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2 . . , the character of ,the model outputs in terms of weighted usable area. . The development of the methodology includes a description of how ener- gy technology impacts are specified and incorporated into the model. A concluding section sets out the overall assumptions and limitations of the methodology. More detailed assumptions or limitations and specific problems addressed are illustrated through a specific example applying the model. It is recognized that the model has utility for evaluating at the recon- ,naissance level (WRC Level A) the effects of water developments other than DOE technologies. LEVEL OF PLANNING ADDRESSED Demand is increasing for new technologies that may tap as yet unused or underutilized sources of energy such as the oil shales and western coal deposits. New energy technologies may involve raw material extrac- tion, transportation, and conversion facil ities. There are numerous options for siting such developments. A major factor in determining the most advantageous site will be the impact associated with the water supply. There may be environmental "costs" and penalties associated with devel- opment of these technologies. For example, a fisheries problem may be lessened egg or fry survival, or it may be a reduced standing crop of . juveniles and adults because of altered conditions. The questions are -- "What are the relative impacts of these disrup- tions?" and "How will consideration of these impacts influence decisions about where and when development of a technology should be acceler- ated?" The reconnaissance methodology presented in this document has three goals: (1) calling attention to the significant "costs" to fish and wildlife resources and recreation potentials: (2) providing a means of comparing relative impacts of application of a technology upon simulated representa- tive stream ecosystems in different areas of the nation and/or comparing technologies within the same area; and (3) constructing a framework for making more detailed assessments at specific locations on given streams after potential physical limiting factors have been identified. The methodology is designed for reconnaissance water planning only. Exercising the methodology will identify the initial impact (short-term changes) on different life stages of target fish species and potentials for recreation use. I t is designed to indicate probable changes in fish production and recreation conditions--"before" and "after"--the intro- duction of a new energy technology, .