E.g. , 38.60 Acres in Henry , 625 F.2d at 199-200; see also Avoca Island , 616 F.2d at 768 (improper to value as if United States would deposit dredging spoil on remainder land); United States v. 3,317.39 Acres of Land in Jefferson Cty. , 443 F.2d 104 (8th Cir. 1971) (error to consider damage for possible flooding of remainder property); United States v. Brondum , 272 F.2d 642 (5th Cir. 1959) (error to value taking of easement to cut trees and remove obstructions as if it also included avigation rights to fly aircraft over area).