Q.Pond Dams
I have a couple pond dams that thinks about planting some native flowers. Is there flowers out there that would work in a clay/top soil mix?

Certified GKH Gardening Expert
You are in hardiness zone 5, so these articles should help:
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-5/zone-5-gardening.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-5/butterfly-gardening-in-zone-5.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-5/planting-wildflowers-in-zone-5.htm
https://www.gardeningknowhow.com/special/clay-soil-full-sun-plants.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/how-to-improve-clay-soil.htm