Navigation?

We had a lovely day out today to this idyllic Tudor mansion in Warwickshire.

Charlcote Park house is not open on Wednesday or Thursday but the out buildings, including a brew house and carriage collection, and the gardens are. The Parterre adjoins the River Avon and the views are wonderful. I noted however that the chub, clearly visible in the crystal clear water, are battling against a current of at least 1 m/sec (2.1/4 mph). It occurred to me that really, this stretch of the Upper Avon is NOT really suitable for a navigation as desired by some.
Can you imagine a 65 ft narrowboat in this picture?
No, I thought not!

The gardens are delightful including a short woodland walk during which we saw young blackbirds drinking at a pond, a nuthatch feeding on a pine tree, jays and listened to a woodpecker hammering somewhere above us. We really enjoyed the latte, brownie and shortbread in the daily open restaurant too.