In addition to direct damages, floods have caused unintended release and dispersal of contaminated soils and sediments from contaminated sites (Horney et al., 2018 Su et al., 2008). During the 2018 water year (October 1st, 2017 to September 30th, 2018), floods caused 84 deaths and one billion USD in damages to buildings, infrastructure, and croplands in the United States (National Weather Service, 2018). Change in surface sediment and arsenic at the end of 48-h flood simulation ranged from a net loss of 13.5 cm to a net gain of 11.6 cm, and 16.2 to 2.9 mg/kg, respectively, per model segment, which demonstrates the capability of the coupled model for simulating sediment and contaminant transport in flood.įloods are one of the most common natural disasters, causing significant loss of life and property in the United States. We ran the coupled models for a 100-year flood event to calculate flood-induced transport of sediment-associated arsenic in Woodbridge Creek, NJ. Our test results showed the External Coupler successfully linked HEC-RAS and WASP and addressed technical challenges in aggregating flow data and conserving mass during the flood event. Accurate data transfer from a hydrodynamic model to a water quality model is critical. To model these processes during flooding events, we developed an External Coupler in Python to link the Hydrologic Engineering Center-River Analysis System (HEC-RAS) 2D hydrodynamic model to the Water Quality Analysis Simulation Program (WASP). * Purchase of this course allows you access to the presentation(s) for 6 months from the order date.Increased intensity and frequency of floods raise concerns about the release and transport of contaminated soil and sediment to and from rivers and streams. * Each state and certification agency have different requirements it is your responsibility to know what they are. For group pricing information, contact us at Presentations are scheduled for approximately one hour with a 15-20 minute question and answer session to follow. Get the whole team trained! We offer additional savings if you register as a group.
Williams’ review of submitted models, his discussions with experienced users, his blogs on hydraulic and culvert modeling topics, and his HEC-RAS Steady and Unsteady course lecture notes. Part II will detail how some of the input parameters should be refined, where within the 1-D model they should be placed, and a step-by-step creation of an HEC-RAS culvert model with a real culvert.Ĭourse material will be based upon Dr. Part I will discuss common 1-D geometric misrepresentations, the proper placement of cross sections within an HEC-RAS model, and initial coefficients to use to properly simulate the hydraulic effects of a culvert. Programming Note: Since most HEC-RAS models are still performed in 1-D, this course will concentrate on only 1-D culvert applications. Williams (who has taught HEC-RAS and bridge and culvert hydraulics to the Federal Highway Administration as well as state and local departments of transportation) presents examples of common geometric mistakes and misunderstandings of culvert parameters using HEC-RAS that could have potentially significant effects on a culvert project’s hydraulic results. Join Forester University for this live, educational, two-part webinar as prolific speaker Dr.
The most common hydraulic structures modeled are related to culvert modeling. HEC-RAS is a rather complicated 1-D and 2-D hydraulics program that can be easily put together but also easily-and unknowingly-misused. Williams, Ph.D., P.E., PH, CFM, CPESC, D.WRE