This has probably been discussed in the past, so I apologize in advance if it has.
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LoginWe know the money was found at a height of about 10 feet above the water level. In that area, 16 feet above is considered flood level.
An article in the Albany Democrat-Herald from May 26th, 1972 reported that the Lower Columbia was already at flood stage (16 foot) and that "many beaches were inundated". This means that by the end of May, the money would be under 6 feet of water.
An article in the May 31, 1972 edition of the Corvallis Gazette-Times states "The National Weather Service Agency said the river level...Tuesday morning... was at 18.3 feet at Vancouver, Wash."
According to an article in the Stateman-Journal dated June 1 states that officials expected the water to crest nearly 21 feet by June 2. So at the beginning of June the money was already 10 or 11 feet underwater.
An article from June 4, 1972 from the Statesmen-Journal says that "the river is expected to remain at (20 to 22 feet) for
several weeks"
At it's highest crest on June 12, 1972 the Columbia peaked at 21.5 feet. That means that on June 12, 1972 the cash was still nearly 11 feet underwater, and by all indications the Tena Bar location would remain under feet of water into July.
My point is that the money would be under FEET of water well in advance of the June crest and remain under feet of water into Jul;y.. That makes the likelihood of Cooper sloshing around in ankle deep water digging up money is low. He would be swimming in the Columbia, not walking around in galoshes.
Now, I'm not pretending to be an expert on this, and my numbers may be off. I encourage others to fact-check me. Still, the numbers and the article stand.