The archives yielded this interesting article on the possibility of a mammoth C.R. flood. It was published in July 1969 following some heavy rains and flooding:
ACCORDING TO the corps of engineers, a mammoth flood 6 to 12 feet higher than the swollen waters of the 1961 flood could hit Cedar Rapids at any time.
The 1961 flood, a record, saw waters reach a 19.66-foot level at the public works
department stream gauge.
Waters licked the top of the arches of the First, Second and Third avenue bridges and caused large-scale inundation of low-lying unprotected areas. Some homes were flooded.
The potential flood 6 to 12 feet higher than the serious flood of ’61 would send waters raging over the Iwo Jima statue in front of city hall on May’s island, and would inundate points as high as the first floor of the Federal building on First street SE.
The June 13, 2008 crest was 31.1 feet.