This second module in the two-part series expands on the science explaining catastrophic dam failure and flood-wave prediction methods associated with these events. Through the use of rich illustrations and interactions, this module introduces the St. Venant equations for dynamic wave flow, and flood wave characteristics. It also explains the general dam failure modeling process along with advantages and limitations of dam failure models including model stability, accuracy, and sensitivity issues. Finally, it also provides an overview of the Teton River dam failure, one of the most famous hydrologic events in U.S. history. The two modules that comprise this series are designed to be taken consecutively and together provide a fundamental understanding of this complex hydrologic topic.
After completing this module you should be able to:
* Describe basic features of the dam failure modeling process
* Recognize terms within the St. Venant equation
* Describe flood wave characteristics
* Describe model stability, accuracy, and sensitivity issues
* Assess advantages and limitations of three dam failure models
* Describe issues surrounding input and output of hydraulic models, including input data and data sources, and use of modeling scenarios
* Compare features of hydraulic versus empirical models
* Describe key issues involved in the Teton River dam failure
hydrology, Saint-Venant, Saint-Venant Equations, St. Venant Equations, St Venant Equations, dam modeling, dam failure modeling, dambreak, dam failure, hydrograph, flood hydrograph, flood routing, flood wave routing, open channel, open channel flow, continuity equation, conservation of momentum equation, momentum equation, dynamic wave equation, full dynamic wave, quasi-steady dynamic wave, kinematic wave, diffuse wave, dynamic wave, gravity wave, flood wave, flood wave attenuation, downstream impacts, hydraulic modeling, model stability, model accuracy, model sensitivity, courant conditions, cross section, cross section modeling, river cross section, breach process, dam breach, NWS breach model, flow calculation, HEC-RAS, Simple Dam Break, cross section data, off channel storage, teton river dam, teton river dam failure, flood wave speed, piping, erosion, piping and erosion, breach development, flood magnitude, flood timing, Theta weighting factor, boundary and initial conditions
15 March 2016: Answers in two of the quiz questions were modified based on recent feedback from learners.
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