FP -

I love the picture - nothing like Blue skies - White Birch & White cedar all in one picture!!!!!!

I know the type of soil well - and while the soil might be wet - it is likely high in P & K due to the short growing seasons and water table (these nutrients do not leach out like Nitrogen does).

So.............

Your plot is prime for a clover planting. White clover especially.

Clover is shallow rooted - and will grow in very wet soil (not underwater though).

If flooding occurs annually (river floodplain) for more then 4-7 days standing water - it might be wise to look at annual plots of clover - and plant after the spring floods.

few plants can handle a week under water except some grasses - which are generally not preferred by deer.

Is the field under water part of the year?

FH