Dobtful you'll see a lake under the Chain lift as that would involve alot of landscaping, which can't really be done.
If you see the ride the water trough is already there under the lift hill just needs themeing to look like a spring :)
Have a look next time you go
and I used 3d studio max 8 to model it.
The ride wouldnt be down long they could do it in the winter the rock themeing can be built off area and put in in stages its not that hard and not that expensive even if the water was not there heavey smoke down lift hill and then lights that look like shimmering water would work to they just dont want to spend the money simple as.