Note 019
Yet in modern times, the Tyber has sometimes damaged the city, and in the years 1530, 1557, 1598, the annals of Muratori record three mischievous and memorable inundations, (tom. xiv. p. 268, 429, tom. xv. p. 99, &c.)

Extra note by the Rev. H. H. Milman 1782 (Written), 1845 (Revised)

The level of the Tyber was at one time supposed to be considerably raised: recent investigations seem to be conclusive against this supposition. See a brief, but satisfactory statement of the question in Bunsen and Platner, Roms Beschreibung. vol. i. p. 29.

The History Of The Decline And Fall Of The Roman Empire —Fall In The East —Chapter 71