operation and maintenance, general

operation and maintenance, general For expenses necessary for the preservation, operation, maintenance, and care of existing river and harbor, flood control, and related works, including such sums as may be necessary for the maintenance of harbor channels provided by a State, municipality, or other public agency, outside of harbor lines, and serving essential needs of general commerce and navigation; financing the United States share of the cost of operation and maintenance of remedial works in the Niagara River; activities of the California Debris Commission; administration of laws pertaining to preservation of navigable waters; surveys and charting of northern and northwestern lakes and connecting waters; clearing and straightening channels; removal of obstructions to navigation; rescue work, and repair, or restoration of flood control projects threatened or destroyed by flood; and not to exceed $1,915,000 for transfer to the Secretary of the Interior for conservation of fish and wildlife as authorized by law; $126,420,000, to remain available until expended.