After the recommendation of a faithful reader (thanks, faithful reader!), we went to Lake Valley Reservoir yesterday. I am now very sore from all the paddling.
It was indeed a lovely lake, and it had several islands.
And the interesting dam overspill/outlet is so easily approached, it's fun to walk along.
All-in-all, it was an enjoyable lake, with a few islands and some interesting shallows at the top end. I have to say, though, that Spaulding is still my favorite Nevada County lake, if only because Lake Valley Reservoir is over in Placer County!