The Bureau of Reclamation, meanwhile, had recognized a more serious problem. Construction of the Storage Project, and allowing the Upper Basin to develop its water supplies, would tip the whole Colorado River system toward a structural water deficit, due to the fact that the Colorado River's average flow is less than what was apportioned in the 1922 Compact. The USBR predicted that by 2030 the annual water supply for the Lower Basin would fall by twenty-five percent, to . To make up for this deficit, the USBR incorporated these proposals with the "Pacific Southwest Water Plan" on January 21, 1964, in which power sales from Glen, Marble and Bridge (often called "cash register dams") would be used to fund a diversion of water from the wetter Pacific Northwest to the Colorado Basin. In addition to the proposed diversion of the Trinity River in Northern California, Marc Reisner wrote in "Cadillac Desert" that "in the Pacific Northwest there was a lot of suspicion that the Pacific Southwest Water Plan was merely a smokescreen for a much larger plan, long a gleam in the Colorado Basin's eye, to tap the Columbia River."