How to fix the voids on a floodplain map by using HEC_RAS model?

I'm working on flood mapping by using HEC-RAS Model 5.0.7. I have used vertex DEM with 12.5 m resolution for floodplain map preparation. But, I found many voids in it. How could I fix the voids...

25 January 2021 9,205 2 View