CFR › Title 33 › Part 238 › §238.333 CFR §238.3Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Executive Order 11988—Floodplain Management, dated 24 May 1977.(b)U.S. Water Resources Council, Floodplain Management Guidelines, (43 FR 6030), to February 1978.(c)ER 1105-2-811.(d)ER 1140-2-302.(e)ER 1140-2-303.(f)EP 1165-2-2.