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<br />o <br />w <br />c.o <br />~ <br /> <br />11 The 1973 depletions for New Mexico have been revised <br />since publication of the Forum Report, "Water Quality <br />Standards for Salinity Including Numereic Criteria and Plan <br />of Implementation for Salinity Control, Colorado River <br />System". The values shown in the 1975 Forum Report have thus <br />~een superseded. <br />-I Values of Arizona and California are diversions less <br />~eturns including estimated unmeasured return flows. <br />I Values for Nevada are gross diversions. <br />11 The estimated uses for Utah have been revised for the <br />years 1973-1979. <br />11 Does not inClude net instream losses below Hoover Dam and <br />tributary inflow between Lee Ferry and Hoover Dam estimated <br />60 average 200,000 aflyr and 750,000 aflyr, respectively. <br />-I Starvation Reservoir drained. <br />II Starvation Reservoir refilled. <br />*Provisional Record. <br />illlDerived from U.S. Bureau of Reclamation data. <br /> <br />, <br /> <br />Salinity Concentration at Monitoring Stations <br />Salinity concentration at monitoring stations below <br /> <br />Hoover Dam for years 1973 through 1981 are shown on Table 3. <br /> <br />These values are all less than the 1972 numeric criteria. <br /> <br />TABLE 3 <br />FLOW-WEIGHTED AVERAGE ANNUAL SALINITY CONCENTRATIONS <br />AT SELECTED STATIONS <br />(Total Dissolved Solids in mg/l*) <br />Calendar Year <br />Numeric <br />Criteria 1973 1974 1975 1976 1977 1978 <br /> <br />1979 1980 <br /> <br />1981 <br /> <br />Below Hoover <br />Dam <br /> <br />723 <br /> <br />706 <br /> <br />686 <br /> <br />685 <br /> <br />674 <br /> <br />667 <br /> <br />686 <br /> <br />694 <br /> <br />706** 678i111 <br /> <br />Below Parker <br />Dam <br /> <br />747 <br /> <br />726 <br /> <br />700 <br /> <br />702 <br /> <br />699 <br /> <br />681 <br /> <br />681 <br /> <br />703 <br /> <br />684** 721** <br /> <br />At Imperial <br />Dam <br /> <br />879 <br /> <br />846 <br /> <br />836 <br /> <br />828 <br /> <br />823 <br /> <br />821 <br /> <br />812 <br /> <br />809 <br /> <br />758;1* 81611* <br /> <br />*Determined annually by the Bureau of Reclamation from data <br />collected by the U.S. Geological Survey. <br /> <br />**Provisional records. <br /> <br />-6- <br /> <br />i<>C.~.;.;;. <br />