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allow a constant year round diversion not to exceed a volumetric limit (i.e. 4,500 of and 800 of for <br />the Alamosa National Wildlife Refuge and the Blanca Wildlife Habitat Area, respectively). <br />Additional information concerning the Closed Basin Project is provided in a memorandum <br />documenting discussions with the BuRec Closed Basin Division. <br />Costilla Creek Diversions <br />Both Colorado and New Mexico ditches diverting from the Costilla River are represented in the <br />Rio Grande surface water model (Table 2). Administration of water rights on Costilla Creek is <br />defined by the Amended Costilla Creek Compact, which sets forth allocations of water to the <br />different ditches at different flow rates in the river. This information was used to define a series <br />of 49 model water rights that reflect the appropriate priorities and amounts available to each ditch <br />(Table 3) over a specific range of river flows. <br /> Table 2 <br /> Costilla River Ditches Represente d in SurFace Water Model <br />ID Name ID Name <br />240506 CO_Acequia_Madre 90_ ACEQM NM_ Acequia_Madre <br />240507 CO_Acequicita 90 _CERTO NM_ Cerrito <br />240521 CO_Cerro 90 _CERRO NM_ Cerro <br />240524 CO Chalifu 90 PATPEN NM PDA&P <br />240549 CO Garcia 90 PM NM PDM <br />240593 CO_Trujillo 90_ METRJ NM_ T&A <br /> 90_ AMALIA AMALIA <br />Table 3 <br />Water Rights Structure of Costilla River <br /> Name Amount Priority Name Amount Priority <br />1 1 NM_Acequia Madre_ 1 2.46 100 26 8 NM_Cerro_8 2.01 800 <br />2 1 CO_ Acequia Madre _1 0.21 100 27 8 NM_PDA&P_1 0.25 800 <br />3 1 NM_Cerro_1 0.88 100 28 8 NM_PDM_1 0.25 800 <br />4 1 CO_Cerro_1 1.45 100 29 8 NM_T&A_1 0.25 800 <br />5 2 NM_Acequia Madre_ 2 2.47 200 30 8 CO_Acequicita_1 1.00 800 <br />6 2 CO_Acequia Madre_ 2 0.21 200 31 8 CO_Cerro_8 1.23 800 <br />7 2 NM_Cerro_2 0.88 200 32 9 NM_Cerro_9 3.02 900 <br />8 2 CO_Cerro_2 1.44 200 33 9 NM_T&A_2 0.15 900 <br />9 3 NM_Acequia Madre_ 3 2.46 300 34 9 CO_Chalifu_1 0.09 900 <br />10 3 CO_Acequia Madre_ 3 0.21 300 35 9 CO_Cerro_9 1.74 1000 <br />11 3 NM_Cerro_3 0.88 300 36 10 CO_Chalifu_2 4.91 1000 <br />12 3 CO_Cerro_3 1.45 300 37 10 CO_Trujillo_1 0.09 1000 <br />13 4 NM_Acequia Madre_ 4 2.46 400 38 11 NM_Cerrito_2 3.43 1100 <br />14 4 CO_Acequia Madre_ 4 0.21 400 39 11 NM_PDA&P_2 0.65 1100 <br />15 4 NM_Cerro_4 0.89 400 40 11 CO_Trujillo_2 0.91 1100 <br />16 4 CO_Cerro_4 1.44 400 41 11 NM_Cerro_10 0.01 1100 <br />17 5 NM_Acequia Madre_ 5 2.46 500 42 12 NM_PDA&P_3 1.75 1200 <br />18 5 CO_Acequia Madre_ 5 0.21 500 43 12 NM_PDM_2 2.76 1200 <br />C:Acdss\Task6-7.doc Prepare Diversion Files November 04, 1999 -Page 4 of 6 <br />