WSP09812 - Laserfiche WebLink

Home Browse Search

year 2000. For the year 2020, the depletions will increase to 3.9 MAFA and 10.7 MAFA, respectively. While flows are currently sufficient to provide full service navigation for 49 of the 82 years of existing records, flows by the year 2020 would be sufficient to provide full service navigation for only 16 out of the 82 years. Additional informa- tion on projected in-basin depletion effects on navigation and other functions is contained later in this section under "Effects of Diversion." The High Plains Study Council Resolution Number 6 states that "Only those amounts of water estimated to be surplus to these uses and future needs will be recognized as being potentially available for exportation to the High Plains-Ogallala Aquifer Region." Strict compliance with this resolution would result in no study of water transfer from Fort Randall Dam. Neglect of the Missouri River as a potential source of water, however, does not appear to be consistent with the intent of Congress in directing the Corps to investigate the importation of water from adjacent areas. To comply with the intent of Congress, the decision was made to investigate various rates of Missouri River water transfer and to fully disclose the impacts of such transfers. The water diversion rates studied for this route do not in any way imply that the impacts associated with such transfers would be acceptable. Judgments of that type can be made only by the affected parties after detailed studies. Source Reservoirs Lake Francis Case is used as the source reservoir for this diver- sion. In conjunction with the remainder of storage in the main stem reservoir system, the 4.6 MAF of storage in Lake Francis Case is sufficient to provide water for High Plains diversion without building a new source reservoir. A17