Garden Water Drainage Issues

[SuntannedSwede]

I really wasn't sure which subtopic this fit in to, so I'll put it here:


My garden is situated in a bit of a low spot in my backyard, so water tends to collect in a puddle on the far side. This is bad enough on its own, but my soil is very heavy and holds on to moisture quite well (lots of clay and peat). This last summer was so wet, a quarter of the bed on that far side was completely waterlogged and I lost all of the plants there. I would take a few pictures but there's so much snow at the moment, it would be hard to show how the yard slopes into the bed.

Would building up the sides of the bed with some boards and waterproof material help at all? Or am I stuck buying a water pump and hoping for the best?