The five-year moving FWC for TDS (Figure 3.6) did not exceed the long-term objective of 1,000 mg/L 

 in 2003. The maximum monthly value calculated in 2003 was about 887 mg/L, which is slightly less 

 than the previous year maximum monthly value of 943 mg/L. 



The daily TDS values, as generated by linear regression from the daily specific-conductance readings, 

 for the period January 1990 through December 2003 are shown in Figure 3.7. The data show an abrupt 

 drop in TDS corresponding to the snowmelt runoff occurring during the spring of each year. 



The relationship between TDS and specific conductance applied to data collected from 1974 to 2003 is 

 as follows: 



TDS = (0.62461 x specific conductance) + 35.184 

 (R^ = 0.84, n = 617) 



13 



