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<br />" <br /> <br />COLORADO WATER CONSERVATION BOARD <br />Depanment of Natural Resources <br />721 StarE' Centennial 8uilding <br />, 313 Sherman Street <br />Denver. Colorado 80203 <br />Phone: (303) 6bb.3", <br /> <br />STATE OF COLORADC <br />~ <br /> <br />February 5. 1990 <br /> <br />f(ovf(omf" <br />Cove-FRor <br />I. WilItam MtDoMld <br />Diff'Cl0r <br />D"vid W. W.I.~, <br />Oepuly DlJector <br /> <br />Mr. Sheldon Boone. State Conservationist <br />US Soil Conservation Service <br />6S5 Parfet Street <br />Room E 200C <br />Lakewood. Colorado 80215-5517 <br /> <br />Dear Sheldon: <br /> <br />I am in receipt of a floodplain study request from the Town <br />of Pierce. Colorado (copy enclosed). Your office has conducted <br />a ~umber of hydrOlogic investigations for the Spring Creek and <br />Lone Tree Creek basins. Given your agency's knowledge of the <br />hydrologic characteristics of the study area. I am writing to <br />request that the Soil Conservation Service (SCS) conduct a <br />detailed hydrologic investigation for the drainage basin <br />upstream of the Town of Pierce. <br /> <br />The Town needs this hydrologic data to evaluate the flood <br />risks to their community and formulate flood protection <br />measures. We have been in communication with the town engineer <br />and find that there are some questions regarding the parameters <br />which were used in the 1976 FEMA study. <br /> <br />From our preliminary studies of the watershed and existing <br />floodplain features (bridges. embankments. channels. and open <br />floodplain areas). it appears that the selected design <br />discharge will be an important element in the formulation of a <br />feasible project. Therefore. it is of utmost interest to the <br />town and us that a representative discharge be computed for the <br />watershed. <br /> <br />The detailed hydrOlogic investigation should develop the <br />following data: <br /> <br />o Discharge profiles for the 10-. 50-. 100-. and SOD-year <br />flood events. <br /> <br />o Flood hydrographs for the 10-. 50-. 100-. and SOD-year <br />flood events. <br /> <br />1839E'" <br />