Thanks to all for the replies!
The area where we are thinking of building the pond is in La Center, WA. Plenty of people in the area have ponds, so I should be able to get some info. The site we are looking at is on gently sloping ground at the bottom of the property, so the drainage field is pretty good, and we are looking at a pretty small project- 1/4 to 1/2 acre. We live in San Diego, CA right now- ponds are a real rarity here! We won't be beginning contruction for 4-5 years, so we have plenty of time to look into things.
