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<br /> <br />,. <br />the water stage recorde' failed just after 1800 hours bn <br /> <br />June 16. A'peak discharge of about 110,000 cfs at 2100 hours <br /> <br />was computed from floodmark 12,7 miles upstream. (Reference, <br /> <br />USGS Water Supply Paper l8S0-B, page B39,) <br /> <br />Water stage recorder data of the floods at several gaging stations <br /> <br />resulting from the May 4-8, 1969 storm were obtained and the flood <br /> <br />hydrographs drawn. Examination of. these hydrographs and associated <br /> <br />precipitation data showed that analyses for dimensionless graph pur- <br /> <br />poses would be complicated and could not be done in the time available. <br /> <br />One notable feature of this event was the severe flood runoff from the <br /> <br />lower portion of the Bear Creek drainage basin. A peak discharge of <br /> <br />2,340 cfs, 1730 hours, May 7, 1969, was recorded at the gage at <br /> <br /> <br />Morrison, but a peak discharge on May 7 of 8,150 cfs at the gage at <br /> <br />Shefidan, 1.3 miles upstream from the mouth, was computed from flood- <br /> <br />~r~s. The peak of 8,150 cfs.is 2.72 times the previous peak of <br /> <br />record - 3,000 cfs, 7/7/33 - for the continuous period of record <br /> <br />beginning March 1927. <br /> <br />Time limitation also precluded analyses of the storm and severe flood <br /> <br />event of May. 5-6, 1973, in the Denver vicinity. Runoff from thi.s <br /> <br />storm established a new peak of record at the Kersey 'gaging station, <br /> <br />/ / ,o.,! <br /> <br />preliminary estimate 31,500 cfs. <br /> <br />Since attempts to derive dimensionless graphs from recent flood events <br /> <br />were unsuccessful, two dimensionless graphs were selected from our. <br /> <br />files for use in this study: <br /> <br />4 <br /> <br />. - (. '.," ._.. -<''''Z',. ,,-,...;.. <br /> <br />,---,.. <br /> <br />. <br /> <br />~_i.; <br />