i went to the upper lake on my rounds today to check the ice.
there was no one out on the lake.
i saw where someone had gone out about 20 feet and drilled a couple holes
i went out another 20 feet and drilled a hole ice was 3 1/2 inches
went out 30 more feet and drilled ice was 3 3/4
out another 20 or so and got 4inches
that was near the handycap fishing area
i didnt go any further and wasnt going to chance it by myself
but the ice looked very good quality black ice
be safe and only use this info as an indicator
please be safe