Gibraltar Dam
... that the Gibraltar Dam was built on the Santa Ynez River to impound 14,500 acre-feet (17,900 dam3) of water, but about half of the reservoir's capacity has been lost due to siltation?
... that the <b id="mwAWQ"><a href="./Gibraltar_Dam" id="mwAWU" rel="mw:WikiLink" title="Gibraltar Dam">Gibraltar Dam</a></b> was built on the <a href="./Santa_Ynez_River" id="mwAWY" rel="mw:WikiLink" title="Santa Ynez River">Santa Ynez River</a> to impound <span about="#mwt20" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"14500"},"2":{"wt":"acre feet"},"3":{"wt":"dam3"},"lk":{"wt":"out"}},"i":0}}]}' id="mwAWc" typeof="mw:Transclusion">14,500 acre-feet (17,900</span><span about="#mwt20" typeof="mw:Entity"> </span><a about="#mwt20" class="mw-redirect" href="./Cubic_decametre" rel="mw:WikiLink" title="Cubic decametre">dam<sup>3</sup></a><span about="#mwt20">)</span> of water, but about half of the reservoir's capacity has been lost due to <a href="./Siltation" id="mwAWg" rel="mw:WikiLink" title="Siltation">siltation</a>?