I am swe 3 at google, one below senior, base 140k (supposedly maxed, but I've heard other swe 3 making somewhat more), total comp excluding benefits 230k.
As for verification, I'll bet you lots of money at 10:1 odds that these are accurate within 10k (flux depends on stock price).
Even check glassdoor to verify: http://www.glassdoor.com/Salary/Google-Senior-Software-Engin...
146k base + 32k cash + 41k stock = $220k (everyone gets bonus and stock). And this averages data before the raise Google gave everyone.