According to the Jefferson County Drainage District, parts of Beaumont Texas were inundated with over 40 inches of rain during the past few days! Most of it occurred in the last 24 hours!
How does this rain event compare to Hurricane Harvey? Nederland, Texas nearby exceeded Imelda's total by 20 inches in a 4 day period. The amount was 60.58 inches!
By the way, Beaumont averages 60 inches per year.