im not sure of the depth??but u should have no problem getting thru the first tunnel ever,depending on water levels the second tunnel wouldnt be a problem either.i have used a 14 footer b4 thru there.as for species you can expect to catch...nothern,walleye,smallies,bigg bigg crappies and perch.when going thru the first tunnel,stay right a little rocky at the exit.if you stay right u shud be fine,when heading out from there try to stick closer to the shore line heading to the open water.there is a reef to watch for but we have never had any troubles.bring a whistle.... lotsa traffic thru the tunnels at times.hope this helped a little.good luck.ill probaly be haedn there on opening weekend.