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, and mitigation by all parties. This 2-hour webinar will examine typical risk categorization with a focus on dam safety during construction, the risk identification and...

This course will present potential failure modes for chute spillways and ways to design these spillways to minimize the potential for failure. 1. Understanding failure modes such as cavitation and hydraulic jacking that can affect chute spillways. 2. How to evaluate potential spillway design and construction details that could lead to failure modes. 3. How to evaluate potential spillway failure mode4. Understanding design details that can hel...

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 function of these features and what maintenance is required. This webinar will summarize seepage principles and terminology in layman's terms and describe the purposes and...

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, flexibility, speed and volume of data acquisition, and cost. This webinar presents an overview of drones and how this technology can be incorporated into dam safety inspections an...

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 cracked earth embankments. In the first section, general information is presented on which soils are most susceptible to cracking and which pose the greatest risk for fa...

Join us at the Loews Royal Pacific Resort at Universal Orlando September 8-12, 2019 for the premier dam and levee safety conference in the United States, Dam Safety 2019. This years event will bring together nearly 1,000 dam and levee safety professionals from across the country and around the world for a week of networking, knowledge transfer, and community building. With 2 general sessions, 38 concurrent sessions packed with over 115 present...

The seminar provides comprehensive instruction in inspection and evaluation techniques for dams. The principles, concepts and procedures taught will be readily adaptable to any organization conducting dam inspections and evaluating their compliance with current design standards. Participants learn about a variety of dam types and their appurtenances, the function of typical dam features, and common dam failure modes and the conditions that can...

In this classroom seminar, participants will gain a practical knowledge of methods for simulation of runoff from storm rainfall. The methods covered relate to the processing of historical and hypothetical (design-storm) rainfall data; estimation of losses (infiltration); transformation of rainfall excess to direct runoff with unit hydrographs; routing of flood waves; calibration of model parameters; and modeling of runoff from watersheds. Expe...

The objective of this course will be to provide a comprehensive presentation of the significant principles and concepts of soil mechanics to the participants. The material will be presented with emphasis on the basic soil mechanics principles prerequisite to further study for design or rehabilitation of earth embankment dams. This is a basic level course intended as an introduction for those with minimal to moderate knowledge or experience in...

This 2.5-day introductory course is designed to be a participatory, interactive workshop, which will cover the basic elements required to understand and evaluate seepage-related issues for earth dams. The first day begins with providing an understanding of why seepage mechanisms in earth dams are important to dam safety. Discussions of basic principles and characteristics of seepage related to embankment dams, various modes of seepage, and com...