Michael,
A good landscape architecture program teaches you enough basic grading and drainage to engineer a golf course. That should include doing drainage plans using the "rational method" to size drain pipes, which is typically good enough for small water sheds. However, most course designs also have an engineer to do a "Master Drainage Plan" if associated with housing or flood plain detention.
I get calls all the time from engineering firms asking if they can do my grading for me, but it is really so integral to the design process that I have to do those plans myself.