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<br /> <br />1 <br /> <br />1 <br />1 <br />1 <br /> <br /> <br /> <br />1 <br /> <br />1 <br />1 <br /> <br />1 <br /> <br /> <br />Indeed, I-O analysis continues to enjoy widespread use by such organizations as the U.S. Forest <br />using I-O models. <br />Service, and many projects in developing countries have been evaluated by the World Bank <br />Several steps were involved in constructing the 10-county regional model. The IMPLAN <br />aggregation software and database were used to develop a baseline model for 1990 and to <br />provide the means for conducting aggregation analysis.' There are several advantages to the use <br />of IMPLAN for this purpose. In particular, the IMPLAN data bases permit construction of <br />regional and state inter-industry matrices. IMPLAN also provides a mechanism to aggregate <br />many sectors in its database to manageable numbers. <br />There are 528 economic sectors in the IMPLAN database. In an area such as the 10-county <br />region being studied, many of these sectors will be very small or nonexistent. It would be <br />extremely difficult to work with a model this large, and many of the impacts would be lost in the <br />details. For this reason it is usual to aggregate the total sectors into a smaller set of economic <br />sectors that capture the entire output of the region as well as represent the main economic <br />structure. In the Brookshire et al. study (1993) the analysis was conducted with a 20-sector <br />model. Since the economy of the 10-county region is less diverse than that of the seven states <br />comprising the Colorado River Basin, 16 sectors are used in this study.' These sectors are listed <br />in Table 3-A-L <br />The sectors that are projected to experience direct impacts due to actions taken on behalf of the <br />endangered fishes are indicated in the table. Sectors requiring adjustment in the with-fish (WF) <br />s The IMPLAN Input-Output Modeling software was developed in a joint effort of the U.S. Forest Service and <br />the Department of Agricultural Economics, University of Minnesota. <br />6 As in the previous study, the sixteen sectors incorporate all of the regional economic activity originally <br />included in the 528 disaggregated sectors. <br />is <br />1