The present recommendations, though much wider in overall scope than our earlier ones, represent only a first step in planning for the Basin, for reasons presented in full in this report. They are attuned to present economic and technological possibilities, as they must be. We believe that if they get full and calm appraisal they will prove to be acceptable politically, for all of them that call for major projects represent solutions for acute and imminent problems for which other satisfactory solutions do not presently exist, and to the greatest possible degree they have been made flexible to accommodate possible future change in aims or techniques. In most cases, the reasons for specific recommendations have already been given in the body of this report. However, the primary public interest that focuses on the matter of major storage reservoirs may make it worthwhile at this point to review and enlarge upon the facts. Some reservoirs are going to have to be built if the Basin is to cope satisfactorily with water supply, water quality, and recreational demands. At the time of the _Interim Report_, we recognized that the three reservoirs in the Paw Paw Bends area, together with Bloomington, were very possibly not going to be enough to meet the need, but we made a recommendation for their authorization because it was clear that they would take the edge off the immediately looming water problem at Washington, would mesh well with any additional future storage in the Basin, and would have no major disruptive scenic effects but instead would provide a great deal of high-quality flat-water recreation in an area where there was significant demand for it. These considerations still apply. However, the more complete picture of Basin water problems that has emerged in our studies since the _Interim Report_ shows that at least two more reservoirs are very possibly going to be needed, and that the most useful scheduling of initial projects will combine an answer for upstream problems with the satisfaction of near-future needs at metropolitan Washington. Besides the stretch of concentrated industry and population along the North Branch, where Bloomington Reservoir is going to be needed as soon as possible, three upper-Basin areas with major storage sites available near at hand are faced with large water shortages in the near or middle future, and have streams that would benefit greatly from flow augmentation. In the order of the critical importance of their problems, they are Frederick, Maryland, on the Monocacy; Chambersburg, Pennsylvania, on the Conococheague Creek; and the Staunton-Waynesboro area on the upper tributaries of the Shenandoah's South Fork, in Virginia.