Laserfiche WebLink
<br />forecast, it was assumed that the bridge structures would stand <br />intact. Some clogging is to be expected which may change estimated <br />flood limits. <br />The Standard Project Flood profile for Fountain Creek <br />averages about 7 feet higher than the Intermediate Regional Flood <br />along most of the stream. The June 1955 flood heights averaged <br />about 3 feet lower than the Intermediate Regional Flood. <br />Figures 8 through 10 show the heights that would be <br />reached by the Standard Project Flood and the Intermediate Regional <br />Flood on facilities presently existing within the Fountain Creek <br />flood plain in the study reach. <br /> <br />Velocities. Rates of Rise. and Duration <br /> <br /> <br />Water velocities during floods depend largely upon the <br /> <br /> <br />size, shape, and slope of the streambed, and the condition of the <br /> <br /> <br />channel, all of which vary on different streams and at different <br /> <br /> <br />locations on the same stream. <br /> <br />Tables 8 and 9 show the maximum velocities that would <br /> <br /> <br />occur in the main channel and overbank'areas of Fountain Creek <br /> <br /> <br />during the Intermediate Regional Flood and Standard Project Flood, <br /> <br /> <br />respectively. <br /> <br /> TABLE 8 <br /> INTERMEDIATE REGIONAL FLOOD <br /> MAXIMUM VELOCITIES <br /> FOUNTAIN CREEK <br /> Maximum Velocities <br />Location Channel Dverbank <br />Mile ft. per sec. ft. per sec. <br />6.7B 21.9 5.2 <br />0.23 17.9 7.7 <br /> <br />37 <br />