bleachery dam can be made like this one in Denver

These three photos are of the whitewater park in Denver. The flow was below 200cfs that day and the features are still playable. Not great,but it shows what is possible at low flow.
Note the construction of the whitewater section. It is built into a low-head dam, heading upstream of the dam. The bank has been sculpted from a formerly ugly structure into a nice gathering area. All of this acts as a fish ladder too, allowing fish passage around the low head dam.
Think of New Milford bleachery dam looking like this. The pond height is maintained so things don't change upstream. The features are useable at low water. And, I was told that at medium flows there are three GREAT playwaves. At high spring flows there is one world-class playspot!

This is a mid-city location so there is lots of concrete. New Milford could have minimal concrete and be mostly rock, earth, and grass to reflect the natural beauty of the surrounding area.