 The failure of Teton Dam, in June 5, 1976, produced a peak discharge at the damsite of 2,300,000 cfs.
 About 100 miles downstream, the peak discharge had attenuated to 50,000 cfs, or about 2% of the original value.
Failure of Teton Dam, on the Teton River, Idaho, June 5, 1976.
REFERENCE:
Ponce, V. M., A. Tahershamsi, and A. V. Shetty. 2003.
Dambreach flood wave propagation using dimensionless
parameters. ASCE Journal of Hydraulic Engineering, Vol. 129, No. 10, October, 777782.
