[sprousegw]

I just had the same error and sure enough this fixed my problem as well. Thanks!

[sprousegw]

Hi Cameron, thank you for the suggestions. Due to our project scope we have very specific guidelines to follow that help determine things such as time step, momentum equations, etc. We have been running models for 2 months now with all the same settings and have never had any problems. Good news though! I found the issue. I input an excess precipitation hyetograph into RAS using a 15-minute time step, encompassing a total of 293 data points. The issue arose because I accidentally had a single of the time slots empty (i.e. instead of a zero value there was no value at all). This caused the back-end equations in RAS to fail and cut out my inflow hydrograph for the same time period in which it then started up normal again for the next time step. Simple solution, however, very annoying that RAS didn’t catch this and spit out some sort of runtime error.

[sprousegw]

Hi Cameron, thanks for the response. I’m running it with the diffusion wave solver. The time-step should be sufficiently low (30-seconds) as I have already run two other simulations without getting this error. It’s very curious to me because the other two simulations I ran had much more water in them caused by inflowing hydrographs with more volume of water and excess precipitation hyetographs also with a larger volume of water. Everything between the simulations is the exact same expect for the hydrograph and hyetograph. Why would I encounter this issue for one of the simulations and not the others, and why would that happen for the lowest flow event?

My thought is that simply something went wrong during the calculations (maybe the computer got interrupted somehow) and thus spit out that infinity error, but I’m not sure. Any further thoughts would be greatly appreciated!

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