Laserfiche WebLink
<br />August 19, 1999 <br /> <br />1544 <br /> <br />Modeling Approach to Evaluation and Analvsis of Storage Utilization <br /> <br />Pueblo Reservoir has the advantage of being able to store water delivered to it from upstream <br />sources as well as through exchange. The amount of water that would be stored by entities from <br />upstream sources would need to be determined by each potential participating entity. <br /> <br />Potential sources of inflows to the Pueblo Reservoir enlargement storage space include: <br />. Winter Water; <br />. Exchanged Water (e.g. CSU return flows exchanged to Pueblo Reservoir); <br />. Water rights transferred and exchanged (e.g. Colorado Canal water rights) or water <br />purchased and transferred (e.g. storage to regulate replacement water for well pumping); <br />. Transfer. and storage of water from upstream reservoirs. <br /> <br />The exchange potential into Pueblo Reservoir would be calculated on a daily basis using ArkEx <br />and compiled on a monthly basis for use in MODSIM to detenuine the additional potential for <br />storage of return flows by exchange in Pueblo Reservoir. <br /> <br />Potential beneficiaries of additional storage space in Pueblo Reservoir could include: <br />. Winter Water <br />. Colorado Springs Utilities <br />. Other FV A entities <br />. Pueblo Board of Water Works <br />. St. Charles Mesa <br />. Pueblo West Metropolitan District <br />. Public Service Company <br />. Storage to regulate replacement water for well pumping <br /> <br />The MODSIM network will be modified with an additional reservoir node in addition to the <br />existing Pueblo Reservoir node to separately account for storage in the enlarged portion, as well <br />as the addition of native Arkansas River inflows. <br /> <br />Turquoise Reservoir Enlargement <br /> <br />Sugar Loaf Dam which fonus Turquoise Reservoir is located on the Lake Fork of the Arkansas <br />River approximately 5 miles west of the town of Leadville. The location of the reservoir is <br />illustrated in Figure 1. The dam is an earthfill structure completed in 1968 which has a height of <br />135 ft above the streambed, an embankment length of 2,020 ft, and an existing storage capacity <br />of 129,398 ac-ft. In the SECWCDIArkansas Basin Future Water and Storage Needs Assessment <br />(GEl, 1998), GEl reviewed enlargement alternatives and concluded that a 5 ft increase in the <br />maximum pool elevation would provide an additional 10,000 ac-ft of storage and an Il-ft <br />increase would provide 20,000 ac-ft. <br /> <br />5 <br />