During the period between May 1965 and September 1967, an extensive tidal current survey was made in Block Island Sound, Fisher Island Sound, Long Island Sound, and their major tributaries. The study was carried out by the Coast and Geodetic Survey, now known as the National Ocean Survey. The report includes tables listing the findings in detail, graphs, and maps of the areas with the 163 selected sites specified. The investigative methodology is discussed, and the equipment for data gathering is described.

Public Domain