Lots of data here NOAA
. Huron and Michigan are the most affected. They are very near recorded historical low levels (since 1860). The rate of decline from 1999 - 2000 was alarming as is the average level since then.
Superior and St. Clair are slightly below normal, Erie and Ontario are on par.
The NOAA forecast is that water levels in most of the great lakes will rise next year by about 0.2 metres, +/- 0.2 meters.
source data is similar.