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15 <br />A discharge gauge has also been established by the Park Service on the <br />Yampa near the entrance to the canyon, just below Deerlodge Park. Although <br />this station has the advantage of measuring the flow of the Yampa as it <br />enters the Monument, its record lacks the length and continuity of the USGS <br />stations. For this reason, the past flows of the Yampa through the <br />Monument is best measured as the stun of the discharges at Maybell and Lily. <br />The average discharge of the Yampa at Maybell over the period of <br />record is 1,550 cfs. Peak flows occur in May or June. The maximum flow on <br />record is 17,900 cfs from May of 1917. The minimum flow is 2.0 cfs, <br />recorded in July, 1934. The peak base flow (on the average amount of the peak <br />flow which is not contributed by direct runoff) is 7,000 cfs. Flood recurrence <br />intervals are shown in Fig. 4. <br />The average discharge of the Little Snake over the period of record is <br />573 cf s. Peak flows generally coincide with those of the Yampa. The <br />maximum flow on record is 14,200 cfs in May, 1926. The river may be <br />completely dry in August or September. The peak base flow is 3,500 cfs. <br />Recurrence intervals are shown in Fig. 4. <br />The combined flows from Maybell and Lily indicate an average flow <br />through the Monument of 2,123 cfs with a peak base of 10,500 cfs. From the <br />maximum historic flows of the Yampa and Little Snake, the potential peak of <br />the Yampa through the Monument is over 32,000 cfs; however, the highest <br />combined flow since 1950 is 20,520 cfs, which occurred on June 9, 1957. <br />Since the Little Snake is often dry during the summer, the minimum flow <br />through the Monument i5 primarily controlled by the upper Yampa. The <br />combined flaws recorded during the study period are shown in Fiq. 5. <br />