Yes, the Derwent Water (lake) is in the Lakes District on the west side of England about 200 km northwest of the river by the same name (which is 50 km west of the North Sea on the eastern coast…
We did not make it as far north as the Derwent Water on a bus tour I took through the Lakes District with my mom on one trip there in the 1990s. We were staying in Harrogate and taking guided daily outings mostly around the North Moors and Yorkshire Dales,
I decided I hated bus tours on that trip but being with my little old lady mom and her retired friends it was really the only practical option. I bailed on the group trip a couple of the days so I could explore Harrogate on foot or take a bus to an adjacent town and poke around on my own.
Though on my last trip there 4 years ago I was only 3 years younger than my mom was on that rigidly organized bus tour. In 2017 I went on my own, hauling one of my folding kayaks along, rented a sweet cottage on a working Yorkshire farm (the cottage was part of a converted milking barn), rented a Citroen Cactus station wagon and took my time exploring Yorkshire at my leisure including hill walking, kayaking and canoeing.
Ah, the joy of driving a right hand drive 5 speed stick (shifting with the left hand, of course) on the “wrong” side of roads only about 1.5 lanes wide with traffic circles everywhere instead of intersections and cloverleafs. But the Citroen had black out back windows so when I was far afield for the day I could fold down the rear seats and crawl in the back to nap between my hikes and museum and historic site visits.
The paddling days were lovely and it felt like Ratty and Mole from Wind in the Willows would appear any moment poling their little skiff along the meandering rivers that wound through the bucolic landscapes.