Join Date: Dec 2010
Location: NW Washington State
Gutters/down spouts. Then grade. However many inches of mud (before you grade it out) you should get at least double in footing. So, 6 inches of mud, then scrape it out, and bring in 12+ inches of footing.
If it turns muddy just because of high traffic, then a wood base will last quite some times, HOWEVER, if you have standing water for any length of time, go with a "non organic" material, like pebbles or sand. It will lost a lot longer, and won't decompose. Be sure to pick poop off of it so it doesn't get ground into the substrate