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I I I I I I I I I I I I I I I I I I I Table 3.3. Summary of Unused Baseline Depletion New Colorado II Total Mexico Private" 29.900 11,500 41,400 Jicarilla 8,410 8,410 Navajo Mise 4,500 4,500 NIIP 120,270 120,270 ALpll 11,930 43,580 55,510 Mise 130 130 Total 175,140 55,080 230,220 Since the Jicarilla Apache Nation would commit up to 6.570 acre. feet of water rights allocated to the JANNRWSP for use in the NGWSP for delivery 10 the Nation or to Gallup pursuant to lhe terms of a pOlcnlial contract between the Nation and Gallup. the depletion baseline for all model analyses was reduced by 6.570 acre-feel. h was reduced further by 290 acre-feet 10 account for up to 290 acre-feel per year of Ijcarilla Apache Nation unused historical use water in the baseline that would be committed to the NGWSP. Further, Navajo Reservoir evaporation changes as project demands change. so there will be some differences in this category. All other baseline depletions remain as indicated in Table 3.2 for all modeling. 3.2.2 NGWSP Representation in the Model In as much as 6.860 acre-feet of the depletion associated with the NGWSP is included in the depletion baseline as two distinct water supplies of Jicarilla Apache Nation water as discussed above. the net increase in depletion in the San Juan River basin is 29.033 acre-feel. This is about 3 % of the total baseline depiction or 13 % of the unused ponion of the baseline depletion. Given the projech.>d NGWSP demand and the present and projected future conditions for other projects in the basin, it appears that there is adequate water within the depletion baseline to accommodate the proposed NGWSP depletions for at least the next 20 years and probably as long as 50 years. so any resulting impacts will be postponed well into the fulure. However, to assure Ihal Ihe depletions resuhing from this project can be maintained for the life of the project. it must be demonMraled thaI this project can operate within the flow recommendations when considered simuhaneously with other projects in the depletion baseline. This was accomplished by modeling full NGWSP development in addilion to the baseline depiction. In as much as this configuration could not meet flow recommendations under the present assumplions and model configurations, 11,1,'0 additional approaches were laken. The first of these was to demonstrate that the Jicarilla Apache Nation ponion of the NGWSP depletions, 8,700 acre-feet, could be supplied from Jicarilla water in the baseline plus some new depletions, along with all olher baseline depletions. The second was to examine an alternative that would allow the project to go forward and assure that depletions in the basin would not exceed a level that would allow all the flow II These values are estimates based on acreage survey data provided by the slates from the 1990's. BIOLOGICAL ASSESSMENT NAVAJO GALLUP WATER SUPPLY PROJECT September 3. 2004 Page 16