Laserfiche WebLink
<br />llD2273 <br /> <br />Fontenelle Reservoir Drawdown~ cont. <br /> <br />within the darn. <br /> <br />"Instrument readings show that seepage pressure within <br /> <br />Fontenelle Dam has considerably lessened with the reservoir drawdown.1I Barrett <br /> <br />sa id. <br /> <br />"We are confident. now that the dam can hold the reduced amount of <br /> <br />......ater .....ithout t'"isk." <br /> <br />Currently, the reservoir contains orlly 32,900 acre-feet of water out <br /> <br />of a capacity of 345,400 acre-feet when full at elevation 6J506. <br /> <br />now about 35 feet deep at the dam. <br /> <br />Geologists and engineers from the Bureau of Reclamation have carefully <br /> <br />I t is <br /> <br />monitored seepage through the dam since abnormal amounts were detected in <br /> <br />1982. <br /> <br />An extensive network of instruments were imbedded into the dam to <br /> <br />measure the seepage pressure. <br /> <br />It was one of these instruments, called a <br /> <br />piezometer) that indicated an unexplained rise in seepage in late April <br /> <br />and early May 1985, and which led to the order to lower the reservoir as <br /> <br />quickly as possible. <br /> <br />As of May 14, this particular piezometer reading had <br /> <br />returned to an acceptable range. <br /> <br />IF <br /> <br />1/ <br /> <br />II <br />