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.l r dd . ~ ....~. - ::lfi X~\1\r,l ~ ~'",;''' k, ,,~ W' IV?S'.~' ~., :, ,..,., ,.' ',;:1' :,n ~,"::_:;' ':i,c: 'J ~:l to,,' f~((( ,>'i<."'''_~ OFFICE OF BOARD OF COUNTY COMMISSIONERS PHONE (3031 353./212 EXT.221,2n/l.nJ P.O. BOX 7ri8 GREELEY, C?lORADO BOG31 COLORADO , ~~ February 8, 1977 Felix L.' Sparks, Director 'Colorado Water Conservation Board Centennial'Building 1313 Sherm~n Street Denver, Colorado 80203 Dear Hr. Sparks: This letter is in regard to a proposed Corps of Engineers companion type floodplain information study of the Cache La Poudre Basin. As we understand the study, it will provide technical information on the consequen6es of future basin activities as they relate to potential flooding on the Poudre Riv~r floodplain, ~'.... . In Weld ,County there are four principal subjects, as fo11O\"s, which we;' would desire to be addressed by such a study in order to benefit our planning and engineering efforts: '. 1. Gravel Operations The Poudre floodplain contains quality gravel deposits which are covered with very little over burden, and w~ich extend to depths of' 55 feet in the Greeley area. Current and future floodplain use will relate directly tb gravel operations. Gravel stock piles within the floodplain, however, may deviate from Federal, State and County floodplain standards by displacing flood- w~ters onto lands which otherwise would be unaffected, It would not be practical to require such stock piles be located outside the floodplain in most cases. ThereforeJ technical information regarding the conse- quences of such activities and realistic approaches to minimizing adverse consequences is a concern of this jurisdiction. For instanccJ the proposed CorpR study may address (1) stockpile effects on flood waters rega~ding up or downstream damages, (2) typical WELD COUNTY COMMISSIONERS NORMAN CARLSON GLENN K. BILLINGS JUNE STf.INMARK VICTOR JACOeUCCI ROY M05Efl