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<br />MWSI Project <br />Interruptible Supply Framework Report - DRAFT <br /> <br />August 21, 1995 <br /> <br />means. but the focus of this study is on direct arrangements, A detailed description of <br />water banks and how they work can be found in MacDonnell, et aI., 1994, <br /> <br />Voluntary Trmporar)' Tnnsfrr Arrangements <br /> <br />Wllu Rigbt Owner Uses Water <br />Most ofthr lime <br /> <br />Water Rigbl Dwuu <br />Dots Not UK Watu <br />Most or tbe TIme <br /> <br />Uncertainty With Respect To <br />Number of Times Excrcisrd <br />an~ I or Timing <br /> <br />Number of Times <br />Exccrciscd and Timing <br />Known in Adnncc <br /> <br /> <br />Qllasi- <br />Interruptible <br />Supply \ <br />Arrangements : <br />, <br />---------------------------- <br /> <br />Tru <br />Interruptible <br />Supply <br />Arrangements <br /> <br />Short Term <br />Transfers <br /> <br />PurcJrast/ <br />Leasdtlck <br />A,rcemcn' <br /> <br />Figure 1 <br />Relationships Between Various Temporary Transfer Arrangements <br /> <br />2.3 Sources of Water Supplies <br /> <br />From a purely economic standpoint, the value of interruptible supplies <br />arrangements lies in being able to temporarily allocate water from lower valued uses to <br />higher valued uses (in this case municipal treated water supplies). Potential sources of <br />existing lower valued water supplies for ISC arrangements could include agricultural, <br />industrial, and instream flows water rights within a geographic area encompassing both <br />the front range and west slope. In addition, potential supplies could include raw water <br />used for urban irrigation. For example, a municipality could have an interruptible <br />supply contract with the urban irrigation portion of a ditch supply, In the Northern <br />Front Range area, the potential supply of water from agricultural interests far surpasses <br />the amount of water available from other sources, Therefore for purposes of this <br />study, the initial focus is on temporary transfers of water from agriculture to municipal <br />use, <br /> <br />Hydrosphere Resource Consultants <br /> <br />7 <br />