2 beers a mile minimum. That is if you are a moderate drinker.
2x226=452/9days= 50 beers a day per person......there is nothing moderate about that and its well beyond the definition of binge drinking.
Even for a 16 day trip that is 28 beers a day which 2.6 gallons a day of beer per person for 16 days straight. Are we really condoning that level of consumption during the summer on a whitewater multi-day trip? Lets assume those 28 beers are consumed evenly over an 18 hour period, here is the corresponding BAC average:
225 lb male: .20
200 lb male: .263
175 lb male: .345
225 lb female: .260
200 lb female: .330
175 lb female: .421
200 lb male, 452 beers over 16 days (384 hours) would mean a steady BAC of 0.267
And lets be honest, those aren't consumed consistently so most people who consume that amount are going to oscillate radically above and below that number (about 0.05 for every change of about 3 hours span).
even above .20 often means loss of motor function, loss of consciousness and blackouts. Getting above .40 can easily lead to such a depression of the CNS system that breathing and circulation are jeopardized. Those numbers don't take into account multiple days or weeks of drinking or the liquor and wine consumed later in the day that seems all to common.
There is nothing safe, healthy or moderate about condoning that level of alcohol consumption for 9-16 days straight. I don't know if its a minority or majority of us who drink that way but that level of substance abuse rightfully puts us on any agencies radar and it should leave us as a community concerned. According to the Arizona boating handbook agencies can prosecute for Operating Under the Influence (OUI)( 0.08 ) for any watercraft, not just motorized ones (not sure what law justifies that policy). And lest we forget, a kayaker died last year after alcohol consumption and BAC of 0.27 below Lava.
These numbers are frightening. I hope I don't live under a rock in my assumption that this level of abuse is rare.