methodology, analysis steps, assumptions, and results will be described. Specifically, the course will focus on hydrologic routing of dam breach flood waves, 1D hydraulic routing, and 2D hydrau...")
20:51, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: The 1979 Machhu Dam Disaster: Social Origins and Social Consequences (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2020 |abstract=  In this webinar, Utpal Sandesara and Tom Wooten will discuss their book, No One Had a Tongue to Speak: The Untold Story of One of History’s Deadliest Floods. The course will cover the social causes and social consequences of the 1979 failure of the Machhu Dam-II in Gujarat, I...")
20:51, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Teton Dam – The Failure That Changed an Industry (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2020 |abstract=  While there have been many notable dam failures throughout the past century, the failure of Teton Dam in 1976 led to significant changes at the Bureau of Reclamation, in the Federal Government, and in the dam engineering industry. This course will provide information about the...")
20:51, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Concrete Repair and Maintenance for Dams (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2020 |abstract=  This course will provide an overview of the best methods and materials for concrete repair and maintenance. It will include a description of a systematic process to follow to achieve best results and will include information from recent industry wide research efforts to ensure...")
20:51, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Putting Public Safety First – The Oroville Dam Spillways Emergency Recovery (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2020 |abstract=  Starting in May 2017, DWR and its construction contractors began repairing and rebuilding Oroville’s main and emergency spillways. By November 1, 2018, the main spillway was successfully reconstructed, meeting DWR’s public safety construction milestone. Work on the emergenc...")
20:51, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Rock Scour Assessment for Dams, Spillways and other Water Conveyance Structures (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2020 |abstract=  Erodibility of dam foundations, spillways and other water conveyance structures is a critical issue for the safe operation of dams world-wide. The February 2017 events at the Oroville spillways that resulted in the evacuation of nearly 200,000 downstream residents were a recent...")
20:39, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Dam Overtopping Protection Systems Part 2 (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2019 |abstract=  This is the second of a two-part series on overtopping protection systems for embankment and concrete dams. Many dams today have insufficient spillway capacity and may be overtopped during large floods below the regulatory requirement. In recent years, dam overtopping protectio...")
20:39, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Dam Overtopping Protection Systems Part I (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2019 |abstract=  This is the first of a two-part series on overtopping protection systems for embankment and concrete dams. Many dams today have insufficient spillway capacity and may be overtopped during large floods below the regulatory requirement. In recent years, dam overtopping protection...")
20:39, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: WinDAM - Overtopping and Internal Erosion for Earthen Embankments (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2019 |abstract=  WinDAM software estimates the erosion and breach outflows from overtopping flows and internal erosion flows affecting earthen embankments. This webinar will provide an overview of the WinDAM model and the various inputs needed. The webinar will also cover output from WinDAM. Th...")
20:39, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Best Management Practices for Waterstop Selection, Installation, and Inspection (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2019 |abstract=  This course is intended to provide guidance on the proper selection and installation of waterstops for hydraulic structures. This course will discuss the various types and applications of waterstops and discuss the necessary design constraints such as site constraints, joint ty...")
20:39, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Relearning How to Look at Piezometric Data for Seepage Evaluation (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2019 |abstract=  This webinar will start with the most basic seepage concepts and finalize on actual evaluation of piezometric data for earth dams and levees. Simple basic seepage ideas using high graphic illustrations will be the means to teach all concepts in this webinar. Also, numerous diff...")
20:39, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Intro to Post-Tensioned Anchors for Dams (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2019 |abstract=  The course will describe the evolution of prestressed rock anchor technology as applied for over 50 years to dams in North America. This evolution will be presented through an analysis of the successive phases of the PTI “Recommendations” documents, which constitute the ref...")
19:44, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Intro to Cavitation in Chutes and Spillways (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2019 |abstract=  The course is intended to give the participants an understanding of cavitation on chutes and spillways. The course will be introduced with a video of a case study that illustrates some of the fundamentals of cavitation and an explanation of why cavitation causes damage. Followi...")
19:44, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Lawn Lake Dam: Pre-Failure Comprehensive Dam Safety Evaluation and Post Failure Impacts (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2019 |abstract=  Lawn Lake Dam, located in Rocky Mountain National Park, failed suddenly and catastrophically on a sunny day in July 1982, and resulted in over $30 million dollars in damage and the loss of 3 lives. This webinar will explore the history of the dam, construction features responsi...")
19:44, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Internal Erosion – Applying Erosion Mechanics From ICOLD Bulletin 164 In Internal Erosion Failure Mode Analyses (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2019 |abstract=  Internal erosion causes about half of all failures of water-retaining earth embankment dams. Similar statistics apply to levees. Internal erosion occurs when the hydraulic loads imposed by water seeping through the pores or flowing through cracks and openings in the soils in em...")
19:44, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: How to Conduct a Successful PFMA - Lessons Learned from Past Successes and Failures (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  Potential failure modes analyses (PFMA) was first used in dam safety over twenty years ago. Although thousands of PFMA workshops have been conducted since it was first introduced, the use and application of PFMAs is still mostly limited to larger federal agencies and occasional...")
19:44, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Why Embankments Crack and How to Fix Them (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  This course is based on 50 years of NRCS experience with investigating and remediating cracked earth embankments. The presentation consists of two main sections, covering 1) the nature of soil cracking and the associated internal erosion failure modes; and 2) how to remediate c...")
19:44, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Drone Technology Integrated into Dam Safety Inspections and Evaluations (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  During recent years the use of unmanned aerial vehicles (UAVs) or drone technology for the inspection and monitoring of dams and levees has increased. This rate of integration is, in part, due to FAA regulation revisions and the advantages regarding personnel safety, flexibilit...")
19:44, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Human Factors in the Oroville Dam Spillway Incident (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  Oroville Dam is the tallest dam in the United States. On February 7, 2017, a section of the concrete chute slab of the service spillway failed during spillway discharge, and several days later the emergency spillway was activated for the first time in the half-century history o...")
19:32, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Evaluation and Maintenance of Piezometers, Relief Wells, and Drains in Dams and Levees (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  Many dams and levees have embankment drains, structure underdrains, and relief wells to control seepage through and beneath the dam and piezometers to monitor the performance of these features. Dam and levee owners, managers, and maintenance staff may be uncertain about the fun...")
19:32, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Designing Spillways to Mitigate Failure Modes (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  This course will present potential failure modes for chute spillways and ways to design these spillways to minimize the potential for failure. Key Take-aways: *Understanding of failure modes such as cavitation and hydraulic jacking that can affect chute spillways. *Evaluation...")
19:32, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Reexamination of the 2004 Failure of Big Bay Dam, Mississippi (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  This webinar will review the 2004 failure of Big Bay Dam. A potential failure modes framework was used to make the forensic root-cause assessment based on data and information provided by the state of Mississippi. A detailed timeline of the failure obtained through review of co...")
19:32, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Managing Increased Dam Safety Risk During Reconstruction (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  Dams are inherently vulnerable during rehabilitation construction due to risks such as a weakened/reduced cross section of the structure or reduced flood passage capacity. Successful management of the risks salient to dam construction requires proactive identification, planning...")
19:32, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Analysis of Concrete Arch Dams (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  The purpose of this course is to provide a brief introduction into the science of concrete arch dams. The review will touch on design methods used in the past, but primarily focus on the methods used in the current state of the practice. A historical review of construction tech...")
19:32, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Risk Communication for Dams (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  Communication is important in all aspects of dam safety within an organization, with the public, and with the specific owners or stakeholders of a project. Risk communication and stakeholder participation should ensure that (1) responsible and impacted stakeholders will be part...")
19:32, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Findings of the Oroville Dam Spillway Forensic Investigation (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2018 |abstract=  At a height of 770 feet, Oroville Dam is the tallest dam in the United States. On February 7, 2017, a section of the concrete chute slab of the service spillway at Oroville Dam failed during spillway discharge. Several days later, as the California Department of Water Resources...")
19:32, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Introduction to Addressing Inadequate Conveyance Capacity at Dams (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2017 |abstract=  The most common deficiency at dams in North America is inadequate spillway capacity. Inadequate spillway capacity can result in overtopping of a dam during flood events. This is especially a concern for embankment dams where overtopping of the dam embankment can cause breaching...")
17:06, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Advances in Geologic Data Collection and 3D Geologic Modeling for Site Characterization and Safety Studies for Dams and Levees (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2017 |abstract=  This course will address a variety of geologic issues in dam and levee design and safety engineering, with emphasis on the application of 3D geologic modeling and other technologies to enhance communication between the project geoscientists and the project engineers, regulators...")
17:06, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Design of Siphon Systems (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2017 |abstract=  Since at least the time of the ancient Egyptians, siphons have been a useful tool to transport fluids in conduits by arranging the conduit in an inverted “U” and relying on gravity to eliminate the need for a pump. In the United States, siphons have been used as spillways a...")
17:06, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Natural Resources Conservation Service Dam Design and Dam Safety Resources: Policy, Procedures, and Tools (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2017 |abstract=  This webinar will provide an overview of multiple dam design and dam safety resources available from the Natural Resources Conservation Service (NRCS). The overview will include a presentation on the NRCS history of building dams and dam safety. The policy presentation will foc...")
17:01, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: How to Make Your Emergency Action Plan More Effective (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2017 |abstract=  In the last forty years, dam safety professionals have recognized the importance of preparing emergency actions plans (EAPs) as an effective tool to minimize the consequences of dam failures. In the last 15 years, the National Incident Management System (NIMS) was established a...")
17:01, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Introduction to Nature-Like Fishways for Dams (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2017 |abstract=  Dam-related problems include blockage of fish migrations, drowning hazards, failure hazards, reservoir sedimentation, habitat loss, and tailwater erosion. Some environmental problems can only be addressed through dam removal while other issues, where removal is not a viable opt...")
17:01, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Underwater Installation of Geomembranes (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2017 |abstract=  Rehabilitation of dams with geomembranes has stopped seepage in more than 200 dams worldwide. In the 1990s, the US Army Corps of Engineers recognized that geomembranes could arrest seepage in many structures but many structures in the U.S. could not be dewatered for installatio...")
17:01, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: The Fontenelle Dam Incident 1965 (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2017 |abstract=  Fontenelle Dam incident was, arguably, the largest dam incident in US history that did not result in failure. A large leak developed in Bureau of Reclamation’s new dam and quickly eroded a very large cavity on the downstream slope. It was only through large-scale and prompt i...")
17:01, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Risk Assessment for Levee Projects (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2017 |abstract=  The USACE has been conducting economic risk analyses for evaluating benefit cost ratios for levee projects since the 1960s. With a new focus on life safety, these same analytical techniques are now being used to evaluate priorities for infrastructure investments and required de...")
17:01, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Introduction to Dam Decommissioning (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2016 |abstract=  As dams deteriorate, or as their purpose and benefits diminish, there may come a time when the appropriate action is to decommission the dam. For some dams, this can be a very simple, rapid and inexpensive undertaking. For other dams, it can be a very complex and costly process...")
16:50, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Intro to Tailings Dam and Coal Ash Impoundment Design, Construction and Monitoring: What Can Go Wrong and Right? (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2016 |abstract=  A large difference between water storage dams versus tailings dams and coal ash impoundments is that these industrial structures are always under construction. This provides the opportunity to optimize design and construction but places an emphasis on ongoing evaluation and mon...")
16:50, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Hydrologic Hazards – Estimating Probabilities of Extreme Floods (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2016 |abstract=  Hydrologic hazard curves are critical flood loading inputs for dam and levee safety risk assessments. Over the past decade, some federal agencies have developed and applied new tools and data sets to estimate hydrologic hazard curves, which are graphs of peak flows, volume, or...")
16:50, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: The Practical Use of Geophysics to Assess Dam and Levee Safety (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2016 |abstract=  The webinar consist of two sessions. Session 1 is an overview of geophysical methods applicable to dams and levees, theory behind the methodologies, and the strengths and limitations of each method. This session will also cover what additional investigations, such as drilling,...")
16:45, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: 3-D Effects on Estimation of Gradients, Seepage Flows and Evaluation of Internal Erosion Potential Failure Modes (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2016 |abstract=  This webinar will present the results of 2D and 3D numerical evaluations of seepage conditions around a developing piping defect. An updated model similar to the first 3D numerical model performed at the University of Florida beginning in about 1980 (Townsend, 1981) will be pr...")
16:45, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Cracking and Hydraulic Fracturing in Embankment Dams and Levees (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2016 |abstract=  Cracks are likely to develop in most embankment dams and levees, and not just in those that are poorly constructed. This course will present some of the common conditions that can lead to adverse geostatic stress conditions, cracking, and hydraulic fracturing in embankments. Ca...")
16:45, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Strength Selection for Static Slope Stability Analysis (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2016 |abstract=  This webinar will provide practical guidance on the selection of soil shear strength parameters for static slope stability analysis. Topics covered include stress-strain behaviors of cohesionless and cohesive soils and their relationships to strength selection, drained and undr...")
16:45, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Spillway Conduits - More Than Just a Pipe Through the Dam (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2016 |abstract=  Low-level conduits (pipes) through the base of a dam are the most common spillway for small earthen embankment structures. However, the discontinuity caused by the presence of the conduit creates numerous issues that must be addressed during the design and construction of the l...")
16:45, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Foundation Cutoff Walls for Dams and Levees (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2016 |abstract=  During the last 10 years, there have been unparalleled levels of activity in dam and levee foundation remediation. This has been triggered mainly by the U.S. Army Corps of Engineers’ evaluation of their dam and levee portfolio following the disastrous flooding of New Orleans...")
16:45, 19 August 2022 Camrenbt talk contribs created page On-Demand Webinar: Dam Safety with 3D Weirs (Created page with "{{Trainings Template |author=  Association of State Dam Safety Officials |year=  2016 |abstract=  Inadequate spillway capacity, significant hydrologic loadings on embankments and structures, and operation and maintenance are common dam safety issues, instigating the need for risk-reduction measures and/or rehabilitation. 3D weirs, or weirs with a crest length greater than t...")