VOLUME 2 OF THIS DESALINATION MANUAL CONCERNS THE ECONOMIC FEASIBILITY OF DESALINATION PROJECTS. IT PROVIDES GUIDELINES FOR THE INITIATION OF A PROGRAM FOR DEFINING AND SOLVING THE WATER SHORTAGE PROBLEMS OF A PARTICULAR REGION OR NATION. THIS VOLUME TELLS HOW TO DRAW UP A WATER DEVELOPMENT PLAN, SELECT THE MOST PROMISING SOLUTION, AND DO A FEASIBILITY STUDY OF THE SOLUTION WHICH IS SELECTED. THE ORDERLY SOLUTION OF A NATIONAL WATER SHORTAGE PROBLEM DEMANDS THE PREPARATION OF A PLAN TO DETERMINE IF DESALINATION IS THE BEST METHOD FOR INCREASING WATER SUPPLY. GUIDELINES ALSO ARE PRESENTED FOR GATHERING AND ANALYZING DATA ON ENERGY AND WATER RESOURCES AND REQUIREMENTS.