| http://www.w3.org/ns/prov#value | - aintenance of harbor channels provided by a State, municipality, or other public agency that serve essential navigation needs of general commerce, where authorized by law; and for surveys and charting of northern and northwestern lakes and connecting waters, clearing and straightening channels, and removal of obstructions to navigation, $1,932,575,000, to remain available until expended, of which
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