I am not here to tell anyone what to do, but I think more info on your context would get better insights. "Very wet" is a relative term, and rainfall distribution is as important as annual totals. I live in a place where we have gotten close to 3m (115") of rain in the past year, at times 5"+/day, but 95%+ of that has been between October and May, when many plants are dormant.
It seems like it could immensely valuable for us to store as much winter water as high up on our steep property as possible with ponds, deeper soils, and to a smaller extent in tanks to supply us through the dry summer. Not only for drinking water and irrigation, but for fire risk mitigation and habitat improvements. Where I am, logging and the roads built for it that cause incised stream gullies, along with displacement of beavers, has greatly reduced the water holding capacity of what is now our land. So the earthworks we do will be types of restoration projects that happen to feed us and reduce our risk of catastrophic losses to wildfire.
Your context in the interior of Canada is likely very different than mine in northwestern California, but I encourage you to read the freely available "Keyline Plan" by P.A. Yeomans, as it explains this 70yr old design methodology that helps balance moisture in the landscape (sending water from saturated valleys to dry ridgelines, where it will migrate back to the valley naturally) while deepening living, aerobic soils that hold vast amounts of water before flooding. Like in my landscape, it does sound like given your concern about "too much water" that level sills and other passive backup overflows would be especially important for any earthworks that hold back water. Best of luck.