ASDSO Conferences and Seminars

WinDAM Overtopping and Internal Erosion Software

When: Thursday, September 14, 8:30 am – 5:00 pm. (Coffee and registration/check-in from 8:00-8:30 am)

Description: Two primary causes of earthen embankment dam failure are overtopping and internal erosion.  For the purpose of evaluating dam safety for existing earthen embankment dams and proposed earthen embankment dams, WinDAM software estimates embankment erosion during an overtopping event or from internal erosion flow.  The resulting WinDAM hydrograph output includes the outflow resulting from possible breaching of the embankment.  This WinDAM output hydrograph can then be exported to other hydraulic software for estimating downstream flooding impacts. Earthen embankments with bare soil, vegetation, or rock riprap can be evaluated with WinDAM software.  The workshop is directed toward engineers with some background in hydraulics and or geotechnical engineering.

WinDAM is a single event model that routes a user-supplied hydrograph through a dam. The current software, WinDAM C 1.1, was developed through the cooperative efforts of the USDA-Natural Resources Conservation Service, the USDA-Agricultural Research Service, and Kansas State University.  The one-day workshop will provide an introduction to the research-based embankment erosion estimate and use of the software.  Users will learn what geotechnical material input parameters are needed and the available WinDAM output for different analyses.  Users will have the opportunity to run sample input files on student-provided computers.  

Workshop topics include:
•    WinDAM Capabilities
•    Overtopping and Internal Erosion Algorithms
•    NRCS Dam Overtopping Policy
•    WinDAM Software Interface
•    Geotechnical Material Inputs
•    WinDAM Surface Protection Inputs
•    Creating and entering Hydrographs into WinDAM

View the full workshop agenda.  This workshop will be of most benefit to regulators from federal and state agencies, engineering consultants, and engineers/technicians from large or multiple dam-owning organizations who work with hydrographs.

•    Darrel M. Temple, P.E., USDA-ARS (retired)
•    Ronald D. Tejral, Agricultural Engineer, USDA-ARS
•    Sherry L. Hunt, Ph.D., Research Leader, USDA-ARS
•    Stephen G. Durgin, P.E., National Design Engineer, USDA-NRCS
•    Karl Visser, Hydraulic Engineer, USDA-NRCS
•    Morris N. Lobrecht, USDA-NRCS (retired)
•    Mitchell Neilsen, Professor, KSU

Professional Development Hours: Up to 7.5 professional development hours are available for attending the full workshop. Attendees will receive a form on which to record contact hours for continuing education credits.

What to Bring: Laptop computer with admin rights, pen and paper for taking notes.
Registration Information: The registration fee for this one-day workshop is $300 per person. Please include this fee with your regular conference registration. The registration fee covers all course instruction and materials and beverage breaks throughout the day.

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