Document: Appendices to Pacific Southwest Water Plan Review Draft "Bureau of Outdoor Recreation", August 1963, page 9present and future generations, in the Phoenix-Tucson urban complex. 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 a project purpose. These aspects of the project reserv...