The National Environmental Policy Act of 1969, referred to in subsec. (b)(2)(B), is Pub. L. 91–190, Jan. 1, 1970, 83 Stat. 852, which is classified generally to chapter 55 (§ 4321 et seq.) of Title 42, The Public Health and Welfare. For complete classification of this Act to the Code, see Short Title note set out under section 4321 of Title 42 and Tables.

2020—Subsec. (a)(1). Pub. L. 116–260, § 161(a)(1)(A), inserted “, or, upon the written approval of the Secretary that the modifications are consistent with the authorized purposes of the project, undertake a feasibility study on modifications to a water resources development project constructed by the Corps of Engineers,” after “water resources development project”.

Subsec. (a)(2). Pub. L. 116–260, § 161(a)(1)(B), substituted “for the formulation of feasibility studies of water resources development projects undertaken by non-Federal interests to—” for “for feasibility studies of water resources development projects to provide sufficient information for the formulation of the studies.” and added subpars. (A) and (B).

Subsec. (b). Pub. L. 116–260, § 161(a)(2), designated existing provisions as par. (1), inserted heading, and added pars. (2) to (5).

Subsec. (c)(1). Pub. L. 116–260, § 161(a)(3), in introductory provisions, substituted “after the completion of review of a feasibility study under subsection (b)” for “after the date of receipt of a feasibility study of a project under subsection (a)(1)” and “an assessment” for “a report”.

2018—Subsec. (a)(1). Pub. L. 115–270, § 1152(1), inserted “federally authorized” before “feasibility study”.

Subsec. (c). Pub. L. 115–270, § 1152(2), amended subsec. (c) generally. Prior to amendment, text read as follows: “Not later than 180 days after the date of receipt of a feasibility study of a project under subsection (a)(1), the Secretary shall submit to the Committee on Environment and Public Works of the Senate and the Committee on Transportation and Infrastructure of the House of Representatives a report that describes—

“(1) the results of the Secretary’s review of the study under subsection (b), including a determination of whether the project is feasible;

“(2) any recommendations the Secretary may have concerning the plan or design of the project; and

“(3) any conditions the Secretary may require for construction of the project.”

Subsec. (e). Pub. L. 115–270, § 1152(3), amended subsec. (e) generally. Prior to amendment, text read as follows “At the request of a non-Federal interest, the Secretary may provide to the non-Federal interest technical assistance relating to any aspect of a feasibility study if the non-Federal interest contracts with the Secretary to pay all costs of providing such technical assistance.”.

2016—Subsec. (e). Pub. L. 114–322 added subsec. (e).

2014—Pub. L. 113–121 amended section generally. Prior to amendment, section related to studies of projects by non-Federal interests.

For short title of title II of Pub. L. 99–662, enacting this subchapter, as the Harbor Development and Navigation Improvement Act of 1986, see section 215 of Pub. L. 99–662, set out as a note under section 2201 of this title.

Pub. L. 116–260, div. AA, title I, § 161(b), Dec. 27, 2020, 134 Stat. 2667, provided that: “Not later than 90 days after the date of enactment of this Act [Dec. 27, 2020], the Secretary [of the Army] shall issue revised guidelines under section 203 of the Water Resources Development Act of 1986 (33 U.S.C. 2231) to implement the amendments made by this section [amending this section].”

Pub. L. 116–260, div. AA, title I, § 161(c), Dec. 27, 2020, 134 Stat. 2667, provided that: