| OCR Text |
Show Final Report Hydrologic Model Analysis of the Provo River Basin different. In interpreting these results, it is also important to keep in mind that PROSIM is 100 percent efficient, whereas real- world river operations are not. In other words, while PROSIM is capable of allocating every drop of water on the river, in actual practice there is significant waste or inefficiency in operating the system. Thus PROSIM's results may tend to be somewhat " best case" approximations. With this in mind, the most important conclusion reached from the simulation of the proposed demands scenario is that all of the Central Utah Project demands are met throughout the simulation period. The average annual " design" yield of 107,500 acre- feet per year is satisfied, with a minimum remaining storage of 46,100 acre- feet in Jordanelle. Additionally, minimum instream flow requirements of 25 cfs at Woodland, 125 cfs between Jordanelle and Deer Creek, and 100 cfs from Deer Creek to Olmsted are satisfied at all times. The 25 cfs, winter IFR from Olmsted to Utah Lake is also satisfied throughout the simulation. Reservoir storage levels, water supply yields, and minimum streamflow conditions could be lower in drier hydrological conditions than were observed in the 40- year study period. In particular, the historical drought period observed in the 1930s would be expected to effectively empty Jordanelle Reservoir. January 1998 Page 32 |
