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  1. Jessica2424

    Modeling a Pump in HydroCAD

    Thank you. As soon as I get the green light to continue with my project, I am going to try this and see what happens. Thanks again!!!
  2. Jessica2424

    Modeling a Pump in HydroCAD

    I have already modeled my drainage basins and detention pond. Can you explain how to use the special outlet device to define a pump rating curve? I have the outlet modeled as a culvert with free discharge.
  3. Jessica2424

    Modeling a Pump in HydroCAD

    Is there anyway to model a pump in HydroCAD?
  4. Jessica2424

    Need HEC-HMS Assistance

    Thank you...
  5. Jessica2424

    Need HEC-HMS Assistance

    So for a 25 year storm, should I put 25%.... and for a 50yr, 50%????
  6. Jessica2424

    Need HEC-HMS Assistance

    How do you change from a 10yr storm to a 25yr storm in HEC-HMS? and 25yr. to 50yr. to 100yr. etc?
  7. Jessica2424

    Need HEC-RAS Help

    Francesca... I see what you are saying about modeling the junctions, about how you need to put the reach lengths in the junction editor versus the cross-section editor (of the last cross-section near the junction). My problem with that is that I have a culvert that connects one reach to the...
  8. Jessica2424

    Need HEC-RAS Help

    Francesca, I am still working on your comments.... thanks for the input once again. I am sure that I will have more questions to come.
  9. Jessica2424

    Need HEC-RAS Help

    TerryScan, I had the lake modeled as a storage area, but I didn't know exactly what values to use for the SA. I ended up taking the lake out. My watershed drains into Lake Pontchartrain. I am not really sure on how to model this situation.
  10. Jessica2424

    Need HEC-RAS Help

    Francesca, First of all...THANK YOU so much for helping me out!!! I looked at the Hydraulics Manual and it is much better than the user's manual. It wouldn't let me check or put in and input for boundary conditions at the downstream junctions. I added a normal depth at the upstream boundary...
  11. Jessica2424

    Need HEC-RAS Help

    It is actually mainly at my upstream part. I tried to enter the downstream slope in the reach boundary conditions and it says that I can't set the slope for junctions. I have junctions where my reaches combine and flow together downstream. I have everthing ultimately flowing into a lake (I...
  12. Jessica2424

    Need HEC-RAS Help

    Am I the only person who thinks that HEC-HMS and HEC-RAS are EXTREMELY frustrating. I am still having a huge prolblem with my water surface elevation that HEC-RAS is giving me. It is showing that my water surface elevation in my watershed is about 10ft. over roads and high railroads. This...
  13. Jessica2424

    Need HEC-RAS Help

    It is the exact Q input value that I had.
  14. Jessica2424

    Need HEC-RAS Help

    Where can I look at the cross-section report? I got all of my information from a surveyor. I work for an engineering firm and I am conducting a master drainage plan for a certain area.
  15. Jessica2424

    Need HEC-RAS Help

    OK. I put the flows in like you said. The water in my watershed is draining into a huge lake. The water elevation that the program gives me is about 5 ft over my roads and over my railroad tracks. This can't be right. Can someone give me an idea on how to model this lake and everything...
  16. Jessica2424

    Need HEC-RAS Help

    Are you positive...because when I input the flows as 181 and 251, my water surface elevation is about 5 ft. above where it should be. If I put the flos in as 181 and 70 then it gives me reasonable water surface elevations.
  17. Jessica2424

    Need HEC-RAS Help

    When entering steady flow data for the different reaches, should you enter the "total" flow or should you enter the flow that will contribute to that reach upstream? For example: If you have two reaches that are joined (one upstream (#100) and one downstream(#99)). (#100)=181.00 cfs...
  18. Jessica2424

    Need HEC-HMS Assistance

    Do you need to input both values of CN and IA when modeling a subbasin in HEC-HMS using the SCS Method? Considering the IA equation includes the CN number. S=(1000/CN)-10 IA= (S)x(0.2)
  19. Jessica2424

    Need HEC-HMS Assistance

    So, should I use 0.2 or (0.2)x(S)?
  20. Jessica2424

    Need HEC-HMS Assistance

    When putting in data for subbasins using the SCS Curve Number Method... what is initial loss (in.) or initial abstraction (in.)??? Is it the potential maximum retention (in.) otherwise known as "S" which is =(1000/CN)-10????

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