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26. EVALUATION OF URBAN FLOOD DAMAGE a. Urban Damage. Appraisal was made of each residence on the basis of the estimated value and type of propertyandoontents, and the observed depth of flooding. These appraisals are-aummarized in table 7. b. Businesa and Industrial Damalte. Owners or managers of cOllllDercial establishments were the main source of information as a basis for business and industrial damage estimates. Information per- taining to inventories, gross revenue, p~rolls, and plant valuations was obtained for detailed analysis of flood damages. Possible losses due to business shutdown, loss of wages, rehabilitation, and other abnormal operations were noted. c. Other Commercial Damage. Municipal, utility, and transporta- tion losses were obtained through the assistance provided by responsible local officials. Costs of flood fighting, evacuation and welfare ser- vices were obtained from the responsible agencies and applied to relative estimates of rural and urban damages. Estimates for these costs are summarized for each urban center where the expenditure was made. Detailed estimates are shown in table 7. 27. URBAN DAMAGE a. Great Falls. Flooding in the western part of Great Falls resulted from overflow of the Sun River and backwater effects on the Missouri River caused by high inflows from the Sun River. Combined flooding along the two streams caused a total estimated darnageof approximately $4,410,000. Depths of 10 to 12 feet were noted on several homes located in low lying areas. Residential damage vas estimated at more than $3,160,000 and commercial damage was- estimated at nearly $200,000. Damage to streets -and utilities exceeded $1,000,000. Varying degrees of damage were sustained by 681 homes and 24 business establishments. Approximately 3,000 persons were evacuated from the flooded- arear -1le-SCUe- (#perat:l.on&. - -:!'1oed -:!'ighting,and- veH'=e- as sist1lllce cost about $47,000. b. Manchester. The small community of Manchester, located about 3 miles west of-Great Falls , was almost completely inundated by the Sun_ River to depths up to 7 feet. Twenty homes sustained estimated damages of nearly $47,000. No business estabiisbments are looated in the cOlllllluni ty . c. Vaughn. Vaughn is located on high ground and sustained no flood damage in the town proper. However, a-new residential area located on the Sun River flood plain south of Vaughn was flooded to an average depth of about 8 feet. Dsmage to 38 homes exceeded $200,000 and street and utility damage added another $40,000. The entire popula- tion of about 150 persons was evacuated from the suburban area. 13