1976 Big Thompson River flood

1976 Big Thompson River flood
A memorial containing a list of people killed in the flood
CauseHeavy rains
Meteorological history
DurationJuly 31, 1976
Flood
Overall effects
Fatalities144
Injuries>250
Missing5
Damage<$150 million (2016 USD)
Areas affectedBig Thompson River, southeastern Colorado
Houses destroyed418

On July 31, 1976, heavy rainfall caused the Big Thompson River in Colorado to crest, causing at least 144 deaths, more than 250 injuries, and least 5 others to be missing. The crest was caused by a stalled thunderstorm complex that produced rainfall totals of 12–14 inches (300–360 mm) near Estes Park, Colorado, including 7.5 inches (190 mm) of rain falling in one hour. After cresting at 30 feet (9.1 m), widespread damage and flooding occurred along the river, with the damage totaling almost $150 million (2016 USD). The flood is considered one of the deadliest floods in the state's history.


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