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<br />. <br /> <br />002539 <br /> <br />. <br /> <br />280,900 acre-feet annually to 171,300. Jt. Exh. 94 at 49. Over <br />the same periods, inflow at Canon City increased slightly. LQ. <br />After construction of John Martin Reservoir some decline in <br />Stateline flows was to be expected. Kansas understood during the <br />compact negotiations that it would get less total flow, but that <br />its supplies would be better regulated and more usable. Kan. Exh. <br />129, Vol. II at 383. <br /> <br /> <br />C. Tributary Inflows. <br /> <br />One of the issues in the case is the extent to which <br />tributary inflows to the mainstream have declined and thus may <br />partially account for St.ateline depletions. The issue is not <br />easily resolved since the only tributaries that have been con- <br />sistently gaged are Fountain Creek and the Purgatoire River. These <br />two tributaries drain about 4,429 square miles, but approximately <br />15,272 square miles lie within the drainage areas of the other <br />tributaries. Colo. Exh. 4*, Table 1.2. During the trial Kansas <br />attempted t.o estimate the ungaged tributary inflow by developing a <br />rainfall-runoff model based on certain correlations, the out.put. of <br />which was fed int.o its integrat.ed hydrological-institutional model. <br />Colorado was critical of both t.he Kansas met.hodology and results, <br />but used its own water budget analysis t.o develop ungaged tributary <br />flows as the residual of t.he budget process. It. is perhaps <br />sufficient to not.e at t.his point in the Report that the states are <br /> <br />AllJ6672 <br /> <br />-59- <br />