Laserfiche WebLink
<br />~ <br /> <br />CoO <br /> <br />reasonably well, The actual distribution over the season differed from the predicted, with more <br />of the runoff coming earlier in the season than predicted. By the end of May, 80 percent of the <br />total season's runoff had occurred, compared to a predicted 40 percent. <br /> <br />c <br /> <br />Examination of the outflow records shows that releases totalled approximately 9900 acre-feet <br />between May 15 and July 26 when the reservoir stood virtually empty, Baseflow and storm <br />runoff capture during August resulted in an increase in reservoir storage content to <br />approximately 900 acre-feet by the end of August. <br /> <br />For the 1990 season, the maximum instantaneous peak inflow was reported by ditch company <br />personnel to be 203 cfs on May 25, the maximum release was 116 cfs on June 1, and the <br />maximum storage level was 6383 acre-feet on May 28 and 29, At the maximums, the reservoir <br />was approximately two-thirds full and releases were approximately 60 percent of the outlet <br />capacity. <br /> <br />As of mid-September, the minimal baseflows reaching the reservoir are being saved for <br />municipal use and the fall stock pond run. The stock pond run is made to fill ponds which serve <br />as the water supply for livestock over the winter. Approximately 400 acre-feet are needed for <br />the pond run, and about 100 acre-feet from surface water supplies should be adequate for the <br />winter municipal demands of the WM RWS. With a dead pool requirement of approximately 300 <br />acre-feet, a minimum of 800 to 900 acre-feet storage, depending on the magnitude of the transit <br />losses actually experienced, is needed to make the necessary deliveries, As of mid. <br />September, storage stands at approximately 1000 acre-feet, and inflows have not yet stopped <br />entirely, However, careful management of remaining supplies is essential if all demands are to <br />be met. <br /> <br />Lone Cone Ditch and Reservoir Company - 1990 Operations <br /> <br />Operations of the Cone system are typically fairly simple regardless of the water supply <br />conditions, The limited water supply conditions simplified operations even more than usual. <br />Records of the average daily inflows and outflows were obtained from the CWCB and <br />approximate storage levels at maximum and minimum points were obtained from discussions <br />with ditch company personnel. The inflow and outflow data obtained are tabulated in Table 2 <br />and displayed graphically on Figure 3, A verbal description of the operations are provided <br />below. <br /> <br />Prior to May 30 all inflows were stored, producing a storage content in Cone Reservoir of <br />approximately 800 acre-feet. Average daily inflows of 10 to 15 cfs over May were typical with an <br />instantaneous peak of approximately 30 cfs at the end of May reported by ditch company <br />personnel, The reservoir outlet was opened on May 30 with a peak outflow of approximately 38 <br />cfs, Releases continued at a generally declining rate, due to the dropping reservoir water <br />surface level, until June 16 when the outlet was closed, The outflow at that time was 30 cfs and <br />the storage content of the reservoir was approximately 50 acre-feet. At the maximums, the <br />reservoir was approximately half full and releases were approximately 80 percent of the outlet <br />capacity . <br />