This year was bad for water for a lot of people.
My first question would be where are you trying to garden? Your climate and soil type are your starting point for growing anything.
Besides that, it sounds like you could have used some hugelkultur beds. Basically, you lay some woody stuff out in a row-pile, then cover it up with some pulled up weeds, leaf litter, and
compost, and voila, instant raised bed. The worms will happily till it for you so you never have to dig it for any reason, and the rotting wood holds water like that manure pile did (so little to no watering).
The diggy pests are tougher. I don't know what predators might catch them efficiently. Our cats seem to have cleaned out the voles we had, but only a few of the cats actually went after the voles that I know of. Others would rather just camp the bird feeder

. Putting up some owl boxes could work. We put up owl boxes here and practically got a flock, although it's really impossible to tell how much or what they may be hunting.
EDIT: Reading is good too

. I don't know squat about Oregon soil, but the climate is cool enough that you would probably want larger, taller, and sun oriented raised beds to extend the growing season.