Laserfiche WebLink
<br />. <br /> <br />!. <br />.,:' <br /> <br />.' <br />...., <br /> <br />iIi-'" <br /> <br />,. <br /> <br />l <br /> <br />N <br />-J <br />00 <br />,&;.. <br /> <br />Dolores River near Cisco, Utah, are subtracted from the load at site 09180500 <br />to give the salt-load increase at the near-Cisco station. Methods A, B, D, <br />and E give a larger salt-load increase at the State line than at the near- <br />Cisco station, which is explained by the loss in streamflow between these two <br />sites. Method C gives a lower salt load at the State-l ine site than the near- <br />Cisco site for 16 of the 23 years. The reason for this is not readily appar- <br />ent, but probably is related to the differences in the slope of the discharge <br />versus specific-conductance regression curves for these stations. <br /> <br />CONCLUSIONS <br /> <br />. '. <br /> <br />." <br /> <br />The computations give several alternative methods that can be used to <br />calculate salt load and they indicate that different methods can produce dif- <br />ferent loads, Most of the salt loads give values within about +30 percent of <br />the average of all methods combined, but differences of 70 percent do occur. <br />Periods of missing record for the Colorado River at the State I ine as well as <br />missing periods for the Dolores River near Cisco, Utah, and the Colorado River <br />near Cisco, Utah, prevent the direct computation of salt load by all methods <br />for the complete time period. Estimates for the missing periods must be used. <br />Complete water-qual ity records for all stations where this type of data are <br />derived is very rare and, therefore., .statistical methods, such as C and E, <br />which bui Id a water-qual ity record from streamflow are very valuable if they <br />will give re~uit~ t1lat are wiUlil1 elr'Or j;Ulii.s LlldL ar~ dL.ceptobleo Th.;:rc is <br />no perfect substitute for good data over the required time period and, there- <br />fore, it is desirable to continue to collect data for future use. <br /> <br />'l <br /> <br />i <br /> <br />-.t <br /> <br />i <br />, <br />, <br />, <br /> <br />i <br /> <br />1 <br />, <br />, <br />.; <br />j <br />i <br />I <br />j <br />, <br /> <br />15 <br /> <br />~ <br />J <br />1 <br />, <br />i <br />1 <br />~~ <br />'~_ .loJ.;:-$...-..,u,....1 ~ <br /> <br />i <br /> <br />~ ""'-~...... <br />