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Transportation Systems - Damages to transportation syste~s ln Reach 2 affect the Union Pacific and Burlington Northern Railroads, County bridges at Perry Street and Briggs Street, and the crossing of the Lower Boulder Ditch. Using the flood profiles and maps as a guide. estimates were made at length of track or canal that might be damaged and of damage to the bridges and the siphon. Flood damage to transportation systems in Rcach 4 includes damages to the Burlington Northern Railroad, the County roads in Boulder and Weld Counties,the Kenosha Road bridge, and the Lower Boulder-Weld County DitCh. Damage to the railroad will be negligible for the 100-year flood, and the tracks appear to be completely out of the 10-year flood. Damage to the Boulder-Weld County Road and other eounty roads in the system will be minimal due to the shallow depth of flooding. Kenosha Road bridge will be completely inundated by the 10* and lOO-year floods and will probably be washed out in both events. Approximately 2,000 feet of the Lower Boulder-Weld County Ditch is in the loo-year floodplain. Public Utilities - Damages to public utilities are difficult to assess. Dollar ~alues to the gas, water, "ewer, power, and telephone wcr~ assigned based on interviews, historical (load losses, and en8ineerin~ jud~ment. the wastewater system for Erie and septic systems for Westview Escates will be subject to flood damages. It is noted that the sewage lagoons are above the 100-yearfloodelevation;nowever, tnedikeswillbes<lbjecttoer0810n. The sewage collection system ~ay suffer damage from sediment in the Sewer lines. and manholes will be inundated. A?ricultural - A study 01 aerial photographs (taken 4/21/79) lor Reach 4 was made to determine the numher 01 areas of cultivated land in the 10- and 100-year floodplains. be flooded by the 10.year flOOd. Approximately 120 acres of agricultural land will flood and 210 acreS will be flooded by the 100-year -64- A~ricultural land was further idcdtified as being used for growing alfalfa hay or Corn Or for pasture. Colorado A~ricultural Statistics, published for 1979, was used as a guide in estimating damages to these three types of agri- cultural land Uses. A summary of the annual losses are shown in the follow- ingrable: Acres Flooded Flood Damages Agricultural Land 0" la-Year 100-Year IO-Year IOO-Year , I Alfalfa '"' 50 90 $2,600 $ 4,800 I Corn " 50 3,300 9,500 Pasture 50 70 $50 2,100 TOTAL no 210 $6,900 $16,400 O. Indirect Damage Determinations Damages whiCh arc not directly related to a p.lrtic<llar property or individ<lal are referred to as indirect damages. The.e damages do occur and place economic hardship on II community. The following n~e the indirect damages that were con$idered: Debris Removal and Cle",,"p - ~c[ll{Jval of debris from public. residential, and commercial land is a major feature 01 the recovery c(fo~t following a (lood disastcr. This damage was computed based On estimates of the n<lmber of manhours ~e<tuired and heavy eq<lipment needed to complete the task. An analysis of major flood events was made to determine unit/cost and time sched<llcs. Loss of Sales - this indirect loss was based 0" 20 nctive businesses being closed due to a flood. These indirect dollar damages '~ere bas~d on loss of sales, including profit, rather than on damage to inventory, which was considered in the direct damage estimates. - 65 -