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<br />ment has been miniIM.I in th" flOQd pl"i.~ """"s considered in this <br />report. As a result, definitive records of past floods are extremely <br />m~qer for the ~kansas trib~taries such as Salt Cre"k. <br /> <br />CURRENT FLOOD SITUATION <br /> <br />Developments in the Fiood Plain <br />Plates 3 thro~gh 10 sr~w the study area limits and flood <br />plain of Salt Creek. Salt Creek is a relatively minor creek ~ith <br />intermittent flow in its upper reach. The natural stream has gained <br />in importance in that it is used as the runoff channel for the St. <br />Charles Flood Ditch and also in that the CF , I Steel Corporation has <br />erected two large storage reservoirs on the stream to provide water <br />for their industrial processes. <br />Before the construction of the St. Charles reservoirs, <br />the creek was confined in a rather bro~ shallow channel until it <br />reached the area of the present highway. There is a rather well <br />defined sinuous channel at this point continuing downstream some six <br />miles to the outlet at the Arkansas River. There is some evidence <br /> <br />frern geologic maps that the stream has not always been cOlllpletely <br />contained in the defined channel below t.he 1-25 brldg"s. It. appear~ <br />that it has flowed at times in the past as overland sheet flo~ to the <br />area north of the present reservoirs into the Lake Minnequa area. <br /> <br />A~ost all of the Salt Creek channel is presently on <br />land owned by the CF & 1 Steel Corporation. The St. Charles reser- <br />'lOirS are owned and operat.ed byCl' & I with a portion of the ",ater <br />being used in their plant processes then returned to t.he river. The <br />GOnstructionoftlLeolJhighwayU.S.8S-B7andtheconstruct.ionof <br />the new Highway 1-25, both of which are elevat.ed, has served as a <br />barrier to foroe the overflow from Reservoir #2 and #3 overland in <br />. <br /> <br />the direction of the southwest part of the City west of the highways. <br />As Can be Seen on Plates 6 and 7 this flow moves north toward Lake <br /> <br />Minnequa, also known as St. Charles Reservoir No.1. <br /> <br />Obstructions to rlood Flows <br /> <br />Natur<ll obstructtons to flood flows include trees. <br />br"sh and other '.'''''J"t,~tic~. growing alo~,q the r,ver w.T'J<~. The reaches <br /> <br />; <br /> <br />, <br />