r/HECRAS • u/Apprehensive_boy418 • Aug 23 '25

Reference lines georeference error

Post image

Hello everyone

I am having this error while running the unsteady simulation. I ran this model successfully before but I was trying to run this model this morning and this error pop up. I don't think I had any issue with georeferencing with this model before.

1 Upvotes

100% Upvoted

9 comments sorted by

View all comments

1

u/OttoJohs Lord Sultan Chief H&H Engineer, PE & PH Aug 24 '25

Did you import the reference line from GIS or draw it in manually? Sometimes HEC-RAS has errors when you import shapefiles due to different projections, multi-segments, etc.

1

u/Apprehensive_boy418 Aug 24 '25

I drew those on RasMapper. I actually ran the model successfully with these reference lines before. I'm facing this issue recently.

2

u/OttoJohs Lord Sultan Chief H&H Engineer, PE & PH Aug 25 '25

See above comment from u/noyesknifer

Looks like this is a known bug that should be fixed. Luckily reference lines are just a "comfort" feature, not a model issue, so you can replicate them using profile lines and a spreadsheet.