So just out of curiosity then, what is officially deemed the ordinary high water mark? Is there a defined elevation for each parcel along the Missouri based on traditional release levels? Are there set levels at each flood monitoring point on the smaller rivers so you know where you can and can't go. Seems like it would be a nightmare to enforce. Based on what what said, if you are on grass, you are on private property and if you are on sand, mud and rocks, you are in the river? That is a fine line of interpretation. Most small rivers I know, you would at some point have to trespass to fish any substantial section of the river.