Stockton and Mormon Channels, San Joaquin River, Cal., including the Diversion Canal. Letter from the Secretary of War, transmitting, with a letter from the Chief of Engineers, report on examination of Stockton and Mormon Channels, Cal., including the Diversion Canal, with a view to determining what, if anything, may or should be done by the United States, either alone or in conjunction with the City of Stockton and the State of California, or with either of them, in order to increase the capacity of said diversion canal from its upper end, in Mormon Channel, to the mouth of Calaveras River, in the San Joaquin River, so that said canal shall carry the entire flood flow of Mormon Channel and thus prevent the deposit of material in the navigable portions of Stockton and Mormon Channels.