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~ Final Draft - Preferred Storage Options Plan Southeastern Colorado Water Conservancy District June 8, 2000 . Participants in Re-operation Scenario B will be required to pay for their annual allocations of Project water consistent with current contracts. The cost for USBR administrative, legal, permitting, and NEPA compliance activities required to implement re-operation is conservatively estimated to be $7.3 million. This is equivalent to $150 per af of re-operation storage (48,500 at). 3.3.2 Other Non-Structural Measures In addition to re-operation of the Fry-Ark Project, the study team also investigated two other non-structural water management measures for possible implementation. These options include interruptible supply (IS) agreements and creation of a water bank. As discussed in Appendix B, these concepts could be applied to facilitate temporary transfer of agricultural water to municipal uses. Both measures have been implemented in other locations with varying degrees of success. Their implementation in the Arkansas Basin, as part of the PSOP (or separately), will depend on the ability of municipal and agricultural water users to overcome the obstacles identified in Appendix B and reach agreement on key issues relative to water lease and/or rental prices, implementation entity, infrastructure for water conveyance, and similar issues. Significant engineering "n ~ ]_M] stud]."s ,\,,11 '- n~~ ,~ 1 tl"\ roPconl""" ",..TO..- ................+'''''... ;..........""s ........... .........++...._ ~..1-.~....t. ....~..t...... d..a ~cba. ~ ..... ..U Ot:: u;;::;;;Cc::C LV t....~vJ.".... nu...",,! UUH.;)J.lvl l.3.:JU\.. JtV UlaU.lvl VVUl\,,1J Ui un;;: two options would be implemented. Water users in the Lower Basin have started a dialogue about how to implement temporary water transfers so that irrigators can take advantage of their valuable water rights without causing the potential economic impacts when permanent transfers of water are made. While the study team and District staff recognize that more discussion and evaluation will be needed, we recommend that the PSOP include provision for incorporating water banking and IS agreements in the final plan. To this end, a provisional amount of storage for these purposes has been included in the District Water Management Storage (Section 2.4). Further study and specific discussions between agricultural and municipal water entities interested in these measures are recommended for the near term. 3.3.3 Enlargement of Storage at Existing Reservoirs 3.3.3.1 Project Reservoirs Enlargement of Pueblo Dam and Reservoir and Sugarloaf DamfTurquoise Lake are judged to be technically feasible based on investigations by the USBR (1999) and Black and Veatch (B&V, 2000). The USBR studied raising Pueblo Dam and their findings J \PROJECTS\9906I\Repom\Prcferred SOP Final wpd 3-9 m GEl Consultants, Inc.