It actually amazes me, some times, that golf architects - past and present - are praised for producing golf courses that (surface) drain effectively.
To answer your question, Mr. Decker, I'm sure there's no coincidence that your golf course drains effectively because as he was devising playing strategies and playing interest, Mr. Ross was entirely - 110% - thinking about making sure to get water off playing areas, first and foremost. Any, and all golf architects worth their salt - past and present - ensure to get water off playing areas effectively first and foremost.
It's a matter of incorporating those slopes and contour needed to shed water effectively into attractive features that make for interesting golf that will make us - those of us practicing today, that is - a "Mr. Ross" reincarnate, as opposed to just some guy who built a golf course (that doesn't drain well).