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<br />on22~~ <br /> <br />. <br /> <br />. <br /> <br />(1) The Upper Republican Division, upstream from Swanson <br />Lake, 15,600 acres. This division includes Bonny Dam and Reservoir. <br /> <br />(2) The Frenchman-Cambridge Division, from Swanson Lake <br />(Trenton Dam) downstream to the mouth of Sappa Creek, 66,600 acres. <br />This division includes Enders Reservoir on Frenchman Creek, Swanson <br />Lake, Hugh Butler Reservoir on Red Willow Creek, and Harry Strunk <br />Lake on Medicine Creek. <br /> <br />(3) Kanaska Division, the basins of Beaver, Sappa and <br />Prsirie Dog Creeks, 8,500 acres. This division contains Norton <br />Reservoir (under construction) on Prairie Dog Creek and the poten- <br />tial Herndon and Oberlin Reservoirs on Beaver and Sappa Creeks, <br />respectively. <br /> <br />(4) Bostwick Division, from Harlan County Reservoir down- <br />stream to Concordia, Kansas, 86,200 acres. This division includes <br />Harlan County Reservoir and Lovewell Reservoir. <br /> <br />(5) Lower Republican Division, between Concordia and <br />Milford Reservoir (under construction), 14,500 acres. <br /> <br />6. CLIMATE AND RUNOFF <br /> <br />a. Climate. Most of the Republican River basin lies west of <br />the ninety-seventh meridian, which is generally accepted as the <br />boundary between the semiarid plains to the west and the more humid <br />regions to the east. The climate is characterized by extremes. The <br />mean temperature is 510 F., but extremes of minus 430 F. and of <br />1180 F. have been recorded within the basin. The normal growing <br />season ranges from 150 days in the western section to 190 days in <br />the eastern. The annual precipitation is only 16 inches in Colorado <br />and increases easterly to 30 inches in the lower basin. The rainfall <br />rarely is well distributed, with both localized cloudbursts and <br />prolonged droughts in the weather picture. In May 1935, a rainfall <br />of 24 inches in less. than 24 hours was. reported at one location in <br />the upper Republican River basin. At other times, droughts and <br />duststorms have prevailed for extended periods. The average annual <br />snowfall of 27 inches normally does not contribute to flood runoff. <br /> <br />~. Runoff. The variable climate produces wide fluctuations <br />in streamflows. The observed discharge of the Republican River at <br />Clay Center, Kansas, during the 1934 drought was 1 second-foot on <br />9-11 August; and, within a year, the discharge reached 195,000 sec- <br />ond-feet on 3 June 1935. A recurrence of such extremes is not <br />expected now that there is an appreciable degree of upstream reser- <br />voir control, but these values illustrate the climatic conditions <br />which prevail in the basin. Presently, there are.43 stream gaging. <br />and six reservoir stage stations operated in the basin by the U. S. <br /> <br />7 <br />