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for different types of people, there may be different reactions to stream flow, even for a given activity; (3) the methodology needs a greater capability of delineating those stream flow variables which affect different types of activities and kinds of peole; (4) the criterion methodology now used is the "probability of use II function. However, true probabilities do not exist in the way the methodology is now constructed and it is not known what even is being predicted; and (5) the methodology does not include sufficeint concern for social welfare values. The strengths of the incremental methodology identified by the workshop on recreation are: (1) it uses quantitative standard measures which have general validity and applicability; (2) its approach is based on efficient description of stream conditions through sampling and simulation; (3) an analytical approach is used, which promises to allow efficient and rigorous investigations of the issues; (4) the methodology to be theoretically and conceptually rigorous has created an articulation of precise questions as well as demands for specific information and operational definition of terms; (5) it has generated a new set of questions for tributary disciplines including recreation scientists, fish biologist water quality experts, and stream hydrologists; and (6) it has generated a program of developmental education. However, the IFGIM has not as yet achieved its objective of providing a capability of (1) assessing the recreation potential of a stream; (2) specifying instream flow requirements for recreation; and (3) assessing the impact on recreation potential of instream flow. To achieve the above objective, the workshop lists four general components which must be more fully understood: (1) the relationship between recreation potential and instream flow--the criterion component, (2) the description and prediction of the instream flow characteristics of a given ~ .. -- 22