No predictions loaded for 2070. This site serves NOAA predictions from its own store, and this period has not been fetched for Rio Vista 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/ca/rio-vista-9415316/2070
Rio Vista, CA tide table 2070 (printable) · Tide Almanac