I was looking at some websites about water status in the state and came acrossed this link below... It is absolutely awesome on the details that we REALLY want to know... ESPECIALLY RUSH! I know that they left out any of the radioactive chemicals that are probably in the lake (ha ha? J/K I hope), but I found it very interesting to read. I think that it is a little outdated... But very cool to see the first thing listed as use of Rush Lake is Windsurfing. Also, talks about historical depths, source of influx, etc. Pretty interesting... I felt I must share it if you haven't already seen it... Hope I did the URL thing right!?
http://waterquality.utah.gov/watersheds/lakes.htm
http://waterquality.utah.gov/watersheds/lakes/RUSHLAKE.pdf