Hog Island
... that 80 acres (32 ha) of Hog Island were farmland in 1923, but only 15 acres (6 ha) were above water in 1974?
... that 80 acres (32<span id="mwpw" typeof="mw:Entity"> </span>ha) of <b id="mwqA"><a href="./Hog_Island_(San_Joaquin_County)" id="mwqQ" rel="mw:WikiLink" title="Hog Island (San Joaquin County)">Hog Island</a></b> were farmland in 1923, but only 15 acres (6<span id="mwqg" typeof="mw:Entity"> </span>ha) were above water in 1974?