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8 from 1965-1987. Assuming that 27 percent (based upon six measurements from 1980 to 1986) of the suspended load is sand, the annual sand-load estimate for the Duchesne is 46,000 tons/year for 1965-1987 (table 4). For the White, the flow-duration data for the gauge near the confluence from 1974 to 1986 was used to derive an estimate for suspended sand-load discharge of 1,020,000 tons/year (table 5). Sand-Load Mass Balance A mass-balance of the suspended sand-load estimates for the gauged locations along the Green and its tributaries provides a description of the present equilibrium status of the channel. Bed-material load (sand load) is the best indicator because it represents the movement of streambed materials. An imba- lance of bed-material loads between two locations may indicate aggradation or degradation of the channel while an imbalance of suspended sediment load is not as reliable an indicator of channel conditions. As described earlier, Andrews [31 constructed a budget of average annual suspended sediment loads for the Geological Survey gauges in the Green River Basin. This budget described the transport conditions in the Green prior to and after construction of Flaming Gorge. The data collected from 1986 to 1988 for this study confirmed that the present-day bed-material transport of the Green in the upper study reach could be described using the long-term gauging records of suspended sediment collected at the Geological Survey gauges near Jensen and Ouray, Utah. Sand-load estimates for the White and Duchesne were constructed from Geological Survey gauging records of suspended sediment for the period of record available at these sites. The long-term suspended sedi- ment record at the Green River, Utah, gauge also represents the present-day transport although few data applicable to the Modified Einstein technique were available. Table 9 presents the sand-load mass balance for the reach of the Green from the site near Dinosaur Quarry to Green River, Utah. For the upper reach, the sand loads for the Dinosaur Quarry and Ouray Refuge sites are equal, as both are developed from the Jensen gauge records. Between the Ouray Refuge and the site below Willow Creek, an additional 1,430,000 tons/year of bed-material load is gained by the Green. The White and Duchesne computed sand-loads total 1,066,000 tons/year. The difference 364,000 tons/year, represents about 12 percent of the mean annual suspended sand load of the Green River below Willow Creek. Although no bedload information is available for the White River, streams of similar characteristics often have a significant bedload component. Bedload, the sediment that moves by rolling or sliding on or near the streambed, can range from 10 to 35 percent of the total suspended sediment load for a stream similar to the White (Strand and Pemberton [81). The dif- ference is suspended sand-load described above (364,000 tons/year) is sati- sifed if a bedload correction factor of about 10 percent is assumed for the mean annual suspended sediment load of the White (3,630,000 tons/year for 1975-1986). The suspended sand-load estimates for the White and Duchesne Rivers are sufficient to assume a quasi -equilibrium exists for the Green River between the Ouray Refuge and the site below Willow Creek.