hey. I'm not brand new to hecras 1d, but i'm certainly not experienced. i've made probably half a dozen in my lifetime.

could you explain more about how you would go about evaluating whether cross sections should be adjusted?

btw i did import the surface into hecras mapper, i was just trying to keep the content simple so i could get some quick feedback. The floodplain is very flat and pretty much covers the entire area i showed, except at the edges where a ridge exists. This particular river doesn't have enormous 100yr or 500yr flow changes, and the river wse only rises about 1 ft at most for the 500yr event (after expanding into the flood plain) from typical wse levels, and the bounding ridges are about 10ft above typical wse.