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$ i , ~ , ~ 1:. :{ ~, ~ ~. ~, i: " ~ INTEGRATED FLOOD RISK MANAGEMENT Kenneth R. DePodesta, p.Enq. Peter Nimmrichter, M.Enq., P.E:nq. Abstract * In recent years there has been a paradigm shift from dealing with development issues from a piece meal approach t.O a holistic one or ecosystem approach. Development pressures are increasingly focused in areas on environmental, political and economic significance. To facilitate effective and meaningful evalua'tion of potential development in these areas data management :lnust be efficient, consistent and complete. The varied sources of information forming the database for investigations may consist of; f. ~ ? ~,. r !'1'. t t , ~ p'aper maps/drawings * flood erosion data * public comment * * digital base mapping at various scales * previous reports/documents/letters * 35 mm type photographs/air photography * hydrologic/hydrogeologic/hydraulic data * development plans presen"t/future land uses * * environmental data parc,el/assessment data * This supply of, sometimes seemingly disparate:, information will form the basis from which evaluations will proceed and this information with additional data gathered throughout the study process will ultimately provide solution(s) to the known problem (s) . Traditionally, study team members .Tould be required to review the base'information and utilize the data in their analyses. The present difficulty with this approach is the voluminous quantities of data which now confront the study team, which may be made up of planner, hydrogeologists, 'terrestrial/aquatic professionals, engineers, governmental agencies, and municipal staff. All of the data must be assimilated and assessments of the possible inter-relationships of the known information must be made. There exists the potential for use of incomplete data or different base data by various team groups leading to uncommon understandings of the problems. , ! ~ ~ " f' ~ a