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1-- The abOv~igUreS for salvage by u~are based on an ear~ier study by the Bureau of Reclamation which may not represent the current position of the Department of the Interior. While the Department has not rejected the concept of "salvage by use", their current estimates of the amount of water available for depletion in the Upper Basin do not include salvage by use. '" Existinq, Authorized and Prospective Uses of Water in New Mexico Table I presents a summary of existing and authorized depletions, commitments of water previously made by the Interstate Stream Commission (ISC) and prospective uses of San Juan River water available to New Mexico. The depletion figures are listed under two columns, 'one headed ISC ang. the other USBR; further discussion of some of the items in these two columns may be helpful. The ISC column shows a future depletion of 226,000 acre- feet annually by the Navajo Indian Irrigation Project (NIIP), based on a Bureau of Reclamation report prepared for an all-sprinkler system of water delivery and 105,000 productive acres. Recently, the Bureau of Reclamation and the Bureau of Indian Affairs have agreed that the productive acreage of the project should be 110,630 acres. However, it is not likely that the total productive acreage 110,630 acres, which is also the maximum acreage authorized for the project, will be in production each and every year. Some land will likely not be in production each year due to crop rotation and land left fallow or idle for various reasons. The USBR column shows a depletion of 254,000 acre-feet for NIIP as recently negotiated by USBR and BIA. It is important to note that the authorizing legislation (P.L. 87-483,copy attached) provides for an average annual diversion - 5 -