People forget that last year the river was at near record levels of flooding all summer long. Look at this view of the river from July 14, 2021. The island was inundated most of the season and into mid-November. The animals stayed away in droves. It just wasn't safe. Camera crews filmed the spectacle.
I'm glad I keep these sketches because they record the unpredictable fluctuations of the river level. The low water now seems "normal" and the birds are taking advantage of the small pools, the tasty algal slime on the spillway, and the many bare rocks on which to perch. A little family of mallards is calling a stranded plank on top of the spillway its designated safe-place for the babies to nap and preen.
I've enjoyed the low water because I like to draw the birds, as you can see below. It's a lovely spot to forget your cares for a little while regardless how much water flows under the bridge.