Question

Select the conditions that caused the 1976 Big Thompson River flood near Estes Park, Colorado.

a. Heavily developed banks along the river
b. Failed earthen dam upstream
c. Unusually severe thunderstorm
d. Steep slopes of the river canyon
e. Narrow canyon

Answer 1

The 1976 Big Thompson River flood near Estes Park, Colorado was caused by a failed earthen dam, an unusually severe thunderstorm, and a narrow canyon.

Step-by-step explanation:

The conditions that caused the 1976 Big Thompson River flood near Estes Park, Colorado were as follows: