I have planted a terrific garden for several years now. I usualy grow tomatoes, peppers, cucumbers, and a variety of other veggies. In addition I had a strawberrry patch that I decided to turn under this year. I also battle weeds each year.
This year just before planting, in late May (zone 5/6) I turned the strawberry patch and weeds under. Gave it about 3 days and planted my main veggies. I know it was soon but didnt think it woudl be a problem.

We had a lot of rain this year; practically every day in June and much of July. I also noticed that my garden was lower than the lawn that surrounds it. I used railroad ties to separate them. Still the garden flodded with each rain and the water didn't drain.
My tomatoes died first, then the peppers, string beans, swaush and eventually the cucumbers which I thought were thriving because they liked the rain and I planted them on slightly raised hills. Now they are gone too. All that is growing is my weeds!!! It is so heartbreaking, I have given up for this year.
My question is, what can I do for next year to make this garden a success? Was it the water, the soild PH, height of the garden vs the lawn? Should I move the garden completely or fill with something (topsoil?) to bring level up?
Thank you so much in advance.