CFR›Title 7›Subtitle B›Chapter VI›Part 657 ContainsSubpart ACorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 657—PRIME AND UNIQUE FARMLANDS Subparts A Subpart A—Important Farmlands Inventory Sections 657.1–657.5 Authority7 U.S.C. 1010a; 16 U.S.C. 590a-590f; 42 U.S.C. 3271-3274.Source43 FR 4031, Jan. 31, 1978, unless otherwise noted. Previous 656 Part 656—Procedures for the Protection of Archeological and Historical Properties Encountered in NRCS-Assisted Programs Next 658 Part 658—Farmland Protection Policy Act