Thank you for the insight.
We have a large stream in my home town that goes through phases of being deep and turbulent, to shallow and trickling, depending on rainfall and snow melt. It empties out into a tidal river, which influences its depths, too.
Every spring we have a canoe race. Some years, paddlers have to port the canoes in several places because its so low or because it's so high, they can't go under the bridges. It has high cliff banks in some parts of it, too.
On March 1 of this year, a man fled from police and jumped into the stream. He wasn't even being sought after, just saw the cops, panicked and jumped. They tried to save him but he refused the help.
We still haven't found him. By now, his body most likely made it the river and is far down it, possibly near where I live now, which is on the bay about 18 miles away.
Here is an article about their search efforts. It shows a picture of the stream and one of the bridges that cross over it that I was talking about. You can see the ice jam and how high it is. Sometimes, the water level is up to the bridge itself, other times, it's maybe a few inches deep. The location of this bridge is close to where it meets the river.
Weekend search for Bangor man who went into Kenduskeag Stream comes up empty