Just how high was the Big Thompson Flood? And how often will a flood like that occur?

Recently, the family and I were taking in an afternoon in Boulder, CO. After taking in a lunch at the lovely Dushanbe Tea Room we took a stroll along Boulder Creek. Right by a retaining wall stands this object. This monument demarcates how high the waters rise for a flood of various magnitude. Zooming in … Continue reading Just how high was the Big Thompson Flood? And how often will a flood like that occur?