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28 waters. The other provisions the Service emphasizes are statements of purpose, which by their nature “cannot override [a statute’s] operative language.” Id., at 220. And anyway, our construction leaves the Park Service with multiple tools to “protect” rivers in Alaskan national parks, as those statements anticipate. §3101(b); §410hh–1(1). The Park Service may at a minimum regulate the public lands flanking rivers. It may, additionally, enter into “cooperative agreements” with the State (which holds the rivers’ submerged lands) to preserve the rivers themselves. §3181(j). It may similarly propose that state or other federal agencies with appropriate jurisdiction undertake needed regulatory action on those rivers. See §3191(b)(7); see also Kobuk Valley: Land Protection Plan, at 118, 121 (recommending that the Alaska Department of Natural Resources classify navigable parts of the Kobuk River for preservation efforts). And if all else fails, the Park Service may invoke Section 103(c)’s third sentence to buy from Alaska the submerged lands of navigable waters—and then administer them as public lands. See §§3103(c), 3192; see also Kobuk Valley: Land Protection Plan, at 133 (proposing that if Alaska does not adequately protect the Kobuk River, the Park Service should “seek to acquire title to th[o]se state lands through exchange”).

Those authorities, though falling short of the Service’s usual power to administer navigable waters in system units, accord with ANILCA’s “repeated[] recogni[tion] that Alaska is different.” Sturgeon I., 577 U. S., at ___ (slip op., at 13). ANILCA’s broadly drawn parks include stretches of some of the State’s most important rivers, such as the Yukon and Kuskokwim. See Brief for State of Alaska as Amicus Curiae 12. And rivers function as the roads of Alaska, to an extent unknown anyplace else in the country. Over three-quarters of Alaska’s 300 communities live in regions unconnected to the State’s road system. See id., at 11. Residents of those areas include many of Alaska’s