Croton Dam Cross Section Engineering cross-section drawing of the Old Croton Dam showing its masonry gravity construction. The dam was 50 feet high and 270 feet long, creating a 400-acre reservoir that supplied all of New York City with clean water beginning in 1842. Date: c.1842 Location: Croton-on-Hudson, NY Type: diagram Subjects: Croton Dam, dam construction, masonry, gravity dam Source: NY…