I read a really boring book by Iain Sinclair and he was obsessed with the Ouse Valley Park. Extremely so. It doesn't sound like you felt the same!
It was a very pleasant, if utterly mundane park. Worth a detour to picnic there if you're driving past on the A5, but not from the M1. There were some very pleasant, if unremarkable nature preserve, with bird-watching huts.
And ALMOST ALL of it was paved.