Hearing on H.R. 427, to Provide Further Protections for the Watershed of the Little Sandy River as Part of the Bull Run Watershed Management Unit, Oregon, and for Other Purposes; H.R. 434, to Direct the Secretary of Agriculture to Enter into a Cooperative Agreement to Provide for Retention, Maintenance and Operation, at Private Expense, of the 18 Concrete Dams and Weirs Located Within the Boundaries of the Emigrant Wilderness in the Stanislaus National Forest, California, and for Other Purposes; and H.R. 451, to Make Certain Adjustments to the Boundaries of the Mount Nebo Wilderness Area, and for Other Purposes.