Laserfiche WebLink
<br /> <br />' The results provided by AWA were incorporated into the 1996 Wheeler model to <br />provide a forecast of the PMF based on the site-specific hydrometeorologic model. The <br />' basin parameters for the area tributary to the tailing pond interceptor canal were added <br />by Steffens. The result is asite-specific model that predicts the PMF fcr the tailing <br />' basin as well as the canal. <br />The elevation and size of the tailing pond continues to increase t~s additional <br />tailing is deposited in the impoundment. The elevation capacity curve for the <br />' impoundment based on a survey performed in the fall of 2000 is shown on Figure 4. <br />The surcharge storage volume available in the pond at the time of the surve~r was about <br />' 4,466 acre-feet. This surcharge storage amount varies somewhat on a seasonal basis, <br />and tends to increase slowly as the pond size increases. <br />As described in the AWA report, the most likely timing of the probable maximum <br />design storm would be for it to occur in the latter half of July or August. This timing <br />' corresponds to the period when the flow of Ute Creek and its tributaries is low. We <br />estimate that the combined flow of all of the tributaries above the tailing dam would be <br />' less than 20 cfs. Since the tributary base flow would be negligible in comparison to the <br />storm runoff and would be much less than the capacity of the bypass s~~stem, base <br />' flow was not included in the model runs. <br /> <br /> <br /> <br /> <br />1 <br /> <br />' 6 <br />