Designs in the real-world seem to not always and easily fall into nice round-even foot or meter increments. With legacy software, one would change the contour intervals, import certain ranges, delete contours or a polyline to achieve the desired result. That’s a lot of work.
Join me after the jump for a quick discussion.
What is a user-defined contour? What purpose does it have?
In your surface style -> display tab, you have the ability to turn on User Contours. Change your settings as you see fit.
Great. Wonderful. But, I want to display by Base Flood Elevation contour – how do I define it? In my case, the HWL is 598.5.
We know the Surface Style controls the Major and Minor intervals. The Surface Style does not appear to control what a user-defined contour’s definition is. It only controls the display.
The Surface Properties –> Analysis Tab –> Analysis Type –> User-defined contours will control what contour lines you want to display in plan. (Yes – you can specify multiple User-Defined Contour lines to display say a 2-year, 10-year, and 100-year elevation)
Very useful for basin/pond berm elevations that are sometimes at an intermidiate elevation and that also need to be shown on plan view.