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<br />I
<br />I TABLE 1-3 SALT LOAD ANALYSIS 1960-1977
<br /> BIG SANDY RIVER UNIT SALINITY STUDY, WYOMING
<br />I
<br />I Water 1/ Water Tons 3/ Tons Tons
<br /> Volume Volume of of of
<br /> at at Difference Salt Salt at Salt at
<br /> Gasson Simpson in Simpson Gasson
<br />I Year Bridge Gulch Volume (7.96 ) Gulch Bridge
<br />I 1960 16,990 11,145 5,845 46,530 37,800 84,330
<br />1961 13,010 8,202 4,878 38,830 27,900 66,730
<br />I 1962 35,520 26,516 9,004 71,670 52,500 124,170
<br />1963 24,160 16,862 7,298 58,090 57,800 115,890
<br /> 1964 26,940 19,159 7,781 61,940 58,700 120,640
<br />I 1965 45,940 35,879 10,061 80,090 72,700 152,790
<br /> 1966 49,280 38,960 10,320 82,150 75,100 157,250
<br />I 1967 60,570 49,645 10,925 86,960 77 , 700 164,660
<br />1968 49,640 39,290 10,350 82,390 78,600 160,990
<br />I 1969 72,070 60,890 11,180 88,990 87,200 176,190
<br />1970 30,580 22,240 8,340 66,390 68,300 134,690
<br />I 1971 41,980 32,270 9,710 77,290 75,300 152,590
<br />1972 76,110 64,970 11,140* 92,500 182,400
<br /> 1973 58,170 46,690 11,480* 100,600 197,700
<br />I 1974 65,850 54,350 11 ,500* 100,800 194,900
<br /> 1975 57,910 47,820 10,090* 98,500 179,800
<br />I 1976 54,400 44,060 10,340* 105,700 176,300
<br />1977 34,150 25,280 8,870* 70,640 143,240
<br />I TOTAL 1,338,340 2,685,260
<br />I AVERAGE ANNUAL 74,350 149,180
<br /> .85109
<br /> 11 Computed from volume at Gasson Br;dge = 6.1045 x (Volume at 5;mpson Gulch)
<br />I (for 1960-1971), measured flow 1972 through 1977.
<br />l/ Mean annual salt concentration gain between Simpson Gulch and Casson Bridge
<br />I for the per;od of 1972-1977. The salt gain water factor is estimated at
<br />7.96 tons per acre-foot.
<br /> G'J( ~t. ~
<br /> ~/ Measured change from gages.
<br />I
<br />I 1-5
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