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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />! I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br /><<:;tD~ <br /> <br />( <br /> <br />( ~AMP DRESSER & McKEE INC. <br /> <br />Rio Grande River <br />Rio Grande River <br /> <br />7,700 <br />9,320 <br /> <br />9,880 <br />11,850 <br /> <br />10,730 <br />12,880 <br /> <br />12,610 <br />15,150 <br /> <br /> <br />environmental enr;;;r:~~s. SCiffn!ists, <br />p!ar:nefs. t. m3nar.err:>rr cxslA'ants <br /> <br />'Writers Tow:?l. SuirE!' flea <br />1660 SOt.::n AI~;cn Str~t Danver, Co'o'a~,j aC222 <br />303 753-~J:.1 <br /> <br />I-lay 14, 1930 <br /> <br />Dr. John Liou <br />Federal Emergency Management Agency <br />Bui1 ding 710 <br />Denver Federal Center <br />Lakewood, Colorado 80225 <br /> <br />Dear John: <br /> <br />In reference to our preliminary Hydrologic Review for Nine Colorado <br />Communities, and our discussions concerning this summary, we 110uld <br />like to request approval of the hydrologic analysis for the following <br />bi0 communities. <br /> <br />Community <br /> <br />Del Norte <br />Nonte Vista <br /> <br />Stream <br /> <br />Discharge (cfs) <br />10-yr 50-yr 100-yr 500-yr <br /> <br />The discharges shown for the Rio Grande River at Del Norte are the <br />result of the a station of the stream gauge at Del Norte. An area <br />proportion l'las used to estimate the discharge-frequency curve for the <br />Rio Grande River at Monte Vista from the station data at Del Norte. <br />The laO-year discharge at Monte Vista compared favorably with the <br />results of a 1969 Corps of Engineers Study. It is suggested that the <br />above flows be used for the hydraulic analysis in these reaches of the <br />Rio Grande River. " <br /> <br />The Hydrologic Summary will be revised when all the hydrologic analyses <br />for each community is finalized. If you have any further questions <br />or comments on the flow rates recommended for the towns of Del Norte, <br />and Monte Vista, please let me know as soon as possible. <br /> <br />Sincerely yours, <br /> <br />CAMP DRESSER & McKEE INC. <br /> <br />f::!;;;;;J. I~~ <br /> <br />Project Engineer <br /> <br />RNv1jl at <br /> <br />cc: Gene Jencsok, CWCB <br /> <br />t, <br />I <br />