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. . The above table does not reflect all depletions in New Mexico. There are smaller depletions or depletions which were not expected to change from historic values that were not modeled but 'left in the gage'. Not specifically modeling these smaller depletions or depletions not expected to change does not mean that these depletions were not considered. Historic depletions not modeled are still reflected as a depletion in the historic gage records used in the development of the flow base on which modeled depletions were superimposed. The Bureau of Reclamation indicates that 20,000 af of current New Mexico depletions exist in addition the above list. This puts estimated current depletions at about 430,000 af. This is close to the 426,000 af of depletions estimated on the attached New Mexico tabulation. In modeling future depletions the following depletions where considered as part of the 'full development' scenario. Future Average Annual Modeled Demands in New Mexico Acre-feet Diversion Return Flow Tkp''''!m Jicarilla Apache Navajo Indian Irrigation Project Utah International Hogback Canal Extension Animas La Plata (NH portion) 37,200 188,000 35,000 10,000 34,000 68,000 37,200 120,000 35,000 10,000 34,000 Totals 304,200 68,000 236,200 (, Therefore, the total 'future development I New Mexico depletion approximates 665,900 af (including the 20,000 af of depletions estimated left in the gage). This value compares with the 669,000 af of depletions shown in the attached New Mexico tabulation. A second attachment we understand was prepared by the New Mexico Interstate Stream Commission indicates that total annual depletions available in New Mexico under the Colorado River Compact is 669,000 af. To obtain New Mexico's total entitlement under the Compact, one would have to add the New Mexico ahare of evaporation on upper Colorado River Basin reservoire, which is presently estimated at approximately 58,000 af. l"""'" We have also included the 121,000 af of Colorado depletions attributed to the Animas La Plata Project in the future development scenario. Available Storage Determination To obtain sn estimate of Navajo Reservoir water which would be required during the 1929-1974 period to satisfy all New Mexico consumptive demands contained in the model, all current and future consumptive demands described above were imposed in the modeling and the amount of Navajo operational storage was varied until those demands were fully satisfied during the study period. Other key assumptions include: (~ Leonard Rite Consulting Waler Engineers. Inc. - -_._,~ _r . ~. I ._ 'I _' ~ . -;- .- ,--I .1 , ", ~ ("', . ~.< l.- " ~ .~