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  1. djstrick110

    HEC-RAS Modeling: Bypass Culvert as Lateral Structure

    I'm using HEC-RAS to model a floodplain in which a drainage ditch splits at a point, then recombines some distance downstream. I've attached a schematic of the system showing what I'm calling the Main Reach and the Bypass Reach. After the split (XSEC 11+12), the Main Reach routes through a...
  2. djstrick110

    HEC-HMS Deletes Data Table

    Crystal: Yes, I was using the paired data manager in version 3.4. Froude: That's exactly what I ended up doing - just building a new model since it's fairly small. That did the trick, so thank you! I'm still curious as to why a copied model would just delete the paired data set, and not allow...
  3. djstrick110

    HEC-HMS Deletes Data Table

    I'm working on a very simple HEC-HMS model consisting of one drainage area, and one detention pond with a culvert as the primary outlet, and the dam top as the auxillary outlet. This model works fine. The problem comes when I copied this model to test a condition when the primary outlet...
  4. djstrick110

    Need some regulatory guidance

    Thanks to you both! I understand that there is no floodway associated with Zone A, and yes, if a LOMR were submitted for a Zone A stream it would become Zone AE with established BFEs, floodway, etc. Froude, what you mentioned about my client being interested in floodplain approximations is...
  5. djstrick110

    Need some regulatory guidance

    Hello, all. One of my clients, a local municipality, is in the process of developing a new floodplain management ordinance. They have requested that we provide them with some recommendations as to best practices within Zone A riverine floodplains. They want to include in the ordinance a rule...
  6. djstrick110

    HEC-RAS: Modeling a Weir and Detention Area

    Hi, all. To summarize my situation and goal, I am trying to design a solution to lower the current water surface elevations along an existing rention pond/channel. Due to various constraints on the property, the most viable option I have right now is extending the existing pond and...

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