This isn't always the most accurate but this is where I check for waves:

http://www.nws.noaa.gov/om/marine/zo...akes/clemz.htm

This is where I check the satellite images for clarity:

https://coastwatch.glerl.noaa.gov/modis/region_map.html

Those two resources combined with checking wind speed and direction from regular weather apps usually give you a good idea. I always pay attention to the previous day as well. If there is a strong east wind the day before the west side of the lake is likely worse than the reports. As I said with those resources I'm 90% acurate on waves. Only once did I check everything, get to the launch and see all the boats coming back in due to conditions.