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Show CHAPTER XIV 229 Work on Bureau of Reclamation Definite Plan Reports has been progressing on the salinity control measures upstream from Imperial Dam. Plans for construction of the Crystal Geysers Units have been deferred because of the relative cost effectiveness (see Twenty-Eighth Annual Report of the Colorado River Commission, September 30, 1976). Collection of specifications, design data and preparation of final designs are underway on the Paradox Valley and Grand Valley Units. Construction of the Las Vegas Wash Unit has been delayed to permit continued examination of the hydrosalinity system of the Las Vegas Wash aimed at developing a modified salinity control project. The reason therefor has been a reduction in the quantity of the ground water and salinity entering the Wash from the ground-water mound beneath the Basic Management, Inc., (BMI) evaporation ponds in Henderson since saline wastewater is now discharged by BMI into lined ponds. G. Operations Under Minutes Nos. 218, 241, and 242 The attached table shows the operation of Minute No. 218, Minute No. 241, and Minute No. 242 during calendar years 1965 through 1976 (Colorado River Board of California, Appendix to Annual Report for Calendar Year 1975). 1964 Calendar Year (Year Previous to Agreement) Under Minute 218 Average Makeup From Salinity of Wellton-Mohawk Diverted Bypass During Storage River Diverted Drainage Around Minimum Release by Mexico Discharge, Salt Load Morelos Dam, Treaty Order, (Approx.) at NIB, Acre-Feet Tons Acre-Feet Acre-Feet Acre-Feet p/m* 181,150 1,252,000 1,310 11-16-65 to 11-15-66 11-16-66 to 11-15-67 11-16-67 to 11-15-68 11-16-68 to 11-15-69 11-16-69 to 11-15-70 11-16-70 to 11-16-71 11-16-71 to 7-13-72 Under Minute 241 7-14-72 to 12-31-72 216,100 1,399,000 100,800 54,400 211,200 1,324,000 99,000 58,300 219,800 1,317,000 103,900 52,600 218,300 1,227,000 103,600 53,500 219,500 1,130,000 129,700 53,900 215,900 1,081,000 103,200 55,100 136,700 101,600 68,300 26,400 100,300 39,500 15,000 1,310 35,000 1,210 47,300 1,190 49,900 1,180 53,900 1,140 31,300 1,160 • * 1,106 1,030 |