Laserfiche WebLink
♦ Encroachments are not being made into the channel by trees, brush, or <br /> sediment that may hinder the performance of the channel during flooding <br /> event. <br /> Additional inspections will be required at each of the structures such as road crossings, <br /> railroad bridges, and canal siphons. These inspections will be made to identify problems <br /> and complete replacement or repairs. The inspections and repairs will be completed <br /> using existing City and County personnel and equipment. As such, no identifiable <br /> manpower and equipment costs are attributed to the annual maintenance. An allowance <br /> of$5,000 per year for material costs should be budgeted for material costs, assuming that <br /> periodic replacement of short sections of fences, riprap, and other erosion control <br /> measures will be required. <br /> Frequency and Severity of Flood Events <br /> As discussed in Section III, this area of Logan County and the City of Sterling has been <br /> subjected to severe flooding from Pawnee Creek and the Pawnee Creek overflow on at <br /> least three occasions including 1935, 1965 and July of 1997, and more frequent but less <br /> damaging lower flows. The 1997 storm is estimated to have caused between $10 to $12 <br /> million in damage along the lower Pawnee Creek, Town of Atwood, and Pawnee Creek <br /> overflow area. Damage County wide from this event was even greater. Based on a <br /> graphical plotting of peak flood flows from previous floodplain studies and an estimated <br /> flow of 3800 cfs at the Cemetery (provided by CWCB based upon high water marks), it <br /> is apparent that the 1997 flood was approximately the 75-year storm at this location. <br /> Estimated Dollar Amount of Damages Prevented <br /> Flood damages include direct damage to buildings and contents, damages to roads and <br /> bridges, and several forms of indirect damages. In the case of the Pawnee Creek <br /> overflow, buildings subject to damage include both residential and commercial. <br /> Significant damage to crop lands can also result from flooding. Examples of indirect <br /> damages include: Loss of sales; removal of debris; damage to public utilities; and loss of <br /> rentals. <br /> Five categories of flood damages were estimated, as follows: <br /> 1. Loss of Life <br /> 2. Direct Damages <br /> 3. Indirect Damages, Including Loss of Sales Tax <br /> 4. Secondary Damages <br /> 5. Intangible Damages <br /> 34 <br />