Mayfly

I can't species this because it is to hard to see the tergite maculation pattern but the genus is (Hexagenia sp)

Great! Thank you.

Definitely a Mayfly though :)

You might be able to figure out the species using some of this information on geography: http://www.npwrc.usgs.gov/resource/distr...

Maybe. It seems much smaller than others I see online.

Could it be a Mayfly? (aka shadfly)