I've not before worked with LiDAR data or a project area this small and
flat; I've read the LiDAR Wiki pages without answering all my questions.
The LiDAR modules mentioned work with vector point data. My data sources
are Shapefiles of raster DEM data. I want to describe surface water flow
over a small, flat area (14.321 ha/35.168 ac; I can change the project
bounds if needed). The source cell size is 0.3048m (1 foot) with vertical
resolution 0.04m (0.13 foot). The LiDAR raster map displays as a solid color
(see attached map with a couple of roads and a culvert); the bare earth
contours, roads, and culvert map is also attached.
What modules are appropriate for these data to model flow paths to the
culvert inflow? Or, should I convert the raster or vector files to a
different type?
The LiDAR modules mentioned work with vector point data. My data sources
are Shapefiles of raster DEM data. I want to describe surface water flow
…
What modules are appropriate for these data to model flow paths to the
culvert inflow? Or, should I convert the raster or vector files to a
different type?
In this case it really doesn’t matter if it is from lidar or not. Anyway, you can a lot of useful information here (theory & GRASS commands):
Thanks, Vaclav. I've done hydrologic and flow modeling before on larger
areas with 10m DEM data. Regardless, I'll review those pages in addition to
reading the module pages.
