tidealmanac
No predictions loaded for 2020. This site serves NOAA predictions from its own store, and this period has not been fetched for Richmond (river locks) yet. Nothing is estimated or interpolated in its place. NOAA's own page for the station has the official table: tidesandcurrents.noaa.gov.

tidealmanac.site/us/va/richmond-river-locks-8638495/2020

Richmond (river locks), VA tide table 2020 (printable) · Tide Almanac