Beej - I DL'd and ran the model "steady state". Am I missing something?
Here is the simulation data.

Plan: 'Lower Flat Creek Existing Conditions' (LowerFlatCrk.p01)
Simulation started at: 01Nov2016 10:53:34 AM
Using 64 Bit Computation Engines

Writing Geometry
Computing Bank Lines
Bank lines generated in 483 ms
Computing River Edge Lines
River Edge Lines generated in 36 ms
Computing XS Interpolation Surfaces
XS Interpolation Surfaces generated in 419 ms
Completed Writing Geometry

Writing Event Conditions
Event Conditions Complete

Steady Flow Simulation HEC-RAS 5.0.1 April 2016

Finished Steady Flow Simulation


Computations Summary

Computation Task Time(hh:mm:ss)
Completing Geometry 1
Steady Flow Computations(64) 4
Complete Process 5

Thanks.

On my machine, the calculation stops at this step:

Computing XS Interpolation Surfaces

It just sits there for minutes and I have to cancel the simulation. If it runs fine for you, something must be screwy on my end. What version of HEC-RAS are you running? I get the same message on 4.10 and on a brand new, completely fresh install of 5.0.3.

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

steady.exe crashes on my end

Are both of you 32bit or 64bit? I noticed that my run said "using 64bit computation engines". Just a thought and not sure if that would have a hill o beans to do with it.

Windows 7 enterprise, 16 GB, 64 bit

Thanks cvg. Good to know I'm not the only one.

I'm on Win 10 64 bit.

I might scrape both installs off my machine and reinstall 5.0.3 tomorrow to see if that works.

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

I just ran a ~50 mile model of the Colorado River a few weeks ago, no problem. it seems it might be this data file is the problem

Someone, not sure who, posted this:

Quote:

It seems LFC 1 river has some issues. the model will run if you delete it. take a closer look at this river/reach.

..then deleted their comment.

Well, this works, so if whoever it is wants to own up to it, they can earn a pink star.

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

Beej67, I am running into the same isssue. I am working on a small model, and cannot move further. Some of the XS were computed, but the rest of them are not. Very weird. What exactly was the solution/approach you took?

The mystery poster identified the reach with the bad data in it, so I nuked that reach and everything works fine. My suggestion would be to save your project down to a temporary file, delete segments until it runs, and make a note of which segments you deleted to make it run. Then do what you can to clean up the problem areas.

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

Thank you beej67, I have followed up on your advice, and the newly created model works just fine. Appreciate your response.