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sediment normally transported by lower discharges could be transported by flows greater . than 40 m3/s because of the supply-limited characteristic of the stream. Flows higher than 40 m3/s are capable of entraining gravel exposed on bars in the study reach, as estimated by Shield's relation. Entrairunent occurs at many bars near bankfull discharge of about 105 m3 Is, which has a recurrence of about 3 yrs on the partial duration series for the period following completion of Taylor Draw Dam. In this case, bankfull discharge is much greater than the effective discharge for suspended load, which we estimate to between 48 and 82 m3/s. Our study plan precluded determination of the etfective discharge for bedload, but this value is likely to be larger than that calculated for suspended load. The high volume of suspended load, however, and the larger proportion of the bed covered by fine sediment suggests that a habitat-maintenance flow claim be based on ensuring that all suspendable sediment be transported through the study reach. The White River undergoes an annual cycle of scour and fill which can change the elevation of the bed by as much as 1 meter. The range of scour and fill defines the active layer of the bed which can mobilized during flooding. These flows thus have the ability to reshape in-stream habitats. The changes in bed elevation during the spring flood suggest that much of the sediment transported in the White River is moved as a pulse of mobilized bedload material. While the bed scours at higher discharges in most of the measured cross-sections, aggradation of the bed occurs near the coarsest cobble bars. Aggradation of the bed in . these regions could represent finer material moving over the more stable coarse material, and suggests the occurrence of selective transport. Lisle (1995) found that transport of 27