The webinar will discuss the basics of various non-destructive evaluation (NDE) methods and their applications for investigating dam, spillway and conduit conditions such as freeze-thaw cracking, void, seepage, corrosion of reinforcing, anchor bolts, strength/moduli, and stability. Guidance will be provided as to which NDE methods are useful for diagnosing various conditions of concrete, masonry, earthen and steel materials. The webinar will...

Fluid Mechanics provides the theoretical foundation for hydraulics, which focuses on the engineering uses of fluid properties. Hydraulic topics include concepts such as pipe flow, dam design, pumps, hydropower, flow measurements, and open channel flow. The flow of water in an open channel in natural rivers is common, however, the solution to estimate water surface elevations can be a difficult problem when everything is considered, especially...

Hydrology is the study of the movement, distribution, and quality of water throughout the Earth, and thus addresses both the hydrologic cycle and water resources. A practitioner of hydrology is a hydrologist, working within the fields of earth or environmental science, physical geography or civil and environmental engineering. Broadly, hydrology is classified into two groups. The scientific hydrology is concerned mainly with the academic aspec...

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, requiring years to accomplish. The purpose of this webinar is to provide an overview of recent trends in dam decommissioning in the United States with an emphasis on t...

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 reservoir stages versus Annual Exceedance Probability (AEP). Hydrologic hazard curves provide a full probability distribution for the flood hazard, covering the range of...

The webinar consist of two sessions. Session 1 will be an overview of Geophysical methods applicable to dams and levees, how theory behind the methodologies, and the strengths and limitations of each method. This session will also cover what additional investigations, such as drilling, are necessary to calibrate the geophysical data in order to provide a holistic evaluation of the subsurface conditions and how these conditions can affect dam a...