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Partial-duration series analyses for these same three time periods yields a slightly . different perspective about the differences among these periods. The magnitude of high recurrence floods (1.25 yr - 2 yr recurrence interval) has decreased in the post-Taylor Draw Dam period, while the magnitude oflarger floods (5 yr - 10 yr recurrence interval) may have increased (Fig. 8) (Table 2). This may be due to the small storage capacity of Kenny Reservoir, and also to climatic changes during the period after completion of the dam. The small reservoir can store a portion of the inflow of small floods, but can not control larger magnitude floods. The dam's capacity may control runoff in drought years, but is insufficient to control floods in high runoff years. The distribution of mean monthly discharges has not changed substantially since the completion of Taylor Draw Dam. Hydrographs representing three time periods show that the monthly mean daily discharge has not changed appreciably since the completion of the dam (Fig. 9). Baseflow discharges after the dam are slightly higher than the two decades directly preceding the dam, but do not differ from the period between 1923 and 1964. Identification of the Modern Flood Plain and Bankfull Discharge Bankfull discharge is defined as the discharge at which the active flood plain begins to be inundated. In the detailed study site, the lowest elevation depositional surface that is longitudinally correlative begins to be inundated at a discharge of approximately 105 m3/s (3700 Wls), which has a recurrence of 1.7 yrs on the long-term annual series (Fig. 10) and about 3 yrs for the partial duration series for the period between in 1984 and 1997. This surface is characterized as a flat low-elevation surface 19