Let's start with the basics, but that will depend somewhat on where you plan to hunt and how much money you plan to spend. A well-equipped hunter will be prepared for the worst possible weather. If you're wading through shallow waters, hip waders are essential. Many hunters prefer chest waders so they can crouch in reeds or flooded cornfields and not worry about water coming over the top. Neoprene chest waders are very popular, especially in colder climates, because of the added insulation they provide.
Waterfowl have very good color vision, so hunters generally wear camouflaged clothing.
Avoid any unnatural colors, like blue, and avoid brightly labeled or colored hats. Simple woodland camouflage works well in many areas of western Oregon, while east-siders prefer other types. The outfit works well, allows for changing weather conditions, and is relatively cheap. In some conditions, you won't need any wet weather gear. Late-season hunters hunting dry areas at Summer Lake Wildlife Area simply lie down under some old burlap and call geese into a small set of nearby decoys.