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., 1>......- J.':1iV tower blowdown to the lake and further stated that the decision was made "in order to avoid even minimal adverse effects and, more importantly, in order to avoid setting a prece- dent for return of water to the Colorado Riv- er and Lake Powell. . . ." Havasu Water Company , Havasu Water Company, a public utility serving an area on the California side of Lake Ha vasu, has drilled several wells over the last few years in an attempt to obtain a water supply for residential development. Howev- er, developent was not permitted by the State Department of Public Health and the Coun- ty of San Bernardino because the water sup- ply, with a total dissolved solids (TDS) of about 1,300 ppm, was in excess of the 1,000 ppm maximum permissible upper limit. The Company proposed a plan which would mix water from Lake Havasu, which has a TDS of about 740 ppm, with its well water to obtain a blend not to exceed 1,000 ppm for use in its service area. Since the Company does not have a water right to con- sumptively use mainstream water, a one-year agreement was made with the Chemehuevi Indians to divert 365 acre-feet per year from Lake Havasu. The plan would return the same quantity of water, but at a higher salin- ity, either to Lake Havasu or for use on the Indian Reservation. Thus, "diversions less return flow" would appear to be zero. Since this proposed use appeared to be in conflict with the decree in Arizona v. Cali- forma, the Attorney General, at the Colorado River Board's request, sent letters to the So- licitor General of the United States and to the Company notifying them that in Cali- fornia's view, the quantities of water decreed to the various Indian reservations under Ar- ticle II (D) are for use within the boundaries of those reservations. By Letter of September 16, 1970, the Regional Solicitor of the Depart- ment of the Interior notified the Attorney General that the Bureau of Indian Affairs would not renew the permit issued to the Company which expired on July 16, 1970. Savery-Pot Hook Project The staff reviewed a draft report by the Federal Water Q!!ality Administration (FWQb), dated November 1970, of the wa- ter quality aspects of the authorized Savery- Pot Hook Project located in Wyoming and Colorado. In response to the invitation by the FWQb, the Board submitted a number of comments on the report which were coor- dinated with the Department of Water Re- sources and the State Water Resources Con- trol Board. Of major interest was the report's recom- mendation that salinity control features be included as a part of the proposed project to mitigate the expected adverse effects of the project on water quality. The report recom- mended that such mitigation features be in- cluded in the Project Definite Plan and pro- vide for installation and operation of salinity control measures, either in the project area or any other area in the Colorado River Basin where they are found to be effective and effi- cient. Salinity Surveillance Stations Early in 1970, the Colorado River Board received from the Bureau of Reclamation a tabulation entitled "Salinity Surveillance Stations-Colorado River," which covered the Colorado River from Lake Mead to Mex- ico. The Bureau invited the Board and other agencies to comment as to the adequacy of the surveillance program. After receiving the comments from all agencies, a federal task force composed of representatives of the Fed- eral Water Q!!ality Administration, U. S. Geological Survey, International Boundary and Water Commission, and the Bureau of Reclamation was formed to develop an effec- tive coordinated surveillance program. The task force identified 57 water quality moni- toring stations operated cooperatively by the four agencies. A specific sampling and test- ing schedule was proposed for each station. By use of the network and testing schedule, the Bureau of Reclamation anticipates that salt tonnages of all major diversions and re- 27