I'd say 12 ft row spacing minimum and perhaps 15ft better. That would make a roughly 6-8ft raised bed. In soggy soil raised beds are a good idea.

thanks is that a good spacing for blackberries, blueberries and raspberries?

That's about how wide my berry plants have been. I guess if they were really thorny you might want narrower to reach the middle. But with pruning and training you can make anything in the 4-8ft range work.

yea I was thinking our triple crown blackberries were about 5' wide, wouldn't really want them much wider than that because they grew so tall. Raspberries I am thinking of keeping them around 5' as well for the thorns. I ordered some raspberry plants and some root stock, any suggestion on how far apart to plant my raspberries? I am thinking of spacing them maybe 6' so that I can fill in later.