Marsh Run
... that Marsh Run is only 1 mile (1.6 km) long, but flows through two counties?
... that <b id="mwBS8"><a href="./Marsh_Run" id="mwBTA" rel="mw:WikiLink" title="Marsh Run">Marsh Run</a></b> is only <span about="#mwt30" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"1"},"2":{"wt":"mi"}},"i":0}}]}' id="mwBTE" typeof="mw:Transclusion">1 mile (1.6</span><span about="#mwt30" typeof="mw:Entity"> </span><span about="#mwt30">km)</span> long, but flows through two counties?