2. Estimates being developed at this time on recreation benefits and on cost allocations to recreation are, of necessity, tentative. The growing importance given to recreation as a project purpose of federally constructed reservoirs makes it necessary to make thorough appraisals of the extent to which reservoirs can help to meet the need for water-oriented recreation, monetary measurement of the benefits derived from meeting such needs, and the extent of justifiable Federal investment in recreation as project purpose. These aspects of the project reservoirs, and the relationship between Federal and other responsibilities for paying the costs of recreation, require thorough review in the light of Senate Document 97 of the 87th Congress and t...