most streams have a trace of glacial gold,that far south even, but it will be flour gold and it will be SPOTTY,and what i mean by that is ,the gold that is there is a (set) amount ,no source to replenish it,so it will collect in certian spots ,but will not be despursed through out the creek gravels,so a stream in a glacial drianage area will appear to be barren,when in fact it is not,the same rules apply to glacial areas with regards to gold deposition , only you will not have a (trail) to follow,as in out west or in the south,where you can test an find follow the gold to good areas, the gold will only be in good areas, large cobble/boulders, in pa i have chased many streams here for glacial gold and this is what i have come to understand, i've tested streams, and nothing not even trace amounts that you can see,but being persistent, telling myself (i know its here),eventualy i did find it, it only moves in extreme water events, but will collect in the same areas as out west, watch for large well rounded rocks,but seemingly piled up like a dozer pushed them,and ones with a mixture of colors to the rocks,this will be glacial till,and when exploring those boulders ,watch for strat color changes , you will see then where the recent stuff has deposited on top of the old glacial stuff, also when these streams were carrying glacial run off,they were much bigger, so with that in mind look to the benches,the current stream may seem barren ,but where it was 12000 yrs ago it may not have been..