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Table 3. water quality parameters of the North Fork of the Gunnison <br />River at Somerset, Colorado. <br />Parameter Feb. 1978 May 1978 Aug 1978 <br />Average Flow (cfs) 63 1,725 217 <br />pH 7.9 - 8.4 <br />Ca (mg/1) 20.0 21.0 19.0 <br />Mg(mg/1) 3.5 4.1 2.9 <br />Na(mg/Z) 8.I 8.3 4.9 <br />K(mg/1) 0.6 1.0 0.8 <br />HC03(mg/1) 79.0 86.0 73.0 <br />SOq(mg/1) 12.0 14.0 15.0 <br />CI (mg/1) 2.3 1.6 1.Z <br />Measured TDS(mg/1) 95.0 101.0 89.0 <br />TSS(mg/1) 30.0(2) 329.0(3) 204.03) <br />Sum of constituents <br />(meq/1) (1) 86.0 93.0 80.3 <br />Sum of ca tions(meq/1) 1.66 1.78 1.42 <br />Sum of anions(meq/I) 1.60 Z.75 Z.54 <br />ZCa+Mg+NA+K+HC03/2 +SOq +C1. <br />2,~feasured on March Z3, 1979 <br />3Measured in I979 <br />