lake near snoqualmie

I was out wandering around today,I was on hw18 then east bound on 90,I noticed a nice lake on the right,just as the on ramp ended! I went back later to check it out,all there is -is houses! what a bummer! does anyone know what lake this is? and if there is anyway to get in there without getting cited??I know there are some good lakes out there with no houses, I can understand maybe a few houses, but when they take over a lake,for example-lake sawyer, isnt that bad! all the run off of fertalizer and other toxins?? let me know what you think!! :MAD
sounds like Echo Lake your describing just E/SE of Hwy 18 & I-90.

As far as I know, its on private property.

Someone else correct me if I'm wrong on this?