beej67
Civil/Environmental
- May 13, 2009
- 1,976
A programmer friend and I have a pretty slick idea about how to write some software that automatically generates watershed boundaries off of raster data, then does the sub-delineations within the boundary for watershed characterization, then gives you peak event discharges for a study point based on Rational, NRCS, and USGS regression methods, through what would basically be a one-click interface. One click defines the watershed boundary, gives you weighted C, weighted CN, rational Q, NRCS peak Q, and USGS regression Q, if you have your starting watershed in the right raster format.
My question is whether someone's already done this, particularly the auto-watershed-boundary stuff.
I've seen a hydro package in AutoCAD LDD that was supposed to generate watershed boundaries off of a TIN, but it always came out like crap because of how it followed the triangles, and always had a lot of little islands and fudge all in the middle. It was basically worthless when I tried it. Does Civil3D have one that works?
I have very little experience with the ESRI softwares, and haven't seen their watershed tools yet. Do they have a package that can do this? I always suspected their watershed delineation tools would have same sorts of problems LDD did, because they're vector as well, but I don't really know for sure.
Does anyone else have something out like this?
Don't want to go reinventing the wheel.
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East -
My question is whether someone's already done this, particularly the auto-watershed-boundary stuff.
I've seen a hydro package in AutoCAD LDD that was supposed to generate watershed boundaries off of a TIN, but it always came out like crap because of how it followed the triangles, and always had a lot of little islands and fudge all in the middle. It was basically worthless when I tried it. Does Civil3D have one that works?
I have very little experience with the ESRI softwares, and haven't seen their watershed tools yet. Do they have a package that can do this? I always suspected their watershed delineation tools would have same sorts of problems LDD did, because they're vector as well, but I don't really know for sure.
Does anyone else have something out like this?
Don't want to go reinventing the wheel.
Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East -