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<br />we agreed.on behalf of the state of Colorado to maintain a flood chan- <br />nel on Bear Creek below the Bear Creek Dam. I believe it was about <br />1967 that this board designated the flood plain area for Bear Creek. <br />That flood plain was designed before ~e had the flood of 1965. As a <br />matter of fact, we have had some floods in subsequent years on Bear <br />Creek and subsequent to the original report considerable development <br />has occurred along Bear Creek. We asked the Corps of Engineers to <br />review the flood plain on Bear Creek below the proposed dam so that we <br />could advise the local communities. that is. the cities of Lakewood, <br />Sheridan. and Denver and Jefferson County. The Corps has revised that <br />flood. plain and there are representatives here today from the Omaha <br />office to present the revised plan to us. <br /> <br />I <br /> <br />t~. Patenode:' I am George Patenode of the division of planning with <br />theCorps.of Engineers. Omaha District. I will go through this report <br />briefly to show you what it contains. ~tr. Sparks has said that this <br />is a revision to a previous report by us. This report takes into <br />consideration more flood data as experienced during the 1965 flood. <br />This information we used in our Bear Cre~c stream analysis and also <br />in the Liorrison flood plain information report. This particular <br />report is a special flood hazard information report and differs <br />slightly from our usual report which we call a flood plain information <br />report in that this report is a little briefer in text and we have <br />different policies of funding. The same procedures and methods are <br />used for our standard flood plain information report. <br /> <br />Briefly. the Bear Cre~c basin has a drainage area of 261 square miles. <br />which adjoin the South Platte River at Sheridan. Colorado. The basin <br />is about.36 miles long and has a maximum width of 13 miles. Approxi- <br />mately 90 percent of the drainage basin is in the mountains. Turkey <br />Creek is the major tributary and it drains 52 square miles. Its <br />confluence is in. the Haunt Carbon damsite vicinity. This report <br />extends upstream from the mouth about 7.5 miles to the Bear Cre~c <br />(Mt. Carbon) damsite, which is approximately 1.8 miles upstream of <br />Kipling Street. The study reach downstream of Wadsworth Avenue has <br />had considerable development in the flood plain. The upstream of <br />Wads\~rth Avenue. the flood plain. has not really been urbanized as <br />yet. There are some gravel mining activities in the area. The <br />designated flood plain in the study reach is approximately 1,500 feet <br />wide; and in the lower basin, which is below ,'1adsworth Avenue, about <br />70 percent of the flood plain has been developed. Land use in the <br />study reach is about 12 percent commercial, 24 percent residential, <br />9 percent transportation, 4 percent public property, and the balance <br />. is miscellaneous items. In 1970, 6,050 people lived in the Bear <br /> <br />I <br /> <br />-47- <br />