Zone 4a/b. Fruit trees/shrubs for erosion control / slope stabilization?

Anyone have ideas or experience on using fruiting trees for erosion control/slope stabilization? I have a country lot bordering a river that has steep (15-20% grade) slopes that have erosion issues. Soil varies from sand/gravel in some areas to heavy clay in others. Slopes are west and south-west orientation and there is NO chance of irrigation.

So are there any fruit trees/shrubs that can be used for erosion control? Given climate, sunny location + lack of irrigation I am assuming hardy shrubs would probably be best but I would want something with deep roots for stabilization. Would Saskatoons/service berries work? Anything else?

Other than fruiting trees are there other non-fruiting species that would work? I am already planting willows by the water side (and the beavers are LOVING it!).