United States v. 320 Acres , 605 F.2d 762, 796, 782 (5th Cir. 1979); see also United States v. 49.01 Acres of Land in Osage Cty. , 669 F.2d 1364, 1369 (10th Cir. 1982) (refusing to apply scope of the project rule where landowners could not have reasonably believed their submerged property was no longer within the scope of a government reservoir project).