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OGzon . A REPORT ON SALINITY OPERATIONS OF THE COLORADO RIVER UNDER MINUTE NO. 242 FOR THE PERIOD January 1, 1992 - December 31, 1992 This report presents the results of operations during the eigh- teenth calendar year from January 1, 1992 through December 31, 1992, under the agreement with Mexico, entitled, "Permanent and Definitive Solution to the International Problem of the Salinity of the Colorado River" incorporated in Minute 242 dated August 30, 1973, of the International Boundary and Water commission, United States and Mexico. The operations began on June 25, 1974, immedi- ately following approval of the Enabling Legislation, Public Law 93-320. This report is based upon the records of flows and salinities determined jointly by the United States and Mexican Sections of the International Boundary and Water Commission, the U.S. Bureau of ReClamation, and the U.S. Geological Survey. Locations and fea- tures referred to in this report are shown on the map, Exhibit 1. The records show that the United States operations were in compli- ance with the agreement in Minute No. 242. The Salinity Differential Minute No. 242 provides in Point 1 that: . "The United States shall adopt measures to assure that ... the approximately 1,677,545,000 cubic meters (1,360,000 acre-feet) delivered to Mexico upstream of Morelos Dam have an annual average salinity of no more than 115 ppm + 30 ppm U.S. count (121 ppm + 30 ppm Mexican count) over the annual average salinity of Colorado River waters which arrive at Imperial Dam ..." The records show that during calendar year 1992: 1) Scheduled deliveries of water of the Colorado River in the quantity of 1,850,234,000 cubic meters (1,500,000 acre-feet) were made to Mexico in 1992 in accordance with Article 10 of the 1944 Treaty consisting of 1,692,865,000 cubic meters (1,372,419 acre-feet) in the river bed above Morelos Dam, 300,000 cubic meters (243 acre-feet) of emergency deliveries to the City of Tijuana, and 157,069,000 cubic meters (127,338 acre-feet) across the land boundary near San Luis, Arizona and in the limitrophe section of the river below Morelos Dam. Other waters arriving at the amounted to 99,581,000 cubic consisting mainly of regulatory Mexican meters waste. points (80,732 of diversion acre-feet), .