This is just what we have, except substitute pond for river and we are on a slight slope.
Two of our three acres will be mown in Spring and in Autumn and we will borrow some sheep to graze it over winter. Then it's a question of wait and see.
The other acre I have grander plans for.
It will be close mown twice then areas will be scarified down to the soil and I will plant borage,poppies and various wildflower combinations in a packet.
I plan to mow in the autumn and sow some yellow rattle to reduce the grass a little.
The Apiary is near the pond where I have planted butterwort and where there are already lots of different willows.
2000 crocuses will go in later in the year to give bees early forage near the hives.
There is already a small orchard and I will add to that in time.
My garden is about quarter of a mile away and I already have masses of snowdrops, hellebores and sedums. The sedums will get The Chelsea Chop later this spring and I will root all the cuttings and transplant them into the field as far from the apiary as I can. I noticed some Balsam in one corner so I will leave that alone
Of course the answer is to take off the topsoil and start again but I'm not in a position to do that so I'll take it slowly.
Best of luck...it's not easy unless you get machinery in