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<br />electric power substations, gas regulator stations, and storage <br /> <br />facilities. <br /> <br />Transportation Facilities, Highways, streets, and bridges are <br /> <br />particularly vulnerable to washing out or suffering wave damage, Bridges <br /> <br />are vulnerable to damage by debris, particularly when the debris is being <br /> <br />carried by very heavy current, The locations and elevations of especially <br /> <br />vulnerable facilities should be determined after interviews with local <br /> <br />public works and state highway managers. Railway beds and track are <br /> <br />subject to being washed out when the track is overtopped, The elevation, <br /> <br />length and number of tracks, particularly in low lying areas, need to be <br /> <br />identified, An effort should also be made to inventory rail yard <br /> <br />facilities and cars that might be kept in low lying areas. <br /> <br />STEP SIX: SELECT DEl'TIl-DAKAGK RKlATIONSHIPS <br /> <br />After the inventory and appraisal of flood-prone property, the <br /> <br />computation or selection of depth,damage relationships is the most <br /> <br />important job the economist has in this area, This section will deal with <br /> <br />the process of selection of appropriate depth-damage functions to meet the <br /> <br />requirements of a particular situation. This section also includes a <br /> <br /> <br />discussion of when it is appropriate to use generalized depth-damage <br /> <br /> <br />relationships and when it is necessary to compute site specific functions, <br /> <br /> <br />There will also be emphasis on the process of verifying and adapting <br /> <br />depth-damage functions to serve as reliable predictors of specific flood <br />problems, <br /> <br />V-34 <br />